Data processing: speech signal processing – linguistics – language – Speech signal processing – Application
Patent
1997-08-29
1999-10-05
Wieland, Susan
Data processing: speech signal processing, linguistics, language
Speech signal processing
Application
84610, 84619, 84616, 434307A, G10L 900, G09B 500
Patent
active
059639075
ABSTRACT:
A voice converter provides for pitch and formant shifting of an input voice signal. An audio filter extracts the volume level of the input voice signal, and outputs the extracted volume level as first volume data. A second audio filter extracts the volume level of an output voice signal, and outputs the extracted volume level as second volume data. A difference judging circuit compares the first and second volume data with each other, and determines a volume gain and a distorting factor which is supplied to a distortion circuit. When the volume of the output voice after conversion is smaller than that of the input voice, the volume gain is increased. In a case where the input voice is to be shifted toward higher frequencies, when the volume of the output voice after conversion is smaller than that of the input voice, it is determined that the volume of a high-pitched sound region is insufficient, and the distorting factor is increased in order to enlarge the amount of higher harmonics which are to be added to the input voice.
REFERENCES:
patent: 5278346 (1994-01-01), Yamaguchi
patent: 5361324 (1994-11-01), Takizawa et al.
patent: 5569038 (1996-10-01), Tubman et al.
patent: 5617478 (1997-04-01), Tagami et al.
patent: 5621182 (1997-04-01), Matsumoto
patent: 5641926 (1997-06-01), Gibson et al.
patent: 5750912 (1998-05-01), Matsumoto
Wieland Susan
Yamaha Corporation
LandOfFree
Voice converter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Voice converter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Voice converter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1183304