Distinguishing spectral and temporal properties of speech using an information-theoretic approach

Thomas Ulrich Christiansen, Steven Greenberg

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Abstract

The spectro-temporal coding of Danish consonants was investigated using an information-theoretic analysis. Listeners identified eleven consonants spoken in CV[l] context. In each condition, only a portion of the original spectrum was played. Center frequencies of 750, 1500 and 3000 Hz, were presented individually and in combination with each other. The modulation spectrum of each band was low-pass filtered at 24, 12, 6 and 3 Hz. Confusion matrices of the consonant-identification data were computed, and from these the amount of information transmitted for the phonetic features – voicing, manner and place of articulation – was calculated. From these analyses we conclude that: (1) Decoding place-of-articulation information requires significant cross-spectral integration (2) Place of articulation depends on modulations above 6 Hz, and is crucial for consonant recognition (3) Voicing requires modulations between 3 and 6 Hz. (4) Manner depends on modulations greater than 12 Hz.
Original languageEnglish
Title of host publicationProceedings of the 16th. International Congress of Phonetic Sciences
Publication date2007
Pages737-740
Publication statusPublished - 2007
EventInternational Congress of Phonetic Sciences -
Duration: 1 Jan 2007 → …
Conference number: 16

Conference

ConferenceInternational Congress of Phonetic Sciences
Number16
Period01/01/2007 → …

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