SOUND EMISSION AND COLLECTION DEVICE

Title:

SOUND EMISSION AND COLLECTION DEVICE

Document Type and Number:

WIPO Patent Application WO/2007/072757

Kind Code:

A1

Abstract:

It is possible to provide a sound emission and collection device having a compact configuration and capable of suppressing sound coming from a speaker to a microphone and improving the S/N ratio. In the sound emission and collection device, a plurality of speakers (11) have a sound emission surface arranged at the side surface of a case (1) so that a sound can be emitted in all the circumferential direction of the sound emission and collection device. Each of the microphones (12) is arranged with the sound collection direction set in the center direction of the case (1). The microphone (12) and the speaker (11) have directivities opposing to each other. Accordingly, it is possible to minimize the sound coming from the speaker (11) to the microphone (12). Moreover, since the speaker (11) and the microphone (12) are arranged on coaxial circumferences, it is possible to obtain a compact configuration.

Inventors:

ISHIBASHI TOSHIAKI (JP)
SAITO KOSUKE (JP)

Application Number:

PCT/JP2006/325063

Publication Date:

June 28, 2007

Filing Date:

December 15, 2006

Export Citation:

Click for automatic bibliography generation Help

Assignee:

YAMAHA CORP (JP)
ISHIBASHI TOSHIAKI (JP)
SAITO KOSUKE (JP)

International Classes:

H04R1/40; H04R3/00; H04R3/02

Foreign References:

JPS5856563A	1983-04-04
JPS5639667A	1981-04-15
JP2005065217A	2005-03-10
JPS6322702B2	1988-05-12
JPH02288455A	1990-11-28
JP2000253134A	2000-09-14

Other References: