A communication audio power amplifier noise reduction circuit
By designing audio threshold detection and noise suppression, dynamic response optimization, and power management units through hardware circuitry, the noise problem in intercom communication equipment is solved, achieving a communication audio power amplifier circuit with high efficiency noise reduction and low power consumption.
CN224555585UActive Publication Date: 2026-07-24UNIV OF ELECTRONIC SCI & TECH OF CHINA CHENGDU COLLEGE
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Patent Information
- Authority / Receiving Office
- CN ¡ China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- UNIV OF ELECTRONIC SCI & TECH OF CHINA CHENGDU COLLEGE
- Filing Date
- 2025-06-04
- Publication Date
- 2026-07-24
AI Technical Summary
Technical Problem
In existing intercom communication equipment, the power amplifier circuit often suffers from noise problems, which affect communication quality. Existing solutions are difficult to implement and costly.
Method used
By employing an audio threshold detection and noise suppression unit, a dynamic response optimization unit, an anti-false triggering unit, and a power management unit, combined with hardware circuit design, precise noise suppression and power management are achieved.
Benefits of technology
It effectively eliminates low-frequency and ultra-high-frequency noise in the environment, ensures the integrity of the first character of the voice message, reduces standby power consumption, and improves communication quality.
⌠Generated by Eureka AI based on patent content.
Smart Images
Figure CN224555585U_ABST
Abstract
The utility model discloses a communication audio power amplifier noise reduction circuit, and this circuit eliminates environmental low frequency noise through audio threshold detection and noise suppression unit, and the effective human voice frequency band is accurately extracted, and ultrahigh frequency noise is absorbed, through dynamic response optimization unit, the button blasting sound is eliminated, and the speech first letter integrity is guaranteed, through the anti -error trigger unit realizes that the hard limiting of plus or minus 0.7V, constructs two -way voltage clamping and prevents strong interference signal and leads to error trigger, through the power consumption management unit, the power amplifier chip is pulled down to the ground when there is no audio signal, and the standby power consumption of circuit is reduced, through the audio playback unit, the power amplifier control is carried out according to the SPK EN signal outputted by the anti -error trigger unit, and the power amplifier of audio signal is realized and plays. The utility model discloses simple structure, and effective noise reduction is realized through hardware circuit, and the communication quality is improved.
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