AREA-SOUND REPRODUCTION SYSTEM AND AREA-SOUND REPRODUCTION METHOD

摘要

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.

主权项

1. An area-sound reproduction system comprising:
a speaker array comprising 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 reproduced sounds that the plurality of speakers are caused to output using 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 in the adjusting,
measuring a noise level from the collected environment sound, andadjusting the reproduced sounds, 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.