User Manual
Contents
1. Accessing client information after a session Deleting data Continuing the test 7 17 18 19 13 19 1g 20 20 20 20 21 21 21 21 21 22 22 22 22 22 23 23 23 24 24 24 Content 12 13 14 14 1 14 2 15 16 16 1 T62 16 3 16 4 16 4 1 16 5 16 5 1 16 52 16 5 3 16 5 4 16 6 16 7 16 8 169 16 10 Client session Add tester Session date LISN S test results Diagnostic Diagnostic screen graphic Results explanations Reports Background information Environment required for administering LISN S Administering LiSN S The Listening In Spatialized Noise Sentences Test Sentences Correct sentences words and correct responses Scoring The LISN S test conditions Condition 1 Different Voices 90 Condition 2 Same Voice 90 Condition 3 Different Voices 0 Condition 4 Same Voice 0 LISN S Advantage Measures Normative data Test Retest reliability and critical differences scores Practicing the LISN S test Instructions to child 25 25 25 26 27 21 28 29 31 31 31 31 33 3d 3d 33 34 34 30 30 36 J36 38 38 16 11 16 12 16 13 17 18 19 LISN S test summary Presentation Order Presentation Levels Child s task Warning tone SNR SNR adjustment Level adjustment in dB Number of sentences presented Final SRT Cut off scores List of references Internet software updates Service and warranty List of Ph2. Delete button erases the current record 25 The results can also be accessed in the Reports section in the left hand menu After deleting the record you must restart the diagnostic procedure in all four conditions 13 LiSN S test results Results After the completion of the test in each of all four conditions Different Voices 14 Diagnostic 90 Same Voice 90 Different Voices 0 Same Voice 0 the client s results are recorded 14 1 Diagnostic screen graphic The diagnostic screen shows the history of the target level as the range of correct The client s results are automatically recorded in the Client Session responses from greater than 50 percent correct to less than 50 percent correct is repeatedly traversed 26 27 The red line indicates the background voice level of the distracters The green line indicates the level of the target sentences as it changes adaptively over the course of the test condition The blue line indicates the patient s average speech reception threshold SRT 14 2 Result explanations If the test has not been completed in all four conditions the results are invalid and the tester is notified When the test is complete recommendations are given in the text field below the table Example recommendations include The client was outside normal limits on the high cue SRT spatial advantage and total advantage measures of the LISN S These results are
3. in the software 17 Internet software updates Once you have purchased LISN S you are entitled to download further software updates directly from the internet The software checks to see whether internet updates are available on start up This feature can be deactivated in the menu Help Internet Upgrade Service just uncheck the Check the version on start option There are several reasons why communication with the update server might not be established These include There is no open internet connection Open or activate your internet connection Your proxy server is not correctly configured In the internet update window click on the Internet Options menu and enter the proxy name and port Optionally a user ID and password can be entered There is a firewall blocking access to the internet add the LISN S application to the firewall s list of exceptions If you don t have internet access to update the software please inform your LiSN S sales contact accordingly 41 18 Service and warranty Phonak provides a manufacturer s limited warranty for LISN S Please ask your sales contact for full details of this warranty Problems with LISN S arising from improper handling care and adjustments or improper use of material or unauthorized material are not covered by the warranty Sennheiser headphones HD 215 You will receive an original Sennheiser Document of Warranty which needs to be validated by you
4. as announcements new versions and updates recent publications etc Guidelines and background information provides insights into the research and development of LISN S i 4 E E ee 4 t F 1 a m Gi ri isiietpapir ieirtmipiime pesay ENAA TEREPEN A ENEN TIN EREN ee t Test language Highlight the test language you require and confirm by pressing OK You can choose or change the test language only at the beginning of a LISN S session 14 15 Professional articles provides a list of LISN S related publications Licence Agreement provided in Adobe PDF format Movie LISN S in detail the concept LISN S Internet provides a direct link to www LiSN S com 8 4 Help menu oe ee e neh qT a oe 2 Help topics B Help for curent screen lg User manual What s new the latest helpful LISN S information Help topics find the answers you need by topic User Manual an electronic version of this User Manual in Adobe PDF format Internet upgrade service view internet update information 16 No new update required LISN S application provides general info about the LISN S test program 8 5 Icons Print Back up of user data Edit the list of professionals Search for a client 9 How to administer the LISN S test Select the Test language This needs to be done when first using LISN S and whenever a chan
