Speaker device and audio signal processing method
First Claim
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1. A speaker apparatus comprising:
- an input portion to which audio signals of a plurality of channels are input;
a plurality of speakers;
at least one processor for executing stored instructions to;
delay the audio signals of the plurality of channels input to the input portion and distribute the delayed audio signals to the plurality of speakers so that the plurality of speakers output a plurality of sound beams, wherein the plurality of sound beams are directed toward at least one focus position; and
apply a filtering processing based on a head-related transfer function to at least one of the audio signals of the plurality of channels input to the input portion and inputs the processed audio signal to the plurality of speakers, andwherein at least a part of a virtual sound source, localized by the at least one of the audio signals of the plurality of channels to which the filtering processing based on the head-related transfer function is applied, overlaps at least a portion of the at least one focus position of the plurality of sound beams.
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Abstract
A speaker apparatus includes an input portion to which audio signals of a plurality of channels are input, a plurality of speakers, a directivity controlling portion that delays the audio signals of the plurality of channels input to the input portion and distributes the delayed audio signals to the plurality of speakers so that the plurality of speakers output a plurality of sound beams, and a localization adding portion that applies a filtering processing based on a head-related transfer function to at least one of the audio signals of the plurality of channels input to the input portion and inputs the processed audio signal to the plurality of speakers.
14 Citations
29 Claims
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1. A speaker apparatus comprising:
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an input portion to which audio signals of a plurality of channels are input; a plurality of speakers; at least one processor for executing stored instructions to; delay the audio signals of the plurality of channels input to the input portion and distribute the delayed audio signals to the plurality of speakers so that the plurality of speakers output a plurality of sound beams, wherein the plurality of sound beams are directed toward at least one focus position; and apply a filtering processing based on a head-related transfer function to at least one of the audio signals of the plurality of channels input to the input portion and inputs the processed audio signal to the plurality of speakers, and wherein at least a part of a virtual sound source, localized by the at least one of the audio signals of the plurality of channels to which the filtering processing based on the head-related transfer function is applied, overlaps at least a portion of the at least one focus position of the plurality of sound beams. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An audio signal processing method comprising:
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an input step of inputting audio signals of a plurality of channels; a directivity controlling step of delaying the audio signals of the plurality of channels input in the input step and distributing the delayed audio signals to the plurality of speakers so that a plurality of speakers output a plurality of sound beams, wherein the plurality of sound beams are directed toward at least one focus position; and a localization adding step of applying a filtering processing based on a head-related transfer function to at least one of the audio signals of the plurality of channels input in the input step and inputting the processed signal to the plurality of speakers, wherein at least a portion of a virtual sound source localized by the at least one of the audio signals of the plurality of channels to which the filtering processing based on the head-related transfer function is applied, overlaps at least a portion of the at least one focus position of the plurality of sound beams. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification