The University of Southampton
University of Southampton Institutional Repository

Modelling the Noise Source in Voiced Fricatives

Record type: Conference or Workshop Item (Other)

The classic model of voiced fricatives includes two sound sources, a periodic glottal source and a random noise source at the constriction. The amplitude of the noise source has long been assumed to be modulated by the voicing (Fan, 1960; Stevens, 1971; Flanagan, 1972), but the amount of this change has not been studied systematically, and the possibility of a change in spectral shape has been ignored. Spectral analysis of a voiced fricative that is F0-synchronized by the use of a simultaneous laryngograph channel shows that modulation of the noise source by voicing causes not only amplitude changes but also changes in the spectral shape. These changes, consisting of a 5-dB variation in amplitude above 10kHz in [v], are consistent with changes observed in time-averaged spectra of sustained fricatives at different effort levels, and with spectra of mechanical models having different constriction shapes. The amount of spectral change due to such modulation is likely to vary with strength and place of the noise source, and thus will depend on the particular glottis-constriction coordination employed by the speaker. Extension of this work to more fricatives and more subjects is planned.

Full text not available from this repository.

Citation

Shadle, C.H. (1995) Modelling the Noise Source in Voiced Fricatives At Proc. 15th Int. Cong. on Acoustics. , p. 145.

More information

Published date: June 1995
Additional Information: Address: Trondheim, Norway
Venue - Dates: Proc. 15th Int. Cong. on Acoustics, 1995-06-01
Organisations: Electronics & Computer Science

Identifiers

Local EPrints ID: 250176
URI: http://eprints.soton.ac.uk/id/eprint/250176
PURE UUID: 2b1dc0e9-6d62-42b0-a014-dfb7b3810f51

Catalogue record

Date deposited: 04 May 1999
Last modified: 18 Jul 2017 10:43

Export record

Contributors

Author: C.H. Shadle

University divisions


Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×