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Voice acquisition device

A technology of voice collection and metal casing, which is applied to the throat mounting parts of microphones, sensors, electrical components, etc., and can solve problems such as technical implementation difficulties

Inactive Publication Date: 2009-10-28
北京开摩微电技术中心
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Problems solved by technology

However, since the vibration amplitude of the jaw is much smaller than that of the larynx, there are certain difficulties in technical implementation, and it has been difficult to achieve

Method used

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  • Voice acquisition device

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] Such as figure 1 As shown, the voice collection device of the present invention is sandwiched by a concave metal shell 1 and a shell cover 6 to form a cavity. A metal substrate 3 is arranged in the cavity, and the metal substrate 3 is a thin metal sheet, and its preferred material should be copper. A support pillar 2 is provided on the edge of the metal substrate 3 facing the bottom surface of the metal shell 1 . The metal substrate 3 is fixed on the bottom surface of the metal casing 1 through the pillar 2, and forms a certain distance from the bottom surface. A piezoelectric sheet 4 is provided on the side of the metal substrate 3 facing away from the bottom surface of the metal casing 1 . The piezoelectric sheet 4 is a thin sheet made of piezoelectric material, which can convert the kinetic energy generated by the vibration into an audio el...

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Abstract

The invention provides a voice acquisition device. The voice acquisition device has a structure that a concave metal shell and shell cover are arranged in a clamping way to form a cavity; a metal substrate is arranged in the cavity; a metal brace is arranged on the edge of the side of the metal substrate, which faces to the metal shell; the metal substrate is fixed on the metal shell through the brace; a piezoelectric patch is arranged at the side of the metal substrate, which is back to the metal shell; a silver coating is attached on the upper side of the piezoelectric patch; the silver coating is a signal output end, and the metal shell is a public end. Voice acquisition by utilizing the vibration of jaw bone is realized through such a structural design.

Description

technical field [0001] The invention relates to a voice collection device, in particular to a voice collection device capable of generating audio electrical signals by collecting jaw vibrations when people speak. Background technique [0002] At present, the most common voice collection device is a microphone. It uses air as the medium of transmission, and realizes voice collection by collecting air vibration waves of voice. Although this voice collection method can obtain good sound quality, its biggest disadvantage is that it cannot shield the noise of the background environment, especially in a noisy environment, it is difficult to collect effective voice signals purposefully. [0003] In response to the above problems, people have invented a voice collection method that directly collects throat vibrations. For example, such a throat vibration type hands-free mobile phone microphone is disclosed in Chinese patent ZL 00235873.5. It collects the vibration generated by th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R17/00H04R1/14
Inventor 梁群
Owner 北京开摩微电技术中心
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