语音广播扩声系统的啸叫处理方法和装置
By adjusting the amplitude of the howling frequency point using the spectral amplitude of the non-howling frequency point in the frequency domain, and combining it with a frequency domain howling energy detector with a low constant false detection rate, the distortion problem caused by howling detection in the voice broadcasting amplification system is solved, and howling suppression and system performance improvement are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- G NET INTEGRATED SERVICE
- Filing Date
- 2023-02-28
- Publication Date
- 2026-07-17
AI Technical Summary
In existing voice broadcasting and amplification systems, howling detection and notch filter processing cause severe distortion of the voice signal, and improper threshold parameter settings for multi-feature criteria affect system performance.
In the frequency domain, the geometric mean of the spectral amplitude at the non-feedback frequency point is used to replace the spectral amplitude at the feeding frequency point to suppress the feeding spectral components while keeping the phase unchanged. Combined with a frequency domain feeding energy detector with a low false detection rate, a feeding processing method and device for a voice broadcasting amplification system is designed.
It effectively suppresses howling, reduces algorithm processing complexity, avoids damage to normal speech signals, and improves the robustness and adaptability of the system.
Smart Images
Figure CN116312592B_ABST