Sound processing apparatus

摘要

In a sound processing apparatus, a likelihood calculation unit calculates an in-region coefficient and an out-of-region coefficient indicating likelihood of generation of each frequency component of a sound signal inside and outside a target localization range, respectively, according to localization of each frequency component. A reverberation analysis unit calculates a reverberation index value according to the ratio of a reverberation component for each frequency component. A coefficient setting unit generates a process coefficient for suppressing or emphasizing a reverberation component generated inside or outside the target localization range, for each frequency component of the sound signal, on the basis of the in-region coefficient, the out-of-region coefficient and the reverberation index value. A signal processing unit applies the process coefficient of each frequency component to each frequency component of the sound signal.

主权项

1. A sound processing apparatus, comprising:
a localization analysis unit configured to calculate a localization of each frequency component of a sound signal; a likelihood calculation unit configured to calculate an in-region coefficient and an out-of-region coefficient on the basis of the localization of each frequency component of the sound signal, the in-region coefficient indicating likelihood of generation of each frequency component from a sound source within a given target localization range, the out-of-region coefficient indicating likelihood of generation of each frequency component from a sound source located outside the target localization range; a reverberation analysis unit configured to calculate a reverberation index value on the basis of the ratio of a reverberation component for each frequency component of the sound signal; a coefficient setting unit configured to generate a process coefficient for suppressing or emphasizing a reverberation component generated from a sound source within the target localization range or a reverberation component generated from a sound source located outside the target localization range, for each frequency component of the sound signal, on the basis of the in-region coefficient, the out-of-region coefficient and the reverberation index value; and a signal processing unit configured to apply the process coefficient of each frequency component to each frequency component of the sound signal.