SPEECH INTELLIGIBILITY IMPROVING APPARATUS AND COMPUTER PROGRAM THEREFOR

摘要

[Object] To provide a speech intelligibility improving apparatus capable of generating highly intelligible speech in various environments without unnecessarily amplifying sound volume.;[Solution] A speech intelligibility improving apparatus 250 includes: an envelope surface extracting unit 292 extracting, from a spectrum of speech signal 254 as an object of processing, a curve representing a general outline of peaks of spectral envelope in contact with or along local peaks of spectral envelope of the spectrum; a noise adapting unit 300 modifying spectrum of speech signal 254 based on the curve extracted by envelope surface extracting unit 292; and a sinusoidal wave speech synthesizing unit 305 generating a modified speech signal 260 for the speech improved in intelligibility based on the spectrum modified by noise adapting unit 300.

主权项

1. A speech intelligibility improving apparatus for generating an intelligible speech, comprising:
peak general outline extracting means for extracting, from a spectrum of a speech signal as an object, a general outline of peaks represented by a curve along a plurality of local peaks of a spectral envelope of the spectrum; spectrum modifying means for modifying the spectrum of said speech signal based on the general outline of peaks extracted by the peak general outline extracting means; and speech synthesizing means for generating a speech based on the spectrum modified by said spectrum modifying means.