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Audio signal processing method and apparatus, and terminal

An audio signal processing and audio signal technology, which is applied in the field of computer programs and can solve the problems of large sound quality damage of low-frequency signals.

Active Publication Date: 2019-02-12
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Because the existing technology attenuates the low-frequency signal as a whole, although the purpose of protecting the speaker can be achieved, the sound quality of the low-frequency signal is greatly damaged

Method used

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  • Audio signal processing method and apparatus, and terminal
  • Audio signal processing method and apparatus, and terminal
  • Audio signal processing method and apparatus, and terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0094] see figure 2 , which is a flowchart of an audio signal processing method provided in Embodiment 1 of the present application.

[0095] The audio signal processing method provided by this embodiment includes the following steps:

[0096] S101: Acquire an audio signal within a preset frequency range, where the audio signal includes at least two subband signals.

[0097] The audio signal processing method provided in this embodiment can be executed by a terminal, and the terminal can be a mobile phone, a tablet computer, a PDA (Personal Digital Assistant, personal digital assistant), a POS (Point of Sales, sales terminal), or a vehicle-mounted computer, etc. . The audio signal generated by the terminal can come from an application, such as a music APP, or from a user call, such as a user making a phone call, sending a WeChat voice, etc. These audio signals are original audio signals.

[0098] In this embodiment, an audio signal in a preset frequency range is first acqu...

Embodiment 2

[0162] see image 3 , which is a structural block diagram of an audio signal processing device provided in Embodiment 2 of the present application.

[0163] The audio signal processing device provided in this embodiment includes:

[0164] Audio signal acquisition unit 101, diaphragm sub-displacement acquisition unit 102, target gain acquisition unit 103, processing unit 104 and merging unit 105;

[0165] Wherein, the audio signal acquisition unit 101 is configured to acquire an audio signal within a preset frequency range, the audio signal includes at least two sub-band signals, and the frequency ranges corresponding to the at least two sub-band signals do not overlap;

[0166] The diaphragm sub-displacement acquisition unit 102 is configured to obtain respectively corresponding speaker diaphragm sub-displacements of the at least two sub-band signals;

[0167] The target gain acquisition unit 103 is configured to obtain the corresponding target gains of the at least two sub-...

Embodiment 3

[0188] see Figure 4 , which is a structural block diagram of a terminal provided in Embodiment 3 of the present application.

[0189] The mobile terminal includes: a radio frequency (Radio Frequency, RF) circuit 810, a memory 820, an input unit 830, a display unit 840, a sensor 850, an audio circuit 860, a WiFi module 870, a processor 880, and a power supply 890 and other components. Those skilled in the art can understand that, Figure 4 The structure of the mobile terminal shown in the above does not constitute a limitation to the mobile terminal, and may include more or less components than those shown in the illustration, or combine some components, or arrange different components.

[0190] Combine below Figure 4 A detailed introduction to each component of the mobile terminal:

[0191] RF circuitry 810 may be used to transmit or receive data;

[0192] The memory 820 can be used to store software programs and modules, and the processor 880 executes various functional...

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Abstract

The embodiment of the invention discloses an audio signal processing method and apparatus, and a terminal for meeting the demands of different attenuation levels of different sub-band signals. The method disclosed by the embodiment of the invention comprises the following steps: obtaining an audio signal within a preset frequency range, wherein the audio signal comprises at least two sub-band signals; respectively obtaining respective corresponding loudspeaker diaphragm sub-displacements of the at least two sub-band signals; obtaining respective corresponding target gains of the at least two sub-band signals according to a preset diaphragm displacement and the respective corresponding loudspeaker diaphragm sub-displacements; obtaining at least two processed sub-band signals according to the at least two sub-band signals and the respective corresponding target gains of the at least two sub-band signals, wherein the sum of the respective diaphragm sub-displacements of the at least two processed sub-band signals is less than or equal to the preset diaphragm displacement; and merging the at least two processed sub-band signals to form a processed audio signal.

Description

technical field [0001] The present application relates to the field of signal processing, in particular to a signal processing method, device, terminal, storage medium and computer program. Background technique [0002] As a tool for sound transmission, speakers are widely used in various fields, especially in the field of terminals, speakers are one of the essential components, so the protection of speakers is very important. An important part in the speaker is the diaphragm of the speaker. When the audio signal is played through the speaker, the diaphragm will deviate from the original position to varying degrees with the frequency of the audio signal, that is, vibrate. Moreover, the lower-frequency audio signal has a greater impact on the diaphragm displacement of the diaphragm than the high-frequency audio signal, and there is even the possibility of exceeding the maximum diaphragm displacement of the diaphragm. Once the displacement of the diaphragm exceeds its accepta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/00
CPCH04R3/00
Inventor 李贤胜赵翔宇董敏亚
Owner HUAWEI TECH CO LTD
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