Patent ID: 8837752
Filing Date: 2014-09-16
Classification: G10H,H04H,H04R

Abstract:
1. A mixing apparatus having a plurality of input channels which receive a plurality of audio signals from a plurality of microphones, respectively, the mixing apparatus controlling characteristic of the input audio signals in the input channels, respectively, mixing the audio signals received by the input channels to obtain a mixed audio signal and then outputting the mixed audio signal, the mixing apparatus comprising: a plurality of delay portions which are provided for the input channels, respectively, and delay the input audio signals, respectively; a first designation portion which designates one of the input channels as a reference channel; a second designation portion which designates at least one of the input channels as a target channel; a time difference detector which detects a time difference of timing at which the target channel receives an audio signal representative of a test tone generated by a single tone generator and collected by one of the microphones which supplies audio signals to the target channel, from timing at which the reference channel receives an audio signal representative of the test tone collected by another one of the microphones which supplies audio signals to the reference channel; and a delay controller which controls the respective delay portions provided for the reference channel and the target channel in accordance with the time difference, detected by the time difference detector, in the timing at which the audio signals are received so that the difference in the timing at which the reference channel and the target channel receive the audio signals, respectively, will be eliminated.