Patent ID: 7457421
Filing Date: 2008-11-25
Classification: H04S

Abstract:
1. A circuit for processing audio signals in a plurality of channels comprising a right channel, a left channel and a central channel, the circuit comprising: a frequency characteristics correction device for correcting frequency characteristics of an audio signal of the central channel, utilizing correction characteristics determined based on a head related transfer function to output a corrected signal; and a band-pass filter for extracting a predetermined frequency band from the corrected signal from the frequency characteristics correction device to output an extracted signals; a band eliminate filter for removing said predetermined frequency band from the corrected signal from the frequency characteristics correction device to output central channel audio signals; an output device for mixing said extracted signal with an audio signal of the right channel and an audio signal of the left channel to generate mixed output audio signals, and outputting said mixed output audio signals as a right channel output audio signal and a left channel output audio signal.