Patent ID: 7292697
Filing Date: 2007-11-06
Classification: H04R,H04S

Abstract:
1. An audio synthesizing system for causing a first loudspeaker and a second loudspeaker to produce sound by a first audio signal, a second audio signal and a third audio signal, said first audio signal, second audio signal and third audio signal being supplied from a sound source, said audio synthesizing system comprising: an input section for inputting the first audio signal, the second audio signal and the third audio signal; a dividing section for dividing the third audio signal into two divided third signals, which have a phase difference mutually in one frequency range; a first synthetic section for synthesizing one of the two divided third signals and the first audio signal into a first synthetic signal to output to the first loudspeaker; and a second synthetic section for synthesizing the other of the two divided third signals and the second audio signal into a second synthetic signal to output to the second loudspeaker, wherein the input section inputs the first audio signal, the second audio signal, and the third audio signal independent of each other, wherein said dividing section sets the phase difference of the one of the two divided third signals and the other of the two divided third signals to 180 degrees at maximum in the one frequency range, which is from 200 Hz to 2 kHz, and adjusts the phase difference from 180 degree at maximum to 0 degrees toward frequencies of 200 Hz and 2 kHz.