Audio conference device

• US 8,855,286 B2
• Filed: 10/11/2013
• Issued: 10/07/2014
• Est. Priority Date: 10/27/2005
• Status: Active Grant

• Current Assignee: Yamaha Corporation
• Original Assignee: Yamaha Corporation
• Inventors: Ishibashi, Toshiaki, Kobayashi, Chikara, Suzuki, Kazumasa
• Primary Examiner(s): Vu, David
• Assistant Examiner(s): Han, Jonathan
• Application Number:
  US14/052,382
• Publication Number:
  US 20140037081A1
• Time in Patent Office: 361 Days
• Field of Search: 381/117, 381/307
• US Class Current: 379/202.01
• CPC Class Codes: H04M 1/6033 for providing handsfree use or a loudspeaker mode in telephone sets arrangements for preventing acoustic echo H04M9/08
• CPC Class Codes: H04M 3/56 Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities video conference systems H04N7/15
• CPC Class Codes: H04R 1/026 Supports for loudspeaker casings
• CPC Class Codes: H04R 1/345 for loudspeakers
• CPC Class Codes: H04R 1/403 loud-speakers
• CPC Class Codes: H04R 1/406 microphones
• CPC Class Codes: H04R 2201/403 Linear arrays of transducers
• CPC Class Codes: H04R 29/008 Visual indication of individual signal levels visual indication of stereophonic sound image H04S7/40

Abstract

An audio conference device receives and emits sounds to perform transmission/reception of audio signals via communications. The device has a speaker array with a plurality of speakers arranged on the lower surface of an elongated main housing, and a microphone array with a plurality of microphones arranged on the side surface of the main housing along the longitudinal direction. Legs are attached to the main body to support the main housing at a prescribed height above the resting surface and to secure good sound emission characteristics of the speaker array. The device further controls directivity of the microphones.

Claims

1. An audio conference device connectible to an external device via a network, the audio conference device comprising:

a main housing having an elongated rectangular parallelepiped shape;

a plurality of microphones linearly aligned along a longitudinal direction of the main housing;

a plurality of legs disposed at opposite ends of the main housing to support the main housing above a predetermined height from a surface on which the audio conference device rests; and

a connector that connects to the network;

wherein the audio conference device controls a plurality of signals output from the plurality of microphones to control directivity of the plurality of microphones and then transmits the plurality of signals to the external device via the connector.

2. The audio conference device according to claim 1, wherein the audio conference device controls sound reception directivity with respect to a plurality of regions to detect a position of a sound source based on sound reception levels of the plurality of regions.

3. The audio conference device according to claim 2, further comprising:

a lighting unit disposed on an upper face of the main housing, wherein the lighting unit includes a plurality of light-emitting members, which are turned on to emit light indicating the direction of the detected position of the sound source.

4. The audio conference device according to claim 2, wherein the plurality of microphones are spaced non-uniformly along the longitudinal direction of the main housing.

5. The audio conference device according to claim 4, wherein an operation control is arranged at an end portion on an upper surface of the main housing.

6. The audio conference device according to claim 5, wherein the operation control provides a mute function.

7. The audio conference device according to claim 1, further comprising:

a plurality of speakers; and

a control unit that performing directivity control of the plurality of microphones and the plurality of speakers,

wherein the control unit control directivity for each signal output from each microphone, and

wherein the control unit controls directivity of an external signal, which is input from the external device via the connector, and then supplies the external signal to each speaker.