Method and apparatus for tonal modification of voice

The invention discloses a speech tone modification method and a device thereof, which are used to realize the self-adaptive tone modification of speech. The speech tone modification method provided by the invention comprises the following steps: received speech is subjected to pitch detection to determine the pitch period of the speech; the range of pitch period to which the pitch period of the speech belongs is determined; according to the preset corresponding relation between the range of the tone period and pitch modification parameters, the tone modification parameters corresponding to the range of the pitch period to which the pitch period of the speech belongs is obtained; and the tone modification parameters are adopted to carry out tone modification processing to the speech. The speech tone modification method and the device are used for realizing the self-adaptive tone modification of the speech and avoids the fact that the prior art needs the user to fixedly change tone through manually setting the tone rising amplitude or the tone falling amplitude, thereby being convenient to operate by the user and improving the accuracy of tone modification.