Patent ID: 8265301
Filing Date: 2012-09-11
Classification: G10L

Abstract:
1. An audio signal processing apparatus for an audio reproduction system, comprising: a first audio signal extracting section configured to extract a main audio signal from an input audio signal, wherein the main audio signal is representative of a first recorded localized source of sound in the input audio signal; a second audio signal extracting section configured to extract a sub audio signal from the input audio signal, wherein the sub audio signal is representative of sounds in the input audio signal from multiple sources other than the source of the main audio signal; a sense-of-depth controlling section configured to process the extracted main audio signal to control a sense of depth; a sense-of-depth volume adjustment controller configured to adjust a volume parameter of signals associated with the sense-of-depth controlling section; a sense-of-sound-expansion controlling section configured to process the extracted sub audio signal to vary a sense of spatial sound expansion when the sub audio signal is reproduced by the audio reproduction system; a sense-of-sound-expansion volume adjustment controller configured to adjust a volume parameter of signals associated with the sense-of-sound-expansion controlling section; a control signal generating section configured to generate a first control signal with which the sense-of-depth controlling section is controlled and a second control signal with which the sense-of-sound-expansion controlling section is controlled; and a mixing section configured to mix an output audio signal of the sense-of-depth controlling section and an output audio signal of the sense-of-sound-expansion controlling section, wherein the sense-of-depth volume adjustment section and the sense-of-sound-expansion volume adjustment section are configured to adjust the volume parameters of respective signals complementarily.