Evidence map›Paper›PMID 33163529›Full record

ArticleInterspeech2019

On Mitigating Acoustic Feedback in Hearing Aids with Frequency Warping by All-Pass Networks.

Ching-Hua Lee, Kuan-Lin Chen, Fred Harris, Bhaskar D Rao, Harinath Garudadri

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Interspeech, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Ching-Hua LeeDepartment of Electrical and Computer Engineering, University of California, San Diego.
Kuan-Lin ChenDepartment of Electrical and Computer Engineering, University of California, San Diego.
Fred HarrisDepartment of Electrical and Computer Engineering, University of California, San Diego.
Bhaskar D RaoDepartment of Electrical and Computer Engineering, University of California, San Diego.
Harinath GarudadriDepartment of Electrical and Computer Engineering, University of California, San Diego.

Funding

Quantifying Physical and Social Isolation, and Assessing Perceived LonelinessR01DC015436 · NIDCD · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI GARUDADRI, HARINATH · 2016 to 2020
$2.4M
Self fitting of Amplification: Methodology and CandidacyR33DC015046 · NIDCD · SAN DIEGO STATE UNIVERSITY · PI GARUDADRI, HARINATH, MACKERSIE, CAROL L · 2017 to 2020
$2.0M
Self fitting of Amplification: Methodology and CandidacyR21DC015046 · NIDCD · SAN DIEGO STATE UNIVERSITY · PI GARUDADRI, HARINATH, MACKERSIE, CAROL L · 2016 to 2016
$222k
NIDCD NIH HHS R01 DC015436NIDCD NIH HHS R21 DC015046NIDCD NIH HHS R33 DC015046
6 · The paper itself

Abstract

Acoustic feedback control continues to be a challenging problem due to the emerging form factors in advanced hearing aids (HAs) and hearables. In this paper, we present a novel use of well-known all-pass filters in a network to perform frequency warping that we call "freping." Freping helps in breaking the Nyquist stability criterion and improves adaptive feedback cancellation (AFC). Based on informal subjective assessments, distortions due to freping are fairly benign. While common objective metrics like the perceptual evaluation of speech quality (PESQ) and the hearing-aid speech quality index (HASQI) may not adequately capture distortions due to freping and acoustic feedback artifacts from a perceptual perspective, they are still instructive in assessing the proposed method. We demonstrate quality improvements with freping for a basic AFC (PESQ: 2.56 to 3.52 and HASQI: 0.65 to 0.78) at a gain setting of 20; and an advanced AFC (PESQ: 2.75 to 3.17 and HASQI: 0.66 to 0.73) for a gain of 30. From our investigations, freping provides larger improvement for basic AFC, but still improves overall system performance for many AFC approaches.

Indexed as

adaptive feedback cancellationall-passfrequency shiftingfrequency warpinghearableshearing aids

Identifiers

PMID33163529
PMCPMC7643774

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.