US 2018/0007485 A1 · ACOUSTIC SIGNAL PROCESSING APPARATUS, ACOUSTIC SIGNAL PROCESSING METHOD, AND PROGRAM

Abstract

The present technology relates to an acoustic signal processing apparatus, an acoustic signal processing method, and a program for expanding a range of listening positions in which an effect of a transaural reproduction system can be obtained. First and second output signals for localizing a sound image in front of or behind and on the left of a first position located on the left of a listening position are output from first and second speakers, respectively. Third and fourth output signals for localizing a sound image in front of or behind and on the right of a second position located on the right of the listening position are output from third and fourth speakers, respectively. The first speaker is disposed in a first direction in front of or behind the listening position and on the left of the listening position. The second speaker is disposed in the first direction and on the right of the listening position. The third speaker is disposed in the first direction and on the left of the listening position and on the right of the first speaker. The fourth speaker is disposed in the first direction of the listening position and on the right of the second speaker. The present technology can be applied, for example, to an acoustic processing system.

Claims20

Dependent claims

An acoustic signal processing apparatus, comprising

a transaural processing unit configured to generate a first output signal for a left side speaker and a second output signal for a right side speaker by carrying out transaural processing on a first acoustic signal, the transaural processing including localizing a sound image from a first speaker disposed in a first direction in front of or behind the listening position and on the left of the listening position, and a sound image from a second speaker disposed in the first direction and on the right of the listening position, with respect to a first position located on the left of a predetermined listening position, in a second direction in front of or behind the first position and on the left of the first position,
the transaural processing unit configured to generate a third output signal for a left side speaker and a fourth output signal for a right side speaker by carrying out transaural processing on a second acoustic signal, the transaural processing including localizing a sound image from the third speaker disposed in the first direction and on the left of the listening position and disposed on the right of the first speaker, and a sound image from a fourth speaker disposed in the first direction of the listening position and on the right of the second speaker, with respect to a second position located on the right of the listening position, in a third direction in front of or behind the second position and on the right of the second position;
and
an output control unit configured to output the first output signal to the first speaker, output the second output signal to the second speaker, output the third output signal to the third speaker, and output the fourth output signal to the fourth speaker.

1 more element

An acoustic signal processing apparatus, comprising

a transaural processing unit configured to generate a first output signal for a left side speaker and a second output signal for a right side speaker by carrying out transaural processing on a first acoustic signal, the transaural processing including localizing a sound image from a first speaker disposed in a first direction in front of or behind the listening position and on the left of the listening position, and a sound image from a second speaker disposed in the first direction and on the right of the listening position, with respect to a first position located on the left of a predetermined listening position, in a second direction in front of or behind the first position and on the left of the first position,
the transaural processing unit configured to generate a third output signal for a left side speaker and a fourth output signal for a right side speaker by carrying out transaural processing on a second acoustic signal, the transaural processing including localizing a sound image from the third speaker disposed in the first direction and on the left of the listening position and disposed on the right of the first speaker, and a sound image from a fourth speaker disposed in the first direction of the listening position and on the right of the second speaker, with respect to a second position located on the right of the listening position, in a third direction in front of or behind the second position and on the right of the second position, and
an output control unit configured to output the first output signal to the first speaker, output a mixed signal of the second output signal and the third output signal to the second speaker, and output the fourth output signal to the third speaker.

An acoustic signal processing apparatus, comprising

a first speaker disposed in a first direction in front of or behind a predetermined listening position and on the left of the listening position,
a second speaker disposed in the first direction and on the right of the listening position,
a third speaker disposed in the first direction and on the left of the listening position, and on the right of the first speaker, and
a fourth speaker disposed in the first direction of the listening position and on the right of the second speaker, wherein
the acoustic signal processing apparatus
generates a first output signal for a left side speaker and a second output signal for a right side speaker by carrying out transaural processing on a first acoustic signal, the transaural processing including localizing a sound image from sound from the first speaker and the second speaker, with respect to a first position located on the left of the listening position, in a second direction in front of or behind the first position and on the left of the first position, and outputs sound in accordance with the first output signal from the first speaker among the first output signal for the left side speaker and the second output signal for the right side speaker,
outputs sound in accordance with the second output signal from the second speaker,
generates a third output signal for a left side speaker and a fourth output signal for a right side speaker generated by carrying out transaural processing on a second acoustic signal, the transaural processing localizing a sound image from sound from the third speaker and the fourth speaker, with respect to a second position located on the right of the listening position, in a third direction in front of or behind the second position and on the right of the second position, and outputs sound in accordance with the third output signal from the third speaker among the third output signal for the left side speaker and the fourth output signal for the right side speaker, and
outputs sound in accordance with the fourth output signal from the fourth speaker.

6 more elements

An acoustic signal processing method, comprising

disposing a first speaker in a first direction in front of or behind a predetermined listening position and on the left of the listening position,
disposing a second speaker in the first direction and on the right of the listening position,
disposing a third speaker in the first direction and on the left of the listening position, and on the right of the first speaker, and
disposing a fourth speaker in the first direction of the listening position and on the right of the second speaker,
generating a first output signal for a left side speaker and a second output signal for a right side speaker by carrying out transaural processing on a first acoustic signal, the transaural processing including localizing a sound image from sound from the first speaker and the second speaker, with respect to a first position located on the left of the listening position, in a second direction in front of or behind the first position and on the left of the first position, and outputting sound in accordance with the first output signal from the first speaker among the first output signal for the left side speaker and the second output signal for the right side speaker,
outputting sound in accordance with the second output signal from the second speaker,
generating a third output signal for a left side speaker and a fourth output signal for a right side speaker generated by carrying out transaural processing on a second acoustic signal, the transaural processing localizing a sound image from sound from the third speaker and the fourth speaker, with respect to a second position located on the right of the listening position, in a third direction in front of or behind the second position and on the right of the second position, and outputting sound in accordance with the third output signal from the third speaker among the third output signal for the left side speaker and the fourth output signal for the right side speaker, and outputting sound in accordance with the fourth output signal from the fourth speaker.

4 more elements

An acoustic signal processing apparatus, comprising

a first speaker disposed in a first direction in front of or behind a predetermined listening position and on the left of the listening position,
a second speaker disposed in the first direction of the listening position and substantially in front of or substantially behind the listening position, and
a third speaker disposed in the first direction and on the right of the listening position, wherein
the acoustic signal processing apparatus
generates a first output signal for a left side speaker and a second output signal for a right side speaker by carrying out transaural processing on a first acoustic signal, the transaural processing including localizing a sound image from sound from the first speaker and the second speaker, with respect to a first position located on the left of the listening position, in a second direction in front of or behind the first position and on the left of the first position, and outputs sound in accordance with the first output signal from the first speaker among the first output signal for the left side speaker and the second output signal for the right side speaker,
generates a third output signal for a left side speaker and a fourth output signal for a right side speaker generated by carrying out transaural processing on a second acoustic signal, the transaural processing localizing a sound image from sound from the second speaker and the third speaker, with respect to a second position located on the right of the listening position, in a third direction in front of or behind the second position and on the right of the second position, and outputs sound in accordance with the fourth output signal from the third speaker among the third output signal for the left side speaker and the fourth output signal for the right side speaker, and
outputs sound in accordance with a mixed signal of the second output signal and the third output signal from the second speaker.

4 more elements

Dependencies are inferred from the claim text.

Acoustic signal processing apparatus, acoustic signal processing method, and program

Life of this patent

Acoustic signal processing apparatus, acoustic signal processing method, and program

Life of this patent

Abstract

Claims20