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Loudspeaker control method and device

A control method and technology of a control device, which are applied in the field of communication, can solve problems such as poor audio signal quality of speakers, and achieve the effects of improving user experience, improving audio signal quality, and ensuring safe work.

Active Publication Date: 2017-06-09
SPREADTRUM COMM (SHANGHAI) CO LTD
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Problems solved by technology

[0003] However, in this loudspeaker control method, the power of the loudspeaker output signal is always operated below the rated power. Since the rated power is small and most of the audio signals below the resonance frequency are filtered out, the quality of the audio signal output by the loudspeaker is relatively low. Difference

Method used

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  • Loudspeaker control method and device

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Embodiment Construction

[0066] In order to solve the above-mentioned problems existing in the prior art, the technical solution adopted in the embodiment of the present invention controls the gain of the input signal at the current moment through the voltage signal and current signal fed back from both ends of the loudspeaker. When the rated power of the speaker is used, it can ensure the safe operation of the speaker, improve the output quality of the audio signal, and improve the user experience.

[0067] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and understandable, the following combination Attached picture Specific embodiments of the present invention are described in detail.

[0068] picture 1 shows the flow of a loudspeaker control method in the embodiment of the present invention picture . as shown in the picture 1 The loudspeaker control method shown may include:

[0069] Step S101: Obtain an input digital signal.

[...

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Abstract

The invention discloses a loudspeaker control method and a loudspeaker control device. The loudspeaker control method comprises the steps of: acquiring an input digital signal; filtering and buffering the input digital signal separately to obtain a buffer signal at the current moment; and adjusting gain of the buffer signal based on a voltage signal and a current signal at two ends of a loudspeaker at the current moment, so as to control structural performance parameters of the loudspeaker within a preset range. The loudspeaker control method and the loudspeaker control device can improve quality of audio signals output by the loudspeaker.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a speaker control method and device. Background technique [0002] The speaker is a transducer device that converts electrical signals into acoustic signals. The performance of the speaker has a great influence on the sound quality. Generally, when the power of the input signal is high, the speaker will generate nonlinear distortion or cause damage to the voice coil and diaphragm. In the prior art, the above situation is generally avoided by reducing the input signal power. [0003] However, in this loudspeaker control method, the power of the loudspeaker output signal is always operated below the rated power. Since the rated power is small and most of the audio signals below the resonance frequency are filtered out, the quality of the audio signal output by the loudspeaker is relatively low. Difference. Contents of the invention [0004] The technical problem solved ...

Claims

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Application Information

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IPC IPC(8): H04R3/04
Inventor 蒋斌纪伟吴晟林福辉
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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