Voice processing device, voice processing method, and computer program product

A voice processing method, comprising:

• receiving n input signals acquired by n voice input devices respectively corresponding respectively to n sound sources, n being an integer of 2 or more;
• separating the input signals based at least in part on the sound sources to produce n separation signals;
• according to a number of the sound sources that produces uttered voice sounds, switching between a first output signal produced based at least in part on the input signal and a second output signal produced based at least in part on the separation signal;
• and
• outputting the output signal.

A computer program product comprising a non-transitory computer readable medium including programmed instructions, the instructions, when executed by a computer, causing the computer to function as:

• a receiver configured to receive n input signals acquired by n voice input devices corresponding respectively to n sound sources, n being an integer of 2 or more;
• a separator configured to separate the input signals based at least in part on the sound sources to produce n separation signals;
• and
• an output controller configured to, according to a number of the sound sources that produce uttered voice sounds, switch between a first output signal produced based at least in part on the input signal and a second output signal produced based on the separation signal, wherein the output controller outputs the output signal.