# Identifying the perceptual factors that contribute to older listeners' dynamic pitch benefit for speech recognition in noise

> **NIH NIH R21** · WESTERN MICHIGAN UNIVERSITY · 2020 · $8,534

## Abstract

Abstract
The majority of older adults with hearing loss, which is as large as one tenth of the U.S. population, have
significant difficulty understanding speech in noisy environments. The potential consequences that can stem
from this speech-in-noise problem include increased social isolation, cognitive decline, and psychological
disturbance. While current amplification technology has not solved the speech-in-noise problem, new
interventions have the potential to improve speech recognition in noise by engaging and enhancing perceptual
cues, such as dynamic pitch. Dynamic pitch, as defined by the variation of fundamental frequency, aids speech
recognition in noise for older adults with hearing loss. The variability, however, is substantial across individuals.
To achieve the ultimate goal of enhancing dynamic pitch and improve speech recognition in noise, it is critical
to understand the variability in older individuals’ benefit from dynamic pitch cues. This proposal aims to identify
the perceptual factors contributing to this variability in dynamic pitch benefit among older individuals with
hearing loss. The first specific aim is to establish the contribution of spectral perception to the individual
variability in dynamic pitch benefit among older individuals with hearing loss. Older individuals’ ability to
perceive static and dynamic spectral cues will be measured. It is hypothesized that poor performance in one or
both of these two tasks will significantly contribute to an older individual’ inability to benefit from dynamic pitch
cues in noise. The second specific aim is to determine the role of dynamic pitch glimpsing ability in dynamic
pitch benefit for speech recognition in noise among older individuals with hearing loss. Older individuals’
dynamic pitch glimpsing ability will be characterized using a novel metric that simulates pitch perception in
continuous speech. The dynamic pitch glimpsing ability is anticipated to be a significant factor that influences
individuals’ dynamic pitch benefit in fluctuating noise. Drawn upon auditory scene perception theory, the third
specific aim is to identify the relationship between older individuals’ ability to use pitch cues for stream
segregation and dynamic pitch benefit in speech maskers. It is hypothesized that individuals with poor stream
segregation ability are less capable of utilizing dynamic pitch cues to separate target speech from masker and
in turn, benefit less from dynamic pitch in speech recognition. Older individuals’ ability to use pitch cues for
stream segregation will be measured with a multi-tone pattern segregation task. This measure will be used to
predict individuals’ dynamic pitch benefit in speech maskers. Research outcomes will provide a better
understanding of the perceptual factors that contribute to the highly variable benefit from dynamic pitch in older
individuals with hearing loss. This information will serve as the foundation for the development of different pitch
enhan...

## Key facts

- **NIH application ID:** 9840468
- **Project number:** 5R21DC017560-02
- **Recipient organization:** WESTERN MICHIGAN UNIVERSITY
- **Principal Investigator:** Jing Shen
- **Activity code:** R21 (R01, R21, SBIR, etc.)
- **Funding institute:** NIH
- **Fiscal year:** 2020
- **Award amount:** $8,534
- **Award type:** 5
- **Project period:** 2019-05-01 → 2020-08-15

## Primary source

NIH RePORTER: https://reporter.nih.gov/project-details/9840468

## Citation

> US National Institutes of Health, RePORTER application 9840468, Identifying the perceptual factors that contribute to older listeners' dynamic pitch benefit for speech recognition in noise (5R21DC017560-02). Retrieved via AI Analytics 2026-05-23 from https://api.ai-analytics.org/grant/nih/9840468. Licensed CC0.

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