Dataset Information

The Influence of High-Frequency Envelope Information on Low-Frequency Vowel Identification in Noise.

ABSTRACT: Vowel identification in noise using consonant-vowel-consonant (CVC) logatomes was used to investigate a possible interplay of speech information from different frequency regions. It was hypothesized that the periodicity conveyed by the temporal envelope of a high frequency stimulus can enhance the use of the information carried by auditory channels in the low-frequency region that share the same periodicity. It was further hypothesized that this acts as a strobe-like mechanism and would increase the signal-to-noise ratio for the voiced parts of the CVCs. In a first experiment, different high-frequency cues were provided to test this hypothesis, whereas a second experiment examined more closely the role of amplitude modulations and intact phase information within the high-frequency region (4-8 kHz). CVCs were either natural or vocoded speech (both limited to a low-pass cutoff-frequency of 2.5 kHz) and were presented in stationary 3-kHz low-pass filtered masking noise. The experimental results did not support the hypothesized use of periodicity information for aiding low-frequency perception.

SUBMITTER: Schubotz W

PROVIDER: S-EPMC4701218 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature

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The Influence of High-Frequency Envelope Information on Low-Frequency Vowel Identification in Noise.

Schubotz Wiebke W Brand Thomas T Kollmeier Birger B Ewert Stephan D SD

PloS one 20160105 1

Vowel identification in noise using consonant-vowel-consonant (CVC) logatomes was used to investigate a possible interplay of speech information from different frequency regions. It was hypothesized that the periodicity conveyed by the temporal envelope of a high frequency stimulus can enhance the use of the information carried by auditory channels in the low-frequency region that share the same periodicity. It was further hypothesized that this acts as a strobe-like mechanism and would increase ...[more]

PMID: 26730702

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Dataset Information

The Influence of High-Frequency Envelope Information on Low-Frequency Vowel Identification in Noise.

Publications

The Influence of High-Frequency Envelope Information on Low-Frequency Vowel Identification in Noise.

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