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pop noise suppression devices, power amplifiers and electronics

A power amplifier and noise suppression technology, applied in the field of audio signal processing, can solve problems such as signal path imbalance, POP noise, process parameter fluctuations, etc., and achieve the effect of reducing the possibility of output POP noise and reducing the size

Active Publication Date: 2021-11-02
SPREADTRUM COMM SHENZHEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The analog signal processing unit in the audio processing system, such as DAC and front-stage operational amplifier buffer unit, etc., will have fluctuations in process parameters in process implementation, resulting in signal path imbalance. If the offset signal is directly transmitted to the audio power amplifier, It is easy to cause POP noise (popping sound) to be output during audio playback, causing bad auditory effects and feelings to users

Method used

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  • pop noise suppression devices, power amplifiers and electronics
  • pop noise suppression devices, power amplifiers and electronics
  • pop noise suppression devices, power amplifiers and electronics

Examples

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Embodiment Construction

[0041] Various exemplary embodiments, features, and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0042] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.

[0043] The terminology used in the present invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used herein and in the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise...

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Abstract

The present disclosure relates to a POP noise suppressing device, a power amplifier and electronic equipment, which are applied in an audio power amplifier, and the POP noise suppressing device includes: at least one input terminal, which is used to receive an input signal; Corresponding to at least one first branch connected, the first branch includes a first resistor, and the output side of the first branch is used to output the processed signal; an adjustable resistance component, one end of which is connected to each of the The input side of the first branch is connected, and the other end is grounded, and the adjustable resistance component adjusts its resistance value correspondingly based on the received adjustment instruction, and the adjustment instruction is a gently changing digital signal or an analog signal. Embodiments of the present disclosure can suppress generation of POP noise.

Description

technical field [0001] The disclosure relates to the field of audio signal processing, in particular to a POP noise suppression device, a power amplifier and electronic equipment. Background technique [0002] The analog signal processing unit in the audio processing system, such as DAC and front-stage operational amplifier buffer unit, etc., will have fluctuations in process parameters in process implementation, resulting in signal path imbalance. If the offset signal is directly transmitted to the audio power amplifier, It is easy to cause POP noise (popping sound) to be output during audio playback, causing bad auditory effects and feelings to the user. Contents of the invention [0003] In view of this, the present disclosure proposes a POP noise suppressing device, a power amplifier and electronic equipment to solve the above technical problems and suppress the generation of POP noise. [0004] According to a first aspect of the present disclosure, a POP noise suppre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R3/00
CPCH04R3/00H04R2420/01
Inventor 鲁文先程剑平李孟璋
Owner SPREADTRUM COMM SHENZHEN CO LTD