Ignite Creation Date:
2024-05-06 @ 8:21 PM
Last Modification Date:
2024-10-26 @ 3:25 PM
Study NCT ID:
NCT06340919
Status:
ENROLLING_BY_INVITATION
Last Update Posted:
2024-04-02
First Post:
2024-03-24
Brief Title:
Hearing Aid Algorithms for Sudden Sounds
Sponsor:
Purdue University
Organization:
Purdue University
Study Overview
Official Title:
Hearing Aid Algorithms for Sudden Sounds
Status:
ENROLLING_BY_INVITATION
Status Verified Date:
2024-03
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
This study explores the impact of hearing aid settings for managing sudden sounds on speech comprehension and recall in individuals with hearing loss Participants will undergo a comprehensive audiological evaluation case history and cognitive assessments Subsequently they will participate in listening experiments designed to measure sentence recognition storage and retrieval under various sudden sound reduction conditions recorded through a hearing aid The experiment will be complemented by subjective preference ratings to identify participant comfort and listening clarity associated with different sudden sound reduction settings
Detailed Description:
Participants will first undergo a comprehensive audiologic test battery and questionnaires The audiologic test battery will consist of a pure tone audiometry basic and extended high frequency b tympanometry c wideband acoustic immittance d acoustic reflexes and e otoacoustic emissions They will also complete online questionnaires at home a loudness and annoyance b noise exposure c general survey concerning hearing in difficult situations medical and otologic history noise exposure tinnitus balance sensory sensitivity lights sound touch smell taste and amplification In addition they will complete online tests of temporal gap detection
Participants who meet the study inclusion criteria hearing aid candidacy based on air conduction thresholds between 2000 and 6000 Hz will return to the lab for two additional sessions During the first session before starting the main experiment they will complete the Working Memory Questionnaire Vallat-Azouvi et al 2012 which evaluates short-term storage attention and executive control The first main experiment evaluates sentence recognition storage and retrieval Participants will hear two sentences in a row one by a male or female talker and the other by a person of the opposite gender Participants are asked to remember the first sentence while listening to the second sentence They will be asked to repeat the last sentence aloud a measure of sentence recognition Then they will be asked to type the first sentence a measure of sentence storage and retrieval Most but not all sentences will have sudden soft sounds and one sudden loud sound Participants will hear each pair of sentences only once they will not be allowed to replay the audio
Sentence pairs were recorded through hearing aids in an anthropomorphic manikin with one of four treatments for sudden sounds 1 off 2 low 3 high and 4 maximum Participants will listen to 36 sentence pairs for each of the four treatments All will contain sudden soft sounds eg keyboard typing footsteps chewing etc throughout the two sentences half will contain a sudden loud sound eg gunshot door slamming iPhone notification etc at the onset of a keyword in the first sentence and the other half in the second sentence Control stimuli do not contain sudden sounds Conditions assigned to each sentence list 18 pairs will be randomly assigned to each sentence participant In addition all stimuli were recorded using one of eight standardized audiometric configurations Participants will listen to the recordings made with the audiogram that best matches the hearing loss in one of their ears Participants can scale the overall output up or down 15 dB to accommodate differences in loudness preferences Finally all recordings were filtered before playback to remove the resonance associated with the external ear properties of the anthropomorphic manikin using the test earphones
Participants will return to the lab for a second session in which they will rate their preferences for the different sudden sound reduction settings Before beginning the experiment they will complete the Visual Letter Monitoring VLM test Gatehouse et al 2003 The VLM test assesses attention reaction time continuous performance and working memory capabilities Participants will observe letters displayed one at a time in large font on a computer screen Letters will switch between vowels and consonants in an unbroken sequence with intervals of 2 slow or 1 second fast Participants will press the space bar on the computer keyboard or a button on the touchscreen whenever three sequential letters Consonant-Vowel-Consonant form a word
For the subjective preference portion of the experiment participants listen to sentences recorded with two different sudden sound reduction settings 6 combinations comprised of off low high or maximum Each sentence will be played twice in succession but with different pairs of settings from trial to trial Following each trial they will select which setting they prefer overall Additionally they will choose the setting they favor more for the speech identified as the clearest most natural and least distorted and the setting they favor for the noise deemed the most comfortable least annoying and softest To indicate their preference participants will press the 1 button if the first setting was more to their liking or the 2 button if they found the second setting superior Participants are permitted to revise their choice and switch their selection They can re-listen to the sentence pairing as many times as needed Participants will listen to 72 sentences for each combination of settings to provide sufficient power to conduct single-subject statistical analyses
Participants who meet the study inclusion criteria hearing aid candidacy based on air conduction thresholds between 2000 and 6000 Hz will return to the lab for two additional sessions During the first session before starting the main experiment they will complete the Working Memory Questionnaire Vallat-Azouvi et al 2012 which evaluates short-term storage attention and executive control The first main experiment evaluates sentence recognition storage and retrieval Participants will hear two sentences in a row one by a male or female talker and the other by a person of the opposite gender Participants are asked to remember the first sentence while listening to the second sentence They will be asked to repeat the last sentence aloud a measure of sentence recognition Then they will be asked to type the first sentence a measure of sentence storage and retrieval Most but not all sentences will have sudden soft sounds and one sudden loud sound Participants will hear each pair of sentences only once they will not be allowed to replay the audio
Sentence pairs were recorded through hearing aids in an anthropomorphic manikin with one of four treatments for sudden sounds 1 off 2 low 3 high and 4 maximum Participants will listen to 36 sentence pairs for each of the four treatments All will contain sudden soft sounds eg keyboard typing footsteps chewing etc throughout the two sentences half will contain a sudden loud sound eg gunshot door slamming iPhone notification etc at the onset of a keyword in the first sentence and the other half in the second sentence Control stimuli do not contain sudden sounds Conditions assigned to each sentence list 18 pairs will be randomly assigned to each sentence participant In addition all stimuli were recorded using one of eight standardized audiometric configurations Participants will listen to the recordings made with the audiogram that best matches the hearing loss in one of their ears Participants can scale the overall output up or down 15 dB to accommodate differences in loudness preferences Finally all recordings were filtered before playback to remove the resonance associated with the external ear properties of the anthropomorphic manikin using the test earphones
Participants will return to the lab for a second session in which they will rate their preferences for the different sudden sound reduction settings Before beginning the experiment they will complete the Visual Letter Monitoring VLM test Gatehouse et al 2003 The VLM test assesses attention reaction time continuous performance and working memory capabilities Participants will observe letters displayed one at a time in large font on a computer screen Letters will switch between vowels and consonants in an unbroken sequence with intervals of 2 slow or 1 second fast Participants will press the space bar on the computer keyboard or a button on the touchscreen whenever three sequential letters Consonant-Vowel-Consonant form a word
For the subjective preference portion of the experiment participants listen to sentences recorded with two different sudden sound reduction settings 6 combinations comprised of off low high or maximum Each sentence will be played twice in succession but with different pairs of settings from trial to trial Following each trial they will select which setting they prefer overall Additionally they will choose the setting they favor more for the speech identified as the clearest most natural and least distorted and the setting they favor for the noise deemed the most comfortable least annoying and softest To indicate their preference participants will press the 1 button if the first setting was more to their liking or the 2 button if they found the second setting superior Participants are permitted to revise their choice and switch their selection They can re-listen to the sentence pairing as many times as needed Participants will listen to 72 sentences for each combination of settings to provide sufficient power to conduct single-subject statistical analyses
Study Oversight
Has Oversight DMC:
None
Is a FDA Regulated Drug?:
False
Is a FDA Regulated Device?:
True
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?:
None