Shorten dead air in audio, one reviewable gap at a time.
Remove extended quiet gaps from voiceovers, podcast interviews, lectures, and speech recordings without making your delivery sound robotic or breathless.
Shorten dead air in audio, one reviewable gap at a time.
Ready for a local audio or video file
Scanning speech & quiet pauses…
Reading media and computing RMS energy…
Pacing Preset
Speech cushionsFine-tune detection parameters
Balanced (~-38dB): Calibrated natural balance recommended for podcasts, YouTube videos, and dialogue.
Automatically removes silence before first speech and after last speech.
00:14.2 → 00:16.8 (2.6s gap)
1.6s quiet gap; keeps 0.32s breathing room.
0 silences found (0.0s dead air) · 0 will be cut, 0 kept
Studio DSP & Ambience Rack
Real-Time DSP1-Click Full Background Noise Removal
Removes 80Hz rumble, 50/60Hz hum, room hiss & mouth clicks
Fills shortened silence gaps with authentic room tone synthesized from your recording, eliminating unnatural "vacuum dropouts".
Subtitle Range Protection
Protect Intentional Sentences & Pauses
Importing your subtitle transcript locks dialogue boundaries so dramatic reflections and deliberate speech pauses inside sentences are never auto-cut.
Removes verbal hesitation sounds (um, uh, er, like) and repeated stutters.
A/V Dual-System Sync
Drift ConformerEdit Evidence & Provenance
Manifest v1.0Total Proposals
0
Active Cuts
0
Restored Pauses
0
Protected Lines
0
Structural Export Validation:
Media Preflight & Capabilities
Verified Export Options:
- ✔ 16-Bit PCM WAV: Uncompressed lossless master audio.
- ✔ Audacity Labels: Drag-and-drop label track for Audacity / Reaper.
- ✔ CSV Cue Sheet: Tabular marker list with exact timestamps.
- ✔ EDL / FCPXML: Timeline cut lists: EDL for Premiere & Resolve, FCPXML for Final Cut & Resolve.
- ✔ Evidence Manifest: JSON & CSV audit trail with a CRC-32 source checksum.
Episode Show Notes
Background Noise Remover
Multi-band spectral Wiener filtering & room rumble removal
Lossless 16-Bit Master Audio & Edit Ledger Export
Rendered locally in browser memory with 8ms anti-click micro-fades. Zero server upload.
Timeline files reference your media by file name only. Final Cut Pro, DaVinci Resolve or Premiere Pro will ask you to relink the clip to the original file.
Zero upload · 100% of processing runs locally via browser Web Audio. Zero uploads, zero telemetry, and complete NDA compliance.
Engineered for human speech rhythm
Why podcasters, video editors, and voice creators choose reviewable pacing and client-side intelligence over aggressive cloud noise gates.
Retained Speech Cushion
Natural mode preserves a 0.32s ambient pause around words, preventing clipped consonants and unnatural breathless delivery.
True-Peak Headroom Limiter
Hard -1.0 dBFS true-peak ceiling protects audio from inter-sample clipping and distortion across mobile speaker drivers.
Export clean media
Download your finished master audio as uncompressed 16-bit PCM WAV with 8ms anti-click crossfades, or export synchronized NLE edit decision lists (EDL/FCPXML) for video editing.
Review cuts & noise cleanup
Inspect detected dead air on the interactive waveform and audition audio noise reduction. Switch between Natural, Tight, and Fast presets or restore specific dