免费 · 无需安装
在线 AI 语音活动检测 (VAD) 剪切工具
利用先进的 VAD 语音检测算法自动切除非人声片段 — 精准提取说话干货，大幅精简录音时长。
核心功能
神经网络 VAD 检测
高精度识别人类语音，即使在嘈杂背景下也能精准判断。
自定义语前/语后缓冲
在每句话前后自动保留 100-200ms 缓冲，保证字头字尾完整。
一键快速导出
快速生成去除所有非人声片段的纯干货语音文件。
使用指南
1
上传访谈或会议录音
选择需要整理精简的长篇对白音频。
2
运行 VAD 智能分析
系统将自动标出所有包含人声的有效时间段。
3
导出纯语音文件
一键剔除非人声部分并下载精炼后的音频。
Free Smart Voice Activity Detection (VAD) & Speech Trimmer Online
YupVox Smart VAD Trimmer utilizes intelligent energy-based Voice Activity Detection and zero-crossing analysis to scan your audio files. It automatically isolates human speech passages and eliminates awkward pauses, long breaths, and dead silence from podcasts, interviews, and audiobooks in 0.05s.
Why Choose YupVox Smart VAD Trimmer?
Energy-Based Smart VAD Engine
Analyzes 20ms frame energy with adaptive hysteresis thresholding from -50dB to -25dB.
Speech Segment Visualizer
Color-coded visual timeline of detected speech passages vs deleted silence sections.
30ms Word Boundary Padding
Adds 30ms padding to speech boundaries to ensure word endings are never cut off.
100% In-Browser Privacy
Processed entirely in client RAM via Web Audio API with zero server uploads.
How to Smartly Trim Speech Silence in 3 Steps
STEP 1
Upload voice or podcast: Select your MP3, WAV, or M4A recording or podcast.
STEP 2
Adjust VAD sensitivity: Fine-tune energy threshold (e.g. -38dB) and minimum silence duration.
STEP 3
Download clean speech audio: Preview the trimmed speech and click Download WAV or MP3.
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