Clinical Results of Hearing Aid with Noise-Level-Controlled Selective Amplification

Ono, Hiroshi; Kanzaki, Jin; Mizoi, Kazutoshi

doi:10.3109/00206098309072810

Cited by 18 publications

(8 citation statements)

References 12 publications

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“…This result is in contrast to some past studies that have shown no improvement using this technique (Fabry & Van Tasell, 1990;Klein, 1989). Three possible differences between the current study and past studies (Dempsy, 1987;Fabry & Van Tassell, 1990;Klein, 1989;Ono et al, 1983;Rankovic et al, 1992;van Dijkhuizen, Anema & Plomp, 1987;van Dijkhuizen et al, 1989;van Dijkhuizen et al, 1990;van Dijkhuizen, Festen & Plomp, 1991) may account for the different results: (1) reliance on nonideal detectors, (2) the use of fewer frequency bands for gain manipulations, and (3) sluggish manipulation of the gains. The combination of these differences may have led to the large improvements shown in the current study with respect to previous studies.…”

Section: Discussioncontrasting

confidence: 85%

“…In this strategy, the gain of each frequency band is timevarying; when the SNR within the band is high (e.g., favorable), the gain is high, when the SNR is low, the gain for that frequency band is reduced. This strategy has been shown to be effective when the noise is limited to one frequency band (Rankovic et al, 1992), but the results conflict when the noise is spread over a wide band of frequencies (Fabry & Van Tasell, 1990;Klein, 1989;Ono, Kanzaki & Mizoi, 1983). There have been several implementations of this strategy, all of which have used their own, unique speech-component detectors to determine when to change the gain within each frequency band.…”

Section: Discussionmentioning

confidence: 94%

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Determination of the Potential Benefit of Time-Frequency Gain Manipulation

et al. 2006

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Section: Discussioncontrasting

confidence: 85%

Section: Discussionmentioning

confidence: 94%

Determination of the Potential Benefit of Time-Frequency Gain Manipulation

et al. 2006

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“…Performance for the BILL circuit resulted significantly better speech intelligibility scores for all conditions. Similar results were found by Ono, Kanzaki, & Mizoi (1983). Their results showed an increase of up to a 15% improvement in speech recognition for 50 out of 53 of the subjects who had a sensorineural hearing loss, when the ASP circuit, BILL.…”

supporting

confidence: 77%

Speech Recognition with Linear and Non-linear Amplification in the Presence of Industrial Noise

Olson¹

2000

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In order to help reduce hearing loss, the Occupational Safety and Health Administration regulates noise levels in work environments. However, hearing aids are the primary rehabilitative service provided for individuals with an occupational hearing loss. Very little is being done to monitor hearing aid use in the work environment. Noise which may be safe to an unaided ear can amplified to levels that are damaging to the ear when a hearing aid is being worn. However, it is necessary for some individuals to wear amplification in these noisy environments for safety reasons. As a consequence it is important that these individuals be able to understand speech in the presence of industrial noise while wearing amplification.Sincere thanks to Tom Dolan for helping with this research project.Especially for the extra time and work he completed to allow this project to be completed quickly and efficiently while I was living in Colorado. Special thanks to my husband too for always believing in me and encouraging me through both the good times and the hard times. Lastly, thanks to my parents and brother for instilling in me the confidence and the ability to always strive to be the best I can be.

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“…(3) Multiband compression, as opposed to wideband compressors, can reduce the effects of upward spread of masking (e.g. van Dijkhuizen et al, 1991;Ono et al, 1983). By reducing the gain only in the band where the noise is present, the masking effect of the noise will be reduced without affecting the audibility of the parts of the speech spectrum remote from the frequency of the noise.…”

Section: Compression To Compensate For Reduced Dynamic Rangementioning

confidence: 97%

Non-Linear Signal Processing in Digital Hearing Aids

Lunner

Hellgren

Arlinger

et al. 1998

Scandinavian Audiology

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Lunner T, Hellgren J, Arlinger S, Elberling C. Non-linear signal processing in digital hearing aids. Scand Audiol 1998;27 Suppl 49: 40-49. Three different non-linear digital signal processing algorithms were developed: LinEar, DynEar and RangeEar. All three provided individual frequency shaping via a seven-band low-power filterbank and compression in two channels. RangeEar and DynEar used wide dynamic range syllabic compression in the low-frequency (LF) channel, while LinEar used compression limiting. In the highfrequency (HF) channel, RangeEar used a slow-acting automatic volume control, while DynEar and LinEar used compression limiting. Wearable digital signal processing-based experimental instruments were used to evaluate the fitting algorithms under real world conditions with experienced hearing aid users. Evaluation included laboratory testing of speech recognition in noise and questionnaires on sound quality ratings. Results did not indicate one general good-for-all algorithm, but different algorithms resulting in preference and performance depending on the hearing loss configuration. Preference for any of the new algorithms could be predicted based on auditory dynamic range measurements. It was hypothesized that the different preferences were affected by different susceptibility to masking of HF sounds by amplified LF sounds.

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Clinical Results of Hearing Aid with Noise-Level-Controlled Selective Amplification

Cited by 18 publications

References 12 publications

Determination of the Potential Benefit of Time-Frequency Gain Manipulation

Determination of the Potential Benefit of Time-Frequency Gain Manipulation

Speech Recognition with Linear and Non-linear Amplification in the Presence of Industrial Noise

Non-Linear Signal Processing in Digital Hearing Aids

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