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US 10,945,075 B2Granted
Sound output control device, sound output control method and program
AssigneePioneer Corporation
InventorsYusuke Inoue, Nobuaki Tanoue
Life of this patent
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Abstract
In the sound output control device, the sound output units arranged at left and right front parts and left and right rear parts output sound. The delay unit gives a delay to the sounds outputted by the sound output units arranged at the left and right rear parts. The control unit determines a delay amount based on acoustic characteristic of the sounds outputted by the sound output units and collected at each of left and right front listening positions and left and right rear listening positions, and sets the determined delay amount to the delay unit.
Claims10
A sound output control device including:
- sound output units arranged at left and right front parts and left and right rear parts, each sound output unit configured to output sounds;
- a signal delay unit, the signal delay unit configured to give a first delay to the sounds outputted by the sound output units arranged at the left and right rear parts;
- a sound output control unit, the sound output control unit comprising a microphone configured to collect the outputted sounds at each of left and right front listening positions and left and right rear listening positions, the sound output control unit further configured to determine a delay amount based on an acoustic characteristic of the collected sounds outputted by the sound output units and then collected at each of the left and right front listening positions and the left and right rear listening positions, and set the first delay of the delay unit to the determined delay amount;
- and
- a frequency determination unit configured to determine a controlled frequency band based on a collection result of collecting the sounds outputted by the sound output units at the rear listening positions,
- wherein the sound output control unit determines the first delay based on the acoustic characteristic in the controlled frequency band, and
- wherein the frequency determination unit determines, as the controlled frequency band, the frequency band in which a phase characteristic of the sounds outputted from the sound output units arranged at the left and right front parts and the phase characteristic of the sounds outputted from the sound output units arranged at the left and right rear parts become reverse phases.
4 more elements
A sound output control method executed by a sound output control device including sound output units arranged at left and right front parts and left and right rear parts, each sound output unit configured to output sounds, the method including:
- a delay process to give a first delay to sounds outputted by the sound output units arranged at the left and right rear parts;
- a control process to collect the outputted sounds at each of left and right front listening positions and at left and right rear listening positions and then to determine a delay amount based on an acoustic characteristic of the collected sounds outputted by the sound output units and then collected at each of the left and right front listening positions and the left and right rear listening positions, and set the first delay in the delay process to the determined delay amount;
- and
- a frequency determination process to determine a controlled frequency band based on a collection result of collecting the sounds outputted by the sound output units at the rear listening positions,
- wherein the control process determines the first delay based on the acoustic characteristic in the controlled frequency band, and
- wherein the frequency determination process determines, as the controlled frequency band, the frequency band in which a phase characteristic of the sounds outputted from the sound output units arranged at the left and right front parts and the phase characteristic of the sounds outputted from the sound output units arranged at the left and right rear parts become reverse phases.
3 more elements
A non-transitory computer-readable medium storing a program executed by a sound output control device including:
- sound output units arranged at left and right front parts and left and right rear parts, each sound output unit configured to output sounds;
- and a computer, the program causing the computer to function as:
- a signal delay unit, the signal delay unit configured to give a first delay to the sounds outputted by the sound output units arranged at the left and right rear parts;
- a sound output control unit, the sound output control unit comprising a microphone configured to collect the outputted sounds at each of left and right front listening positions and left and right rear listening positions, the sound output control unit further configured to determine a delay amount based on an acoustic characteristic of the sounds outputted by the sound output units and then collected at each of the left and right front listening positions and the left and right rear listening positions, and set the first delay of the signal delay unit to the determined delay amount;
- and
- a frequency determination unit configured to determine a controlled frequency band based on a collection result of collecting the sounds outputted by the sound output units at the rear listening positions,
- wherein the sound output control unit determines the first delay based on the acoustic characteristic in the controlled frequency band, and
- wherein the frequency determination unit determines, as the controlled frequency band, the frequency band in which a phase characteristic of the sounds outputted from the sound output units arranged at the left and right front parts and the phase characteristic of the sounds outputted from the sound output units arranged at the left and right rear parts become reverse phases.
5 more elements
Dependencies are inferred from the claim text.