Area-sound reproduction system and area-sound reproduction method
First Claim
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1. An area-sound reproduction system, comprising:
- a speaker array including a plurality of speakers linearly arranged side by side;
a sound collector configured to collect an environment sound in an environment where the area-sound reproduction system is installed;
a processor; and
a memory having a computer program stored thereon, the computer program causing the processor to execute operations, includingadjusting signals that the plurality of speakers are caused to output as reproduced sounds according to a reproduction condition on a control line, wherein the control line includes(i) a reproduction line in which sound waves emitted from the speaker array have constructive interference with each other, and(ii) a non-reproduction line in which the sound waves have destructive interference with each other,the reproduction line and the non-reproduction line being set at a position substantially in parallel with the speaker array and apart from the speaker array by a predetermined distance, andcausing the plurality of speakers to output the reproduced sounds,wherein the adjusting further includesdetermining a noise level from the collected environment sound, andadjusting signals to be output as the reproduced sounds, such that at each frequency,a sound pressure of the reproduced sound reaching the reproduction line on the control line exceeds the noise level, anda sound pressure of the reproduced sound reaching the non-reproduction line on the control line does not exceed the noise level.
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Abstract
An area-sound reproduction system includes a speaker array in which a plurality of speakers are linearly arranged side by side, a sound collector that collects an environment sound in an environment where the area-sound reproduction system is installed, and a processor that adjusts reproduced sounds that the plurality of speakers are caused to output, based on a control line, and causes the area-sound reproduction system to output the reproduced sounds, the control line being set at a position substantially in parallel with the speaker array and apart from the speaker array by a predetermined distance, and including a reproduction line in which sound waves emitted from the speaker array constructively interfere with each other and a non-reproduction line in which the sound waves destructively interfere with each other, in which the processor measures a noise level from the collected environment sound, and adjusts the reproduced sounds, at each frequency, such that a sound pressure of the reproduced sound reaching the reproduction line on the control line exceeds the noise level, and a sound pressure of the reproduced sound reaching the non-reproduction line on the control line does not exceed the noise level.
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Citations
10 Claims
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1. An area-sound reproduction system, comprising:
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a speaker array including a plurality of speakers linearly arranged side by side; a sound collector configured to collect an environment sound in an environment where the area-sound reproduction system is installed; a processor; and a memory having a computer program stored thereon, the computer program causing the processor to execute operations, including adjusting signals that the plurality of speakers are caused to output as reproduced sounds according to a reproduction condition on a control line, wherein the control line includes (i) a reproduction line in which sound waves emitted from the speaker array have constructive interference with each other, and (ii) a non-reproduction line in which the sound waves have destructive interference with each other, the reproduction line and the non-reproduction line being set at a position substantially in parallel with the speaker array and apart from the speaker array by a predetermined distance, and causing the plurality of speakers to output the reproduced sounds, wherein the adjusting further includes determining a noise level from the collected environment sound, and adjusting signals to be output as the reproduced sounds, such that at each frequency, a sound pressure of the reproduced sound reaching the reproduction line on the control line exceeds the noise level, and a sound pressure of the reproduced sound reaching the non-reproduction line on the control line does not exceed the noise level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An area-sound reproduction method of an area-sound reproduction system including a speaker array including a plurality of speakers linearly arranged side by side, the area-sound reproduction method comprising:
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collecting an environment sound in an environment where the area-sound reproduction system is installed; adjusting signals that the plurality of speakers are caused to output as reproduced sounds accordingly to a reproduction condition on a control line, wherein the control line includes (i) a reproduction line in which sound waves emitted from the speaker array have constructive interference with each other, and (ii) a non-reproduction line in which the sound waves have destructive interference with each other, the reproduction line and the non-reproduction line being set at a position substantially in parallel with the speaker array and apart from the speaker array by a predetermined distance; and causing the plurality of speakers to output the reproduced sounds, wherein the adjusting further includes determining a noise level from the collected environment sound, and adjusting signal to be output as the reproduced sounds, such that at each frequency, a sound pressure of the reproduced sound reaching the reproduction line on the control line exceeds the noise level, and a sound pressure of the reproduced sound reaching the non-reproduction line on the control line does not exceed the noise level.
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Specification
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Current AssigneePanasonic Intellectual Property Corporation of America (Panasonic Holdings Corporation)
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Original AssigneePanasonic Intellectual Property Corporation of America (Panasonic Holdings Corporation)
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InventorsSakaguchi, Atsushi
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Primary Examiner(s)Bernardi, Brenda
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Application NumberUS15/245,264Publication NumberTime in Patent Office377 DaysField of SearchUS Class CurrentCPC Class CodesG10K 11/17821 characterised by the analys...G10K 11/17857 Geometric disposition, e.g....G10K 11/17873 using a reference signal wi...G10K 2210/3011 Single acoustic inputG10K 2210/3028 Filtering, e.g. Kalman filt...H04R 1/403 loud-speakersH04R 2201/403 Linear arrays of transducersH04R 2430/25 Array processing for suppre...H04R 29/002 Loudspeaker arraysH04R 3/04 for correcting frequency re...H04S 7/302 Electronic adaptation of st...
