Patent ID: 8311831
Filing Date: 2012-11-13
Classification: G10L

Abstract:
1. A voice emphasizing device comprising: a processor; an emphasis utterance section detection unit configured to detect an emphasis section from an input speech waveform, the emphasis section being a time duration having a waveform intended by a speaker of the input speech waveform to be converted; and a voice emphasizing unit configured to increase fluctuation of an amplitude envelope of the waveform in the emphasis section detected by said emphasis utterance section detection unit from the input speech waveform, wherein said emphasis utterance section detection unit is configured to (i) detect a state from the input speech waveform as a state where a vocal cord of the speaker is strained, and (ii) determine a time duration of the detected state as the emphasis section, the state having a frequency of the fluctuation of the amplitude envelope of the waveform within a predetermined range from 10 Hz to lower than 170 Hz, wherein said voice emphasizing unit is configured to modulate the waveform to periodically fluctuate the amplitude envelope, using signals having a frequency in a range of 40 Hz to 120 Hz.