Patent ID: 7599836

Claim:
A voice processing method, comprising: performing a first voice process, a second voice process, and a third voice process by a voice processor realized by a computer on voice signals recorded on a microphone, wherein the first voice process to inverses one of a plurality of polarities of two-channel voice signals for voice signals obtained through the microphone, and wherein the second voice process changes one of a plurality of signal powers of the two-channel voice signals for voice signals obtained through the microphone, and wherein the third voice process delays one of the two-channel voice signals for voice signals obtained through the microphone, and mixes the voice signals per channel; analyzing mixed two-channel voice signals according to characteristics of the mixed two-channel voice signals; analyzing a difference of the mixed two-channel voice signals to determine a speaker of the mixed two-channel voice signals; determining a voice signal in which the first voice process has been applied, and the signal power of the voice signal in a predetermined segment has been increased, and specifying the microphone that recorded said voice signal; changing one of the signal powers of the mixed two-channel voice signals; summing the two-channel voice signals to determine the voice signal in the segment as the voice signal in which the second voice process was applied to the integral multiple of the original signal power, for an increase in the signal power of the voice signal in the predetermined segment; summing the two channel voice signals after correcting a delay by the voice processing unit on one of the mixed two channel voice signals; determining that the second voice process was applied to the voice signal in the segment after the signal power of the voice signal in the predetermined segment is increased to the integral multiple of the original signal power; and determining that at least one of a plurality of microphones have recorded the voice signal.