SOUND EMISSION AND COLLECTION DEVICE

摘要

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.