To provide a voice articulation improving method and a voice articulation improving system capable of improving an effect by voice articulation improving processing by accurately measuring noise power even if there is a delay from a time when a voice data RG are generated to a time when the voice is detected by a microphone.
A voice data stream which is outputted by a voice data generating section is multiplied by a predetermined gain and inputted to a speaker, and a voice signal detected by the microphone is taken at a predetermined length unit. An output start time and an output end time of the voice data stream are monitored, and a taking start time and an end time of the voice data stream of the predetermined length which is taken by the microphone are monitored. It is determined whether or not the voice data stream of the predetermined length which is taken by the microphone is the voice data stream in a noise section by using each of the time, and the noise power is detected by using the voice data stream of the noise section. When it is not the noise section, voice power is detected based on the voice data stream, the gain which is multiplied with the voice data stream is determined by using the noise power and the voice power.
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Nozomi Saito
Toru Marumoto
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