Loudspeaker cracking voice prevention method and device, and audio fequency device having the loudspeaker cracking voice prevention device

A loudspeaker and anti-broken sound technology, which is applied in the direction of sensors, transducer circuits, sensor components, etc., can solve problems such as ineffective prevention of broken sound, aging of equipment shells, and blockage of speaker ports, so as to improve the utilization of loudspeakers High efficiency, reliable performance, and the effect of preventing broken sound

Active Publication Date: 2017-01-04
BYD CO LTD
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Problems solved by technology

[0003] However, when the size of the sound cavity of the speaker changes, for example, the shell of the device is aged

Method used

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  • Loudspeaker cracking voice prevention method and device, and audio fequency device having the loudspeaker cracking voice prevention device
  • Loudspeaker cracking voice prevention method and device, and audio fequency device having the loudspeaker cracking voice prevention device
  • Loudspeaker cracking voice prevention method and device, and audio fequency device having the loudspeaker cracking voice prevention device

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[0017] The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

[0018] It should be noted that when the cavity size of the speaker changes, if the driving power of the speaker remains unchanged, the size of the sound produced by the speaker will change, and more importantly, the low-frequency resonance point (frequency or amplitude) of the speaker will change. For a specific speaker, the low frequency resonance point is determined by the size of the speaker cavity and the driving power. When a product speaker model is selected, the low frequency reson...

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Abstract

The invention discloses a loudspeaker cracking voice prevention method, wherein a loudspeaker is connected to an audio amplifier. The loudspeaker cracking voice prevention method comprises steps of collecting feedback information of the voice frequency amplifier, determining whether a size of a cavity of the loudspeaker is changed according to the feedback information and pre-stored data, if yes, obtaining needed output power needed by a voice frequency amplifier applicable to the size of the current cavity, and regulating the voice frequency amplifier according to the output power. The loudspeaker can effectively prevent cracking voice and protects the loudspeaker when the size of the cavity of the loudspeaker is changed. The invention also discloses a loudspeaker cracking voice prevention device and an audio frequency device having the same.

Description

technical field [0001] The invention belongs to the technical field of electronic equipment, and in particular relates to a loudspeaker anti-breaking sound method and anti-breaking sound device, as well as audio equipment provided with the sound breaking sound preventing device. Background technique [0002] In the traditional method, in order to avoid damage to the speaker, it is required to remove the bass frequency. For the initial evaluation and selection of the speaker project, the size of the sound cavity is set according to the maximum power value of the speaker, and the drive voltage of the circuit is set to prevent the speaker from breaking due to overpower, or, Adjust the output power of the speaker to prevent broken sound by controlling the volume with mechanical buttons. [0003] However, when the size of the sound cavity of the speaker changes, such as when the shell of the device is aged or damaged, or the port of the speaker is blocked, the traditional method ...

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Application Information

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IPC IPC(8): H04R3/00
Inventor 李坡
Owner BYD CO LTD
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