5. be viewed via the All tab Look for Last clients All 21 Search client when clicked this button displays client search results in alphabetical order Clear search clears the client search entry in the client database A search can also be performed by typing a client s First or Last name into the blue marked textbox 11 Client list Entering client data To add a new client press the New button on the right side of the frame Enter the client s information in the text fields provided and press the Add button If required you can click Cancel to restart Lask tar Le chore an Mandatory fields The text fields Last Name First Name and Date of Birth are marked with an asterisk and therefore mandatory In order to continue with LISN S you must fill in these mandatory fields 22 Chieri liat Date of birth If a client is aged under 6 years O months or above 11 years 11 months a pop up window opens that reads The diagnostic tests can be run however the normative data is not available for ages under 6 years O month and over 11 years 11 months i The diagnostic tests can be run however the normative data is not available for ages under 6 years and beyond 11 years 11 months To continue click OK The information entered will be added to the client list below A Through upgrades of LiSN S new norms for other ages may become available Renaming a text fiel
6. recorded i e the sentence score drops below 50 percent of words correct Practice sentence scores do not contribute towards a child s final SRT scores Testing in a particular condition automatically ceases when the listener has either a completed the entire 30 sentences in any one condition or b completed the practice sentences plus a minimum of a further 17 scored sentences and his or her standard error calculated over the scored sentences is less than 1 dB While running the test if you consider a child is losing concentration gently prompt the child to listen in front in the case of a condition where the distracters are spatially separated from the target or listen hard for the beep if the stimuli are coming from the same direction If required stop testing reset i e don t save the data give the child a short break and try again 16 10 Instructions to child The following explanation is recommended You are going to hear some sentences over these headphones The sentences are said by a lady called Miss Smith Even though you are wearing headphones Miss Smith will sound as if she is standing just in front of you There will be a beep before each sentence so you will Know when it is about to start Your job is to repeat back the sentences that Miss Smith says pretend to be Miss Smith and want you to repeat the sentence you hear The dog had a bone Child repeats The d
7. the Licence Agreement The system requirements and LiSN S test specifications need to be strictly followed Before starting LISN S read the Licence Agreement to make sure you are permitted to run the LISN S test software LiSN S software is protected and can only be administered with the LiSN S specific Phonak soundcard installed Any unauthorized installation of software and or soundcard and or calibration of the USB soundcard and or headphones which could damage your computer system or cause you hearing problems are prohibited Phonak declines any responsability for any consequences 3 The LiSN S package LISN S is a combined hardware and software package It comprises LISN S PC software program High quality headphones Phonak soundcard Listening in Spatialized Noise Sentences Test LiSN S Software The package also includes the Document of warranty which should be validated by your LISN S sales contact LISN S features automatic internet updates The user is notified when new updates are available and these can be then downloaded free of charge These upgrades comprise new features such as new language support new norms new reports or extended database functionalities A See chapter 17 Internet software updates 4 Important information 4 1 LiSN S headphones LISN S uses Sennheiser HD 215 headphones For further information about these headphones please visit www sennheiser com No othe
8. 16 6 LiSN S Advantage Measures Moving distracting voices from the front to the sides allows a child to make use of spatial cues How much an individual child benefits from this movement is easily calculated by measuring the difference in scores between conditions 2 and 4 This spatial advantage is calculated automatically by LISN S and is a highly sensitive indicator of auditory processing disorder Children diagnosed with APD score very poorly in the spatial advantage measure 30 To assess how well a child can differentiate between different speaker voices and so understand speech in noise LISN S also calculates the difference between a child s scores for conditions 3 and 4 The resulting figure is known as the child s talker advantage The difference between a child s scores in conditions 1 and 4 is referred to as his or her total advantage Like the high cue SRT total advantage is a measure of how well a child uses the cues in the environment to filter the noise coming from different speakers and different directions As mentioned previously by measuring performance as a difference between the scores from two LISN S conditions the influence of higher order language learning and communication skills on test performance is minimized This unique LISN S approach to measurement allows clearer evaluation of a child s ability to use spatial and voice cues LISN S automatically calculates whether a child has displayed a diso
