Audio equipment and oscillation unit
AssigneeNEC Corporation
InventorsYuichiro Kishinami, Yasuharu Onishi, Motoyoshi Komoda, Yukio Murata, Jun Kuroda, Shigeo Satou
Life of this patent
Estimating the term…
Abstract
A mobile phone (100) detects at least a direction of an utterance position of a user from the voice input to a plurality of microphones (121,122) and controls an output direction of a voice out of a speaker unit (110) to match the detected utterance position. Accordingly, it is possible to provide sound with sufficient volume only for a specific user without causing noise in the neighborhood. The microphones may form a matrix together with piezoelectric vibrators that form a speaker unit, or may be formed separately from the speaker unit.
Claims4
Audio equipment comprising:
- a directional speaker unit;
- a plurality of microphones to which a voice of a user is input;
- and
- a directivity control unit that detects at least a direction of the user from an input result of the plurality of microphones and controls an output direction of a voice out of the directional speaker unit on the basis of the detection result,
- wherein each of the microphones has a first piezoelectric element and a first elastic member that supports the first piezoelectric element,
- wherein, in the directional speaker unit, a plurality of piezoelectric vibrators in which a second piezoelectric element is supported by a second elastic member is arrayed together with the microphones so as to form a matrix,
- wherein a first microphone among the microphones is disposed at a first corner among four corners of the matrix,
- wherein a second microphone among the microphones is disposed at a second corner among the four corners of the matrix, the second corner being a different corner from the first corner,
- wherein no microphone is disposed between the first corner and the second corner in the matrix, and
- wherein the piezoelectric vibrators are disposed between the first corner and the second corner in the matrix.
An oscillation unit comprising:
- a piezoelectric vibrator in which a first piezoelectric element is supported by a first elastic member;
- and
- a microphone in which a second piezoelectric element is supported by a second elastic member,
- wherein a plurality of the piezoelectric vibrators and a plurality of the microphones are disposed so as to form a matrix,
- wherein the oscillation unit further comprises a directivity control unit that detects at least a direction of a user from an input result of the plurality of the microphones and controls an output direction of a voice out of a directional speaker unit on the basis of the detection result,
- wherein a first microphone among the microphones is disposed at a first corner among four corners of the matrix,
- wherein a second microphone among the microphones is disposed at a second corner of the four corners of the matrix, the second corner being a different corner from the first corner,
- wherein no microphone is disposed between the first corner and the second corner in the matrix, and
- wherein the piezoelectric vibrators are disposed between the first corner and the second corner in the matrix.
Dependencies are inferred from the claim text.