Electrical audio signal processing systems and devices – Monitoring/measuring of audio devices – Loudspeaker operation
Patent
1982-05-06
1986-11-18
Kemeny, E. S. Matt
Electrical audio signal processing systems and devices
Monitoring/measuring of audio devices
Loudspeaker operation
3645135, 381 52, G10L 500
Patent
active
046240128
ABSTRACT:
Method and apparatus for converting voice characteristics of synthesized speech from a single applied source of synthesized speech in a manner obtaining modified voice characteristics pertaining to the apparent age and/or sex of the speaker. The apparatus is capable of altering the voice characteristics of synthesized speech to obtain modified voice sounds simulating child-like, teenage, adult, aged and sexual preference characteristics by control of vocal track parameters including pitch period, vocal tract model, and speech data rate. A source of synthesized speech having a predetermined pitch period, a predetermined vocal tract model, and a predetermined speech rate is separated into the respective speech parameters. The values of pitch, the speech data frame length, and the speech data rate are then varied in a preselected manner to modify the voice characteristics of the synthesized speech from the source thereof. Thereafter, the changed speech data parameters are re-combined into a modified synthesized speech data format having different voice characteristics with respect to the synthesized speech from the source, and an audio signal representative of human speech is generated from the modified synthesized speech data format from which audible synthesized speech may be generated.
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Frantz Gene A.
Henderson Alva E.
Lin Kun-Shan
Comfort James T.
Heiting Leo
Hiller William E.
Kemeny E. S. Matt
Texas Instruments Incorporated
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