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Acoustic apparatus and oscillating unit

A technology of audio equipment and control unit, which is applied to sub-office equipment, loudspeakers, electrical components, etc., and can solve problems such as the limitation of thickness reduction of electroacoustic transducers

Inactive Publication Date: 2013-03-27
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, electroacoustic transducers have limitations in thickness reduction due to their working principle and structure

Method used

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  • Acoustic apparatus and oscillating unit
  • Acoustic apparatus and oscillating unit
  • Acoustic apparatus and oscillating unit

Examples

Experimental program
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Embodiment Construction

[0025] will refer to Figure 1 to Figure 5 Embodiments of the present invention are described. like figure 1 As shown, the mobile phone 100 as the audio equipment of this embodiment includes: a directional speaker unit 110; a plurality of microphones 121 and 122, which input the user's voice into the microphone; The input results of 121 and 122 are used to at least detect the speaking position of the user to control the output direction of the voice output of the speaker unit 110 .

[0026] More specifically, as figure 2 As shown, in the mobile phone 100 of the present embodiment, the display unit 102 is provided in the upper half of the front surface of the longitudinal body housing 101, and the keypad unit 103 is provided in the lower half.

[0027] In addition, microphones 121 and 122 are provided on the left and right sides of the lower end of the casing, respectively. The speaker unit 140 is disposed in the middle of the upper end of the casing 101 . The speaker uni...

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PUM

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Abstract

In the present disclosures, a portable telephone (100) detects at least the direction of the position of vocalization of a user from the sound input to a plurality of microphones (121, 122), and controls the direction of sound output of a speaker unit (110) towards the detected position of vocalization. As a result, it is possible to provide a sufficient volume of sound to only a particular user without generating noise in the periphery. The microphones may form a matrix with piezoelectric oscillating elements that configure the speaker unit, or may be separate from the speaker unit.

Description

technical field [0001] The present invention relates to an audio device, such as a mobile phone, in particular to an audio device including a microphone and a loudspeaker unit and an oscillation unit thereof. Background technique [0002] In recent years, the demand for portable electronic devices such as mobile phones or notebook computers has gradually increased. Among these electronic devices, the commercial value of a video phone or a video-reproduced sound function of a slim mobile terminal, an automatic phone, etc. having commercial value has been developed. During these developments, there has been an increasing demand for high-quality sound and reduction in size and thickness of electroacoustic transducers (speaker devices) as audio components. [0003] Currently, electrodynamic electroacoustic transducers are used as electroacoustic transducers in electronic devices such as mobile phones. The electroacoustic transducer is configured to include a permanent magnet, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R17/00H04M1/00H04R1/40H04R3/00
CPCH04M1/6008H04M1/6016H04R2307/027H04R2430/23H04R17/10H04R1/403H04R2217/03H04R1/32H04R2400/01H04R2499/11
Inventor 岸波雄一郎大西康晴菰田元喜村田行雄黑田淳佐藤重夫
Owner NEC CORP
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