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Voice Activity Detector
Analyze audio tracks to locate speech regions, remove dead silence, and optimize audio for transcription and TTS.
Key Features
Energy-Based Smart VAD
Scans 20ms frame energy with adaptive hysteresis thresholding to accurately detect speech vs pauses.
Speech Segment Visualizer
Interactive timeline clearly illustrates detected speech passages vs deleted silence sections.
Clickless Speech Stitching
Applies 30ms word-boundary padding to ensure word beginnings and endings are never cut off.
How to Use
1
Upload voice or podcast file
Select your recording, podcast, or interview in MP3, WAV, or M4A.
2
Adjust VAD sensitivity
Set energy threshold and minimum silence duration to trim.
3
Download clean speech audio
Preview the streamlined speech track and export WAV or MP3.
Online Voice Activity Detector (VAD) & Segmenter
Accurately detect human speech passages in audio recordings and isolate voice from silence effortlessly.
Key Features
High Accuracy
Detects speech frame-by-frame per 20ms.
Prepares Audio for AI
Optimizes voice recordings for Voice Cloning and transcription.
Saves Duration
Reduces 20% to 40% of dead audio duration.
100% Free
Unlimited free usage without restrictions.
How to Detect and Segment Voice
STEP 1
Upload audio: Select your podcast or interview file.
STEP 2
View speech timeline: Inspect the green timeline of detected speech.
STEP 3
Download audio: Save the trimmed speech file to your device.
Related Tools
Audio Silence Remover
Automatically detect and remove quiet pauses, dead air, and silent gaps from audio recordings — 100% free and in-browser.
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Audio Compressor & Dynamic Range Leveler
Level out loud volume peaks, thicken quiet speech, and give your podcasts and voiceovers studio punch.
Audio Noise Reducer & Denoiser
Remove background noise, fan hums, static hiss, and mic noise from audio recordings online — 100% free and in-browser.
Frequently Asked Questions
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