ACOUSTIC SIGNAL PROCESSING DEVICE, ACOUSTIC SIGNAL PROCESSING METHOD, AND PROGRAM

摘要

The present technology relates to an acoustic signal processing device, an acoustic signal processing method, and a program capable of improving a feeling of localization of a sound image at a position deviated leftward or rightward from a median plane of a listener. A transaural processing unit performs a predetermined transaural process for an input signal by using a sound source opposite side HRTF and a sound source side HRTF to generate a first acoustic signal, and a second acoustic signal containing attenuated components in a first band which is the lowest band, and a second band which is the second lowest band in a range of a predetermined first frequency or higher frequencies, in bands of appearance of notches in the sound source opposite side HRTF. A subsidiary signal synthesis unit adds a first subsidiary signal constituted by a component in a predetermined band of the second acoustic signal to the first acoustic signal to generate a third acoustic signal. The present technology is applicable to an AV amplifier, for example.

主权项

1. An acoustic signal processing device including:
a first transaural processing unit that performs a predetermined transaural process for a first input signal corresponding to an acoustic signal for a first virtual sound source deviated leftward or rightward from a median plane of a predetermined listening position, by using a first head acoustic transmission function between the first virtual sound source and one of both ears of a listener located at the listening position, which ear is located on a side away from the first virtual sound source, and by using a second head acoustic transmission function between the first virtual sound source and the other of the both ears of the listener, which ear is located on a side close to the first virtual sound source, to generate a first acoustic signal, and a second acoustic signal containing attenuated components in a first band which is the lowest band, and a second band which is the second lowest band in a range of a predetermined first frequency or higher frequencies, in bands of appearance of notches each of which corresponds to a negative peak of an amplitude having a predetermined depth or larger in the first head acoustic transmission function; and a first subsidiary signal synthesis unit that adds a first subsidiary signal constituted by a component in a predetermined band of the second acoustic signal to the first acoustic signal to generate a third acoustic signal.