Patent ID: 8041046
Filing Date: 2011-10-18
Classification: G10K,H04R,H04S

Abstract:
1. A reverberation adjusting apparatus for adjusting a reverberation component of a sound source which is output from a speaker on the basis of a reverberation characteristic of a sound field space in which the sound source is amplified by a speaker, comprising: a first obtaining device which obtains a sound signal as the sound source; a generating device which generates a test signal used for analyzing a reverberation characteristic of the sound field space as the sound source; an output control device which amplifies at least one of the sound signal and the test signal and outputs the amplified signal from the speaker; a second obtaining device, when the test signal is amplified and the amplified signal is output from the speaker to the sound field space, which obtains an amplified sound signal indicative of amplified sound in a specific listening position in the sound field space; a recognizing device which recognizes an attenuation characteristic indicative of attenuation with time of the sound field space with respect to the intensity of sound in the listening position of the amplified sound signal on the basis of the obtained amplified sound signal; a calculating device which calculates reverberation time in the listening position of the amplified sound on the basis of the recognized attenuation characteristic; and an operating device used for setting target reverberation time in the amplified sound; an adjusting device which adjusts an attenuation characteristic of the test signal to be amplified and output to the speaker on the basis of the calculated reverberation time and the set target reverberation time, wherein the adjusting device which generates a reverberation component in at least one of the obtained sound signal and the generated test signal on the basis of rate of change indicative of the degree of change in the intensity level of attenuation characteristic corresponding to the reverberation time of the test signal one-to-one, and adjusts an attenuation characteristic of at least one of the sound signal and the test signal by adding the generated reverberation component to the original signal from which the reverberation component is generated so that the reverberation time in the listening position is equal to the set target reverberation time.