| 摘要 |
Disclosed is a voice modulation apparatus and method thereof for use in a voice communication apparatus such as wired/wireless telephones, to modify voice by modifying voice pitch. The voice modulation apparatus includes: an LPC analyzer for obtaining a vocal track filter coefficients reflecting characteristics of an input voice signal; a pitch detector for detecting pitch and gender of the voice signal; a pitch modulator for modulating the voice signal by applying a predetermined value to a detected value from the pitch detector; and a coder for coding the input signal from the LPC analyzer and the pitch modulator and for outputting a coded signal. According to the voice modulation method, the pitch detector detects gender and pitch of an input voice signal, and the pitch modulator multiplies the detected value by a predetermined value for voice modulation.
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