Silence Detector

About Silence Detector

This online silence detector analyzes your audio files to find and mark all silent or quiet regions. Perfect for cleaning up recordings, editing podcasts, finding pauses in speech, or preparing audio for further editing. Adjust the silence threshold and minimum duration to match your needs, then export the marker list for use in your DAW or audio editor.

What audio formats are supported?

All common audio formats are supported including MP3, WAV, OGG, AAC, M4A, FLAC, OPUS, and more.

What is silence threshold?

Silence threshold (in dB) determines what level is considered 'silent'. -60 dB is very quiet (catches almost all silence), -40 dB is moderate (standard), -20 dB is loud (only catches very quiet parts). Lower (more negative) values detect more silence.

What is minimum silence duration?

Minimum silence duration filters out very short silent moments. 0.1s catches brief pauses, 0.5s (recommended) catches normal pauses, 1s+ catches only longer silences. This prevents marking every tiny gap as silence.

How accurate is the detection?

Detection uses RMS (Root Mean Square) energy analysis with 512-sample hop size, providing accurate detection within ±10ms. The accuracy depends on your threshold settings - test different values to find what works for your audio.

What can I do with the marker list?

Export markers as a text file to: 1) Reference when manually editing, 2) Import into some DAWs as regions/markers, 3) Use as a guide for automated silence removal, 4) Document silence locations for quality control, 5) Copy to clipboard for quick access.

What does the timeline show?

The timeline visualization shows your entire audio file with green representing audio and red representing detected silence. This gives you a quick visual overview of where silence occurs and how it's distributed throughout your file.

Why would I want to detect silence?

Common uses: Cleaning up podcast recordings (find and remove long pauses), Preparing audio for editing (mark section breaks), Quality control (ensure no unwanted silence), Preparing audio for compression (identify gaps), Finding speech pauses (linguistic analysis), Detecting recording problems (dead air).

What settings should I use for podcasts?

For podcasts: Threshold -35 to -40 dB (catches normal pauses), Minimum duration 0.5-1.0s (ignores breathing pauses, catches editing gaps). For music: Threshold -45 to -50 dB (more sensitive), Minimum duration 0.2-0.5s (catches song gaps).

Can this automatically remove silence?

This tool detects and marks silence but doesn't remove it. Use the marker list with your audio editor or DAW to manually remove unwanted silence. For automatic removal, use our Silence Trimmer tool which removes silence from start/end.

What if I get too many or too few results?

Too many silence detections: Increase threshold (less negative, like -35 dB) or increase minimum duration (like 1.0s). Too few detections: Decrease threshold (more negative, like -50 dB) or decrease minimum duration (like 0.2s).

Can I use markers in my DAW?

Some DAWs support importing marker/region lists (check your DAW documentation). Otherwise, use the exported list as a reference to manually create markers at the specified timestamps in your DAW.

Is my audio file safe?

Absolutely! All audio analysis happens directly in your browser. Your audio file is never uploaded to any server. Everything stays private on your device.