9. ER LICENCE AGREEMENT IMPORTANT The LISN S program will now start 11 6 3 Calibration information The output of the Phonak USB soundcard and the headphones is automatically set to the correct dB SPL level by the LISN S software 7 LiSN S configuration The LISN S software is configured into 3 main modules Client Diagnostic and Reports Client module this contains information about clients The list of clients is protected Client session results are included in this module Diagnostic This module is used to assess the four LISN S conditions Different Voices 90 Same Voice 90 Different Voices 0 Same Voice 0 Section results and explana tions are included Reports These are generated automatically Reports can be viewed during a test or at the end of the test Reports can be easily printed and e mailed 8 Toolbar menus and icons 12 8 1 File menu Page setup is possible Exit LISN S The Configuration menu is activated as soon as you open a client in the List of Clients 8 2 Configuration menu Edit button Click Edit to configure your lists of schools teachers and testers Phonak LiSh S New session 1 hak tar language selection when cresting a new seaman Information regarding the headphones and Phonak soundcard is also listed under the Configuration menu 8 3 Extra menu New provides latest LISN S information such
10. LISN S Listening in Spatialized Noise Sentences Test LISN S Software User Manual Developed by National Acoustic Laboratories Distributed by Phonak Made in Switzerland qT Scop hed ae a 5 mm Na tioni Acoustic boratories PHONAK A Division of Australian Hearing at X LISN www LiSN S com www phonak com 058 3006 02 V1 01 2009 5 visu l Printed in Switzerland Phonak AG all rights reserved Content 4 1 4 2 6 1 BZ 6 3 8 1 8 2 8 3 8 4 6 5 Welcome Legal hint The LiSN S package Important information LISN S headphones Phonak soundcard System requirements Installation Installing the LISN S equipment Software installation Calibration information LiSN S configuration Toolbar menus and icons File menu Configuration menu Extra menu Help menu Icons 13 13 14 15 16 17 10 11 How to administer the LiSN S test Select the Test language Add client and tester information Test condition Target sentence Entering the child s score Next target sentence Stopping the test Selecting the Stop button when the score O is marked Final SRT Completion of the condition Completion of the LISN S test Test results Client data Data protection Look fora client Search client Clear search Client list Entering client data Mandatory fields Date of birth Renaming a text field Notes field
11. cation of the sounds or the pitch of the speakers voices help this process of segregating the total stream of sound LISN S is presented over headphones using a PC A three dimensional auditory environment is created by pre synthesizing speech stimuli with head related transfer functions HRTFs This offers an alternative to free field testing which is limited by factors such as listener head movement which can affect the sound at the eardrum by several dB as well as replication of loudspeaker and listener placement between clinics and the effects of reverberation between clinics Output levels are directly controlled by the software using an external Phonak soundcard A simple repetition response protocol is utilized to determine a listener s speech reception threshold SRT for sentences presented in competing speech looped children s stories The target sentences are perceived as coming from directly in front of the listener 0 azimuth whereas the maskers relative to the targets vary according to their perceived spatial location 0 vs and 90 azimuth the vocal identity of the speaker s of the stories same as or different to the speaker of the target sentences or both 31 The competing speech is presented at a constant level of 55 dB SPL The target sentences are initially presented at a level of 62 dB SPL The signal to noise ratio SNR is adjusted adaptively in each condition by varying the target level to determ
12. ch is also spatially separated from the target sentences appearing to come from the left and the right This gives the child several aural cues to help him or her to filter out the background noise and identify the target speech 33 The result of this condition is called the child s high cue speech reception threshold or high cue SRT Different voices 90 SEN i Speech signal High Cue SRI n f 16 5 2 Condition 2 Same Voice 90 In condition two the competing speech is composed of the same voice as the target speech and again comes from the left and right Speech signal Noise from Sa VO 16 5 3 Condition 3 Different Voices 0 With condition three the competing speech is composed of different voices than the target Speech and comes from the front the same direction as the target speech 34 Different voices 0 Sandton Speech signal 3 Ne se Trom g fferer t VOICES 16 5 4 Condition 4 Same Voice 0 Low cue SRT In condition four the competing speech uses the same voice as the target speech and comes from in front of the child the same direction as the target speech This fourth condition is the most difficult of the four as there are no spatial cues available and the target and competing speech is very similar The result of this test is referred to as the child s low cue speech reception threshold or low cue SRT Same voice 0 Condition Speech signal Low Cue SRT A Noise from same vo
13. ct the Sennheiser HD215 headphones to the green headphone input socket of the Phonak USB soundcard The software will not run unless the Phonak soundcard is connected to the computer In case of soundcard recognition problem make sure your Phonak soundcard is set as default soundcard Go to Start gt Configuration panel gt Sound 6 2 Software installation Insert the LISN S CD ROM in your PC s CD ROM drive The CD ROM will autoplay In case of no autoplay go to My Computer click the CD DVD drive icon then double click on the LISN S exe installation file Enter your User Name and Company Name Phonak LISN S InstallShield Wizard Customer information Ploase enter pour information Pleste enda pour name and the name of the company for which pou work User Nams Click Next and follow the on screen prompts to complete the installation Copying of the LISN S files and software registration will only begin after you have read and accepted the LISN S licence agreement Welcome to the InstallShield Wizard for Phonak LISN S The InetaitShield Wizard wal instal Phonak LISN 5 on you computes To continue cick Next 10 Re start the LISN S software via the desktop icon provided or the Start Programs menu Make sure your soundcard is inserted Click Licence and scroll down to read the licence agreement f you agree press OK Listening in Spatialized Nolse Sentences test LISN 3 END US
14. d The field Other can be renamed Notes field Further information regarding the client such astherapy or diagnosis notes can be added in the Notes box 23 ay p es me ae ssieeue Accessing client information after a session has been completed The test results of previous clients can be easily accessed The client list can be either scrolled or searched using the binocular icons at the top of each client data column Click on the desired client name and continue adding or changing information as required Deleting data Old client data can be deleted by pressing the Delete button on the right hand side of the screen Continuing the test When finished with the Client List continue by pressing the Next arrow at the bottom left of the screen In order to create a full client record we recommend that you fill in all the text fields in the Client List 24 12 Client session Add tester Press the New button on the right hand side of the screen opposite the text fields Write the tester s name into the Tester field and validate by pressing the OK button on the right hand side of the screen The tester s name and date will be entered into the list below Teste Chambe V iw Dae 12012005 oao iii Session date The session date is automatically entered into the Date text field You must validate the text by pressing OK 12012009 Langues The
15. d correct if it is repeated exactly as it appears on the playback screen If the child includes an extra word there is no penalty If the child substitutes a word leaves a word or words out or inserts morphemes such as plural or past tense markers the number of correct words is adjusted For example for the sentence The dog ate the bone a The dog ate the bone 5 words correct b The big dog ate the bone 5 words correct c The dog ate 3 words correct d The dog at the phone 4 words correct e A dog ate the bone 4 words correct f The dog ate the bones 4 words correct 16 4 1 Scoring f the child correctly identifies more than 50 percent of words in the sentence the amplitude of the next sentence is reduced f the child correctly identifies less than 50 percent of the words the amplitude of the next sentence Is increased The signal to noise ratio SNR is not adjusted if a response of exactly 50 percent correct is recorded 16 5 The LiSN S test conditions LISN S assesses a child s auditory processing in four different conditions In all four conditions the target speech comes directly from the front The listener s score is automatically calculated by the software and represents his or her speech reception threshold in dB 16 5 1 Condition 1 Different Voices 90 high cue SRT In the first condition the competing speech is composed of different voices to that of the target speaker The competing spee
