Level considerations for chimeric processing: Temporal envelope and fine structure contributions to speech intelligibility

Fogerty, Daniel; Entwistle, Jenine L.

doi:10.1121/1.4935079

Cited by 4 publications

(3 citation statements)

References 15 publications

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“…It also carries information on manner and voicing, as well as prosody and suprasegmentals of speech (Rosen et al, 1990). The ability to preserve the temporal envelope resulted in better sound quality judgment (Neuman et al, 1995;1998;Hansen 2002;Souza, 2002) and aided in speech understanding (Van Tasell and Trine, 1996;Fogerty and Entwistle, 2015). The dependence on temporal envelope cue for speech understanding depends on the degree of hearing loss (Van Tasell and Trine, 1996), the availability of contextual cues from the input and other sources (Cox and Xu, 2010), and the cognitive capacity of the individual (Souza, 2000).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Efficacy of a Dual Variable Speed Compressor over a Single Fixed Speed Compressor

Kuk¹,

Slugocki²,

Korhonen³

et al. 2019

J Am Acad Audiol

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It has been suggested that hearing-impaired listeners with a good working memory (WM) should be fitted with a compression system using short time constants (i.e., fast-acting compression [FAC]), whereas those with a poorer WM should be fitted with a longer time constant (i.e., slow-acting compression [SAC]). However, commercial hearing aids (HAs) seldom use a fixed speed of compression.The performance of a variable speed compression (VSC) system relative to a fixed speed compressor (FAC and SAC) on measures of speech intelligibility, recall, and subjective report of listening effort and tolerable time was evaluated. The potential interaction with the listeners’ WM capacity (WMC) was also examined.A double-blinded, repeated measures design.Seventeen HA wearers (16 with greater than one year HA experience) with a bilaterally symmetrical, mild to moderately severe sensorineural hearing loss participated in the study.Participants wore the study HAs at three compression speeds (FAC, SAC, and VSC). Each listener was evaluated on the Office of Research in Clinical Amplification-nonsense syllable test (NST) at 50 dB SPL (signal-to-noise ratio [SNR] = +15 dB), 65 dB SPL (SNR = +5 dB), 80 dB SPL (SNR = 0 dB), and a split (80 dB SPL–50 dB SPL) condition. Listeners were also evaluated on a Repeat Recall Test (RRT), where they had to repeat six short sentences (both high- and low-context sentences) after each was presented. Listeners recalled target words in all six sentences after they were presented. They also rated their listening effort and the amount of time they would tolerate listening under the specific condition. RRT sentences were presented at 75 dB SPL in quiet, as well as SNR = 0, 5, 10, and 15 dB. A Reading Span Test (RST) was also administered to assess listeners’ WMC. Analysis of variance using RST scores as a covariate was used to examine differences in listener performance among compressor speeds.Listener performance on the NST was similar among all three compression speeds at 50, 65, and 80 dB SPL. Performance with FAC was significantly better than SAC for the split condition; however, performance did not differ between FAC and VSC or between SAC and VSC. Performance on the NST was not affected by listeners’ RST scores. On the RRT, there was no effect of compressor speed on measures of repeat, recall, listening effort, and tolerable time. However, VSC resulted in significantly lower (better) speech reception threshold at the 85% correct recognition criterion (SRT85) than FAC and SAC. Listener RST scores significantly affected recall performance on the RRT but did not affect SRT85, repeat, listening effort, or tolerable time.These results suggest that the VSC, FAC, and SAC yield similar performance in most but not all test conditions. FAC outperforms SAC, where the stimulus levels change abruptly (i.e., split condition). The VSC yields a lower SRT85 than a fixed compression speed at a moderately high level with a favorable SNR. There is no interaction between compression speed and the participants’ WMC.

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Section: Introductionmentioning

confidence: 99%

Evaluation of the Efficacy of a Dual Variable Speed Compressor over a Single Fixed Speed Compressor

Kuk¹,

Slugocki²,

Korhonen³

et al. 2019

J Am Acad Audiol

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“…Combined with the above evidence, this suggests that while TFS may enhance source segregation, it still appears to contribute to linguistic interference of segregated signals. This finding is significant regarding recent discussions related to the role of TFS for source segregation and linguistic processing (Apoux and Healy, 2013;Fogerty and Entwistle, 2015). …”

Section: Discussionmentioning

confidence: 59%

Speech recognition interference by the temporal and spectral properties of a single competing talker

Fogerty

2016

The Journal of the Acoustical Society of America

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This study investigated how speech recognition during speech-on-speech masking may be impaired due to the interaction between amplitude modulations of the target and competing talker. Young normal-hearing adults were tested in a competing talker paradigm where the target and/or competing talker was processed to primarily preserve amplitude modulation cues. Effects of talker sex and linguistic interference were also examined. Results suggest that performance patterns for natural speech-on-speech conditions are largely consistent with the same masking patterns observed for signals primarily limited to temporal amplitude modulations. However, results also suggest a role for spectral cues in talker segregation and linguistic competition.

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“…SPIN datasets : In Ref. 29 , the revised Speech Perception in Noise (SPIN) sentences 32 were used to assess the respective role of the acoustic temporal envelope and the temporal fine structure by adding noise to either component. The revised SPIN sentences include equal numbers of high and low predictability sentences, with strong and low contextual cues for the recognition of the target words, respectively.…”

Section: Datasetsmentioning

confidence: 99%

Modeling the effect of linguistic predictability on speech intelligibility prediction

Edraki

Chan

Fogerty

et al. 2023

JASA Express Letters

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Many existing speech intelligibility prediction (SIP) algorithms can only account for acoustic factors affecting speech intelligibility and cannot predict intelligibility across corpora with different linguistic predictability. To address this, a linguistic component was added to five existing SIP algorithms by estimating linguistic corpus predictability using a pre-trained language model. The results showed improved SIP performance in terms of correlation and prediction error over a mixture of four datasets, each with a different English open-set corpus.

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Level considerations for chimeric processing: Temporal envelope and fine structure contributions to speech intelligibility

Cited by 4 publications

References 15 publications

Evaluation of the Efficacy of a Dual Variable Speed Compressor over a Single Fixed Speed Compressor

Evaluation of the Efficacy of a Dual Variable Speed Compressor over a Single Fixed Speed Compressor

Speech recognition interference by the temporal and spectral properties of a single competing talker

Modeling the effect of linguistic predictability on speech intelligibility prediction

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