Patent ID: 8208648
Filing Date: 2012-06-26
Classification: H04S

Abstract:
1. A sound field reproducing apparatus comprising: a signal obtaining unit which obtains input audio signals of plural channels; a correlation degree detecting unit which detects a correlation degree of reverberation component between the input audio signals; an effect adding unit which gives an effect on an output to a sound field; and an effect amount control unit which controls an amount of the effect based on the correlation degree of reverberation component, wherein the correlation degree detecting unit calculates, while changing a delay time within a predetermined range, the correlation degree between a delay signal obtained by delaying the input audio signal of one of the plural channels by the delay time, and the input audio signal of another one of the plural channels, and determines a maximum value of the correlation degrees corresponding to each delay time changed within the range as the correlation degree of reverberation component.