16. ge of test language is required Sl Phonak LiSN S Nen sessen a A hae tot language selechon when Cresnng amp few seamen Add client and tester information Type the client s name and details click Add and then Next To add the tester select New type in the tester s name then select OK followed by Next 18 mbes rarer d Exvee rn rensa Munda OM Test condition Highlight the first LISN S condition Then press the Start button on the very right hand side The competing speech will now commence Target sentence Press the blue colored Next sentence button to present the first test sentence When the target sentence is playing the icon is shown This icon disappears when the target sentence Is finished Entering the child s score Enter the number of words the child repeated correctly using the number button panel on the right of the screen If the child repeated all the words correctly click the large All button Next target sentence After you have entered the child s score you can move to the next sentence by pressing the Next button on the right Stopping the test If for any reason you need to stop the test just press the Stop button on the right hand side Background voice Phaseleve C Step Selecting the Stop button when the score O is marked If the score of O appears in the Actual Correct box and the Stop button is selected a pop up w
17. he SRT when the distracters are presented at 0 and the SRT when they are spatially separated at 90 these Skills will have minimal effect on the difference between the SRTs in these two conditions Thus the differences that inevitably exist between individuals in such functions can be accounted for allowing for clearer evaluation of their abilities to use spatial and voice cues to aid speech understanding LISN S SRT amp Advantage Measures Same Speaker Different Speaker Rely on SNR Low Cue SRT u Same Voice 0 Talker Advantage Different Voices 0 O Same D Location Use tonal and spatial cues Ss a Same Voice 90 Different Voices 90 Different High Cue SRT Location 32 LISN S studies have shown that there is a trend of decreasing SRT and increasing advantage as age increases No significant differences were found on any performance measure as a consequence of data collection site or gender Inter and intra participant variation is minimal Test retest differences are not significant on any measure Full details of the LISN S test s development sentence equivalence studies normative data studies and test retest reliability studies can be found in the Professional Articles section in the Extra menu 16 4 Sentences Correct sentences words and correct responses The child s task is to repeat as many words as possible heard in each target sentence A word is considere
18. he table a green field is considered a Pass and a red field a Fail Client reports can be previewed printed and e mailed from this menu Clicking Report preview opens an Adobe PDF file which provides the following information General LISN S background Client test results Suggestions for further steps Further client information can be imported from other client files such as Word Excel documents 30 16 Background information 16 1 Environment required for administering LiSN S A sound treated room is required as all the LISN S norms were gathered in such sound treated rooms 16 2 Administering LiSN S The LISN S test should be administrated by audiologists or suitably qualified professionals in a sound treated environment The licence warrants that you and any Person that you permit to use the Software are Suitably qualified or are legally entitled to give the test and are competent to use the Software 16 3 The Listening In Spatialized Noise Sentences Test LISN The Listening in Spatialized Noise Sentences Test or LISN S was developed to assess auditory stream segregation skills in children with suspected auditory processing disorder APD Auditory stream segregation is the process by which a listener is able to differentiate the various auditory signals which arrive simultaneously at the ears and form meaningful representations of the incoming acoustic signals Auditory cues such as the lo
19. indow opens You are asked if you want to save this value and stop the test If you press Yes the pop up window closes and you can either choose to continue Continue or reset Reset the test Both buttons are on the right hand side Final SRT The patient s final SRT Speech Reception Threshold in any condition is calcu lated as the average SRT over the scored sentences and is displayed in the SRT dB box 10 The ducks quacked 0 4 Completion of the condition The condition is completed after its final sentence has been scored A pop up window opens signalling the completion of the test in the specific condition e g Different Voices 90 Press OK in the pop up window to continue with the next LISN S condition 20 Completion of the LiSN S test The patient must be assessed in all four LISN S conditions presented in the following order Different Voices 90 Same Voice 90 Different Voices 0 Same Voice 0 Test results The results are automatically recorded in the Client Session 10 Client data Data protection Client data information in the Client List is stored in the client database See the lower section of the Client screen outlined in red below The tabs and buttons associated with this client database list are described below Look for Enter client details either first or last name to pull up a particular client s records All The full client list can
20. ine each participant s speech reception threshold SRT Up to 30 sentences are presented in each of four conditions of distracter location and voice different voices at 90 DV 90 same voice at 90 SV 90 different voices at 0 DVO and same voice at 0 SVO resulting in a maximum of 120 sentences presented The first few sentences played a minimum of 5 are considered practice sentences This practice testing continues until one upward reversal in performance is recorded i e the sentence score drops below 50 percent of words correct Practice sentence scores do not form part of a child s final SRT scores Testing stops in a particular condition when the listener has either a completed the entire 30 sentences in any one condition or b completed the practice sentences plus a minimum of a further 17 scored sentences and their standard error calculated automatically in real time over the scored sentences is less than 1 dB A listener s performance is measured as two speech reception threshold SRT and three advantage measures The advantage measures represent the benefit in dB gained when either different talkers spatial cues or both talker and spatial cues combined are incorporated in the maskers The use of difference scores to measure performance in the LISN S test minimizes the influence of higher order language learning and communication functions on test performance For example as such skills affect both t
21. ning condition i Same Voice 90 Condition Now the tricky people will be next to you again but their voices will be a bit different Ignore them and just listen for Miss Smith ii Different Voices 0 Condition Now the tricky people will be next to Miss Smith Just listen for the beep and the sentence Same Voice 0 Condition Now the tricky people will be next Miss Smith and their voices will be very similar to Miss Smith s voice So you will have to listen very hard for the beep and Miss Smith 16 11 LiSN S test summary Presentation Order A client is assessed on four LISN S conditions which must be presented in the following order 1 Different Voices 90 2 Same Voice 90 3 Different Voices 0 4 Same Voice 0 Presentation Levels The competing speech is presented at a constant level of 55 dB SPL The target sentences are initially presented at a level of 62 dB SPL that Is a 7 dB signal to noise ratio SNR Child s task The child s task is to repeat as many words as possible after hearing each target sentence Warning tone A 1000 Hz tone burst is presented before each sentence to alert the listener that a sentence will be presented A silent gap of 0 5 sec separates the tone burst from the onset of the sentence The tone burst is presented at a constant level of 55 dB SPL 3g SNR The SNR is adjusted adaptively in each condition to determine each participant s speech rece
22. ntage measure compared to the normal hearing controls The cut off scores were calculated as 2 standard deviations of the residuals below the mean As there was a trend of improved performance with age across LISN S measures the cut off scores are adjusted for age The cut off scores are calculated automatically by the LISN S software following the completion of each LiSN S condition 40 16 13 List of references Cameron S Brown D Keith R Martin J Watson C amp Dillon H 2009 Development of the North American Listening in Spatialized Noise Sentences Test NA LISN S Sentence equivalence normative data and test retest reliability studies Journal of the American Academy of Audiology 20 2 TBA Cameron S amp Dillon H 2008 The Listening in Spatialized Noise Sentences Test Comparison to prototype LISN test and results from children with either a suspected central auditory processing disorder of a confirmed language disorder Journal of the American Academy of Audiology 19 5 377 391 Cameron S amp Dillon H 2007a Development of the Listening in Spatialized Noise Sentences Test LISN S Ear and Hearing 28 2 196 211 Cameron S amp Dillon H 20076 The Listening in Spatialized Noise Sentences Test LISN S Test retest reliability study nternational Journal of Audiology 46 145 153 Detailed references are given in the guidelines background information and articles listed
23. o develop one sided critical difference scores These scores are needed to infer that there has been a genuine improvement in auditory performance on retest taking into account mean practice effects and day to day fluctuations in performance As such the critical difference scores can be used to determine whether a child s LISN S performance has genuinely improved following a period of remediation or compensation with an assistive listening device The critical difference scores for each LISN S SRT and advantage measures for the Australian and North American version of the test are provided North American and Canadian Critical Difference Scores Correction Factor SD of Critical Mean Test the Mean Difference Condition Retest Difference Test Retest 1 64 x SD Including Difference Correction dB dB dB dB Low Cue SRT 3 4 cman it __ c 3 0 Talker Advantage Spatial Advantage ceo ae Australian Critical Difference Scores Correction Factor SD of Critical Mean Test the Mean Difference Condition Retest Difference Test Retest 1 64 x SD Including Difference Correction dB dB dB dB Low Cue SRT 2 5 oo M a T EE T E E l Ea an Spatial Advantage 3 5 Total Advantage M of 16 9 Practicing the LiSN S test In each of the four LISN S test conditions the first few sentences a minimum of 5 are considered practice sentences These practice sentences continue until one upward reversal in performance is
24. og had a bone Good that s easy isn t it But there s a trick At the same time as Miss Smith is telling you the sentence there are some very tricky people talking Sometimes the tricky people sound like they are standing in front of you right next to Miss Smith and sometimes they will sound like they are standing next to you No matter where the tricky people are don t want you to listen to them stress this to the child Just listen for the beep and the sentence Miss Smith always starts out louder than the tricky people so you shouldn t have any trouble hearing her But sometime the tricky people get loud 38 f you only hear a bit of the sentence want you to tell me all the words that you hear because give you a mark for each word you get right stress this to the child So if you just heard dog and bone what would you say Child repeats dog and bone Great If you don t hear Miss Smith at all just shake your head and I ll go straight on to the next sentence Once you ve heard the sentence tell me what you ve heard straight away so you don t forget it n the first few sentences the tricky people will be standing right next to you Don t listen to them stress this to the child Just concentrate on what Miss Smith is saying in front The tricky people start first and then Miss Smith starts a few seconds later Ready Describe where the tricky people are before each liste
25. onak LiSN S partners oo 33 a9 J33 39 40 40 40 40 40 40 41 41 42 43 1 Welcome The Listening in Spatialized Noise Sentences Test or LISN S assesses the ability of children to understand speech when there is noise coming from different directions Understanding speech in competing noise is a problem commonly experienced by children with auditory processing disorder APD LiSN S uses a totally new and ingenious way of testing these children s auditory skills LISN S will support you in your clinical decisions and help you determine whether a child s listening skills have improved after some form of intervention LISN S was developed by Dr Sharon Cameron a research scientist at National Acoustics Laboratories NAL in Australia along with Dr Harvey Dillon NAL s director Both are highly respected in the international scientific community for their innovative and outstanding contributions The test s inventor Dr Sharon Cameron has applied the highest standards of scientific rigor in designing and validating LISN S It is a model for how tests in this area should be developed Phonak the exclusive worldwide distributor of LISN S is proud and privileged to be associated with NAL Further resources To find out more about LISN S visit our website www LiSN S com The following symbol appears in this user guide A Important note for all users 2 Legal hint Use this software only after reading and accepting
26. ption threshold SRT For LISN S SRT can be defined as the SNR that yields 50 percent intelligibility SNR adjustment If the child correctly identifies more than 50 percent of words in the sentence the amplitude of the next sentence is reduced If the child correctly identifies less than 50 percent of words the amplitude of the next sentence is increased The SNR is not adjusted if a response of exactly 50 percent correct is recorded Level adjustment in dB The level of the target sentences is adjusted in 4 dB steps until the first upward reversal in performance is recorded and in 2 dB steps thereafter Number of sentences presented Up to 30 sentences are presented in each of the four LISN S conditions Testing ceases automatically in a particular condition when the listener has either completed the entire 30 sentences in any one condition or completed the practice sentences plus a minimum of a further 17 scored sentences and his or her standard error calculated over the scored sentences Is less than 1 dB Thus after 22 to 30 sentences the test finishes and the child s speech reception threshold SRT is calculated Final SRT The listener s final SRT in any condition is calculated as the average SRT over the scored sentences and is displayed in the SRT dB box 16 12 Cut off scores LISN S cut off scores represent the level below which a child is considered to have displayed disordered performance on a particular SRT or adva
27. r headphones can be used with the LiSN S software without invalidat ing the results of the test 4 2 Phonak soundcard Connect the Phonak soundcard to your computer The LiISN S software will not run unless the Phonak soundcard is connected to the computer via USB The output of the Phonak soundcard in dB SPL is automatically set to the correct level by the LISN S software No other soundcard can be used with the LiSN S software without invalidat ing the data and affecting the spatial qualities of the speech stimuli LiSN S is protected and can only be run with the Phonak soundcard supplied Protect this soundcard from theft destruction and loss 5 System requirements Windows 2000 XP Vista Hard disk space Minimum 20 MB Recommended 100 MB CD ROM drive Minimum RAM 64 MB 6 Installation 6 1 Installing the LiSN S equipment You need a personal desktop computer or laptop that is capable of playing audio An attached printer is recommended for printing out the LISN S reports as is Adobe Acrobat Reader 5 0 or higher available for free from www adobe com Remove the LISN S hardware equipment from the packaging material Make sure your Phonak soundcard is recognized by your PC Connect the Phonak soundcard to your computer s free USB slot Do not extract the soundcard until it has been recognized by Windows Unscrew the large jack from the end of the Sennheiser headphone cable Conne
28. r point of sale This entitles you to 2 years of warranty cover Phonak soundcard The soundcard is your LiSN S security It has a unique serial number Your LISN S sales contact will note the serial number of your Phonak soundcard below This will be required in the event of a warranty claim or repair Phonak soundcard serial number Date of purchase LISN S serial number Protect your Phonak soundcard from theft destruction and loss Legal and handling issues should follow our recommendations 42 19 List of Phonak LiSN S partners Australia Phonak Australasia Pty Ltd Baulkham Hills N S W 2153 Canada Phonak Canada Limited Mississauga Ontario L5WOB3 New Zealand Phonak New Zealand Ltd Takapuna Auckland 9 Singapore Phonak Hearing Systems Indomed Singapore Pte check United Kingdom Phonak UK Limited Warrington Cheshire WA1 1PP USA Phonak LLC Warrenville IL 60555 3927 Manufacturer Phonak Communications AG Laenggasse 17 CH 3280 Murten Switzerland 43
29. rdered performance on any of the SRT or advantage measures by comparing performance to normal hearing controls 16 7 Normative data Normative data exists for North American English and for Australian English North American English should be used in the United States and Canada Australian English should be used in Australia and New Zealand Norms are currently also being developed for the United Kingdom In North America the normative data was collected from 72 normal hearing children aged 6 years 2 months to 11 years 10 months Cameron Brown Keith Martin Watson amp Dillon 2009 In Australia the normative data was collected from 70 normal hearing children aged 6 years O months up to 11 years 11 months Cameron and Dillon 2007 Additional normative data for older children and adults will soon be available The results of the LiSN S test are invalid for children outside the age range stipulated in the software 16 8 Test Retest reliability and critical difference scores Retest reliability data was obtained for LISN S Re testing was carried out between 2 months and 3 months after initial testing Differences in mean SRT advantage score between the initial test and retest were small across performance measures Test retest differences did not vary significantly with age Full details can be found in Cameron amp Dillon 2007 and Cameron Brown Keith Martin Watson amp Dillon 2009 36 The test retest data was utilized t
30. suggestive of a spatial stream segregation disorder The client was within normal limits on all measures consistent with normal spatial stream segregation 28 15 Reports Client reports are generated automatically by the LISN S software Hl F li i i The software indicates clearly for all five measures whether a child is within or outside normal limits Client reports can be viewed mid way through the testing process However only the performance measures that can be calculated from the conditions completed will be tabulated in the Client s score table and variable standard deviation columns of the report and displayed on the graph 29 The horizontal line on the graph shows the various LISN S SRT and advantage measures The vertical axis indicates the variation from the mean normative data score in standard deviations The blue line on the graph represents the mean normative data scores for a child of the same age as the client that is zero standard deviations from the mean The green line represents the client s results in standard deviations from the mean normative data score The red line represents the cut off score below which performance on the various LISN S SRT and advantage measures is considered outside normal limits These results are tabulated above the graph along with details of whether the client is within or outside the normal limits for a particular measure In t
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