Reproduction apparatus, method and program for the same
View Patent ↗A reproduction apparatus that realizes reproduction of which sound leakage is small with use of a speaker installed near a head, and a method and a program thereof are provided. The reproduction apparatus is used in a seat. The reproduction apparatus includes: at least two speakers; an acquisition unit that acquires, from a predetermined sound source, an acoustic signal of which sound is emitted by the reproduction apparatus; and a control unit that controls the acoustic signal acquired by the acquisition unit such that reproduction sound is only transmitted to a first seat and the reproduction sound is not transmitted to a second seat, the speakers each emit sound of the acoustic signal controlled by the control unit, and the speakers are disposed so as to be closer to an ear of a user that sits in the first seat than to the second seat.
1. A reproduction apparatus used in a seat, the reproduction apparatus comprising:
at least two speakers; and
processing circuitry configured to:
execute an acquisition processing in which the processing circuitry acquires, from a predetermined sound source, an acoustic signal of which sound is emitted by the reproduction apparatus; and
execute a control processing in which the processing circuitry controls the acoustic signal acquired by the acquisition processing such that reproduction sound is only transmitted to a first seat and the reproduction sound is not transmitted to a second seat, wherein:
the speakers each emit sound of the acoustic signal controlled by the control processing,
the speakers are disposed so as to be closer to an ear of a user that sits in the first seat than to the second seat,
the speakers are disposed such that a position of either one of ears of the user that sits in the first seat and centers of the at least two speakers configuring the reproduction apparatus are arranged on one straight line forming a line segment,
said either one of ears of the user is located on the extension of the line segment connecting the centers of the two speakers, and
the two speakers are disposed so as to face the same direction as a direction that the user is facing, or to face a direction of either one of ears of the user, or to face an upper direction.
2. A reproduction method, implemented by a reproduction apparatus that includes at least two speakers and processing circuitry, the reproduction method being used in a seat, the reproduction method comprising:
an acquisition step in which the processing circuitry acquires, from a predetermined sound source, an acoustic signal of which sound is emitted by each of the speakers; and
a control step in which the processing circuitry controls the acoustic signal acquired in the acquisition step such that reproduction sound is only transmitted to a first seat and the reproduction sound is not transmitted to a second seat, wherein:
the speakers each emit sound of the acoustic signal controlled in the control step,
the speakers are disposed so as to be closer to an ear of a user that sits in the first seat than to the second seat,
the speakers are disposed such that a position of either one of ears of the user that sits in the first seat and centers of the at least two speakers configuring the reproduction apparatus are arranged on one straight line forming a line segment,
either one of ears of the user is located on the extension of the line segment connecting the centers of the two speakers, and
the two speakers are disposed so as to face the same direction as a direction that the user is facing, or to face a direction of either one of ears of the user, or to face an upper direction.
3. A non-transitory computer-readable recording medium having recorded thereon a program for causing a computer to function as a signal processing device, the computer outputting a signal after signal processing to each of at least two speakers, the program causing the computer to function as:
acquisition means for acquiring, from a predetermined sound source, an acoustic signal of which sound is emitted by each of the speakers; and
control means for controlling the acoustic signal acquired by the acquisition means such that reproduction sound is only transmitted to a first seat and the reproduction sound is not transmitted to a second seat, wherein:
the speakers each emit sound of the acoustic signal controlled by the control means,
the speakers are disposed so as to be closer to an ear of a user that sits in the first seat than to the second seat,
the speakers are disposed such that a position of either one of ears of the user that sits in the first seat and centers of the at least two speakers configuring the reproduction apparatus are arranged on one straight line forming a line segment,
either one of ears of the user is located on the extension of the line segment connecting the centers of the two speakers, and
the two speakers are disposed so as to face the same direction as a direction that the user is facing, or to face a direction of either one of ears of the user, or to face an upper direction.