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Nonlinear compensation method, device, storage medium and terminal device

A nonlinear compensation and coil technology, applied in the field of loudspeakers, can solve problems such as small size and sound distortion

Active Publication Date: 2020-07-21
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The size of the speaker in the mobile terminal is relatively small, and its nonlinearity is very significant, especially when playing a large signal, the sound of the tiny speaker in the mobile terminal will produce obvious distortion

Method used

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  • Nonlinear compensation method, device, storage medium and terminal device
  • Nonlinear compensation method, device, storage medium and terminal device
  • Nonlinear compensation method, device, storage medium and terminal device

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Embodiment Construction

[0020] The technical solution of the present application will be further described below in conjunction with the accompanying drawings and through specific implementation methods. It should be understood that the specific embodiments described here are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the convenience of description, only some structures related to the present application are shown in the drawings but not all structures.

[0021] Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe the steps as sequential processing, many of the steps may be performed in parallel, concurrently, or simultaneously. Additionally, the order of steps may be rearranged. The process may be terminated when its operations are complete, but may also hav...

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Abstract

The embodiment of the application provides a non-linear compensation method and device, a storage medium and terminal equipment. The method comprises the following steps: acquiring an excitation voltage and the state vectors of a loudspeaker, wherein the state vectors include coil current, coil induction current, vibrating diaphragm displacement and vibrating diaphragm speed; determining a compensation driving voltage and a predicted state vector according to the excitation voltage and the state vectors at the current moment, wherein the compensation driving voltage is used for compensating for the non-linear distortion of the loudspeaker, and driving the loudspeaker to work, and the predicted state vector is the state vector of the loudspeaker when the input is the compensation driving voltage; and using the predicted state vector as the state vector at the current moment, and returning the operation of acquiring the excitation voltage and the state vectors of the loudspeaker at the current moment. Through adoption of the technical scheme, the non-linear distortion of the loudspeaker can be compensated according to the state vectors of the loudspeaker.

Description

technical field [0001] The embodiments of the present application relate to the technical field of loudspeakers, and in particular, to a nonlinear compensation method, device, storage medium, and terminal equipment. Background technique [0002] With the rapid development of mobile terminals, the multimedia technology plays an increasingly important role in the mobile terminal, and the loudspeaker is an important part of using the multimedia technology. The size of the loudspeaker in the mobile terminal is relatively small, and its non-linearity is very significant, especially when playing a large signal, the sound of the tiny loudspeaker in the mobile terminal will produce obvious distortion. Therefore, it is very important to compensate the nonlinearity of the micro-speaker. Contents of the invention [0003] The embodiments of the present application provide a nonlinear compensation method, device, storage medium, and terminal equipment, which can perform nonlinear com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R9/04H04R9/06H04R1/22H04R3/00
CPCH04R1/22H04R3/00H04R9/04H04R9/06
Inventor 陈岩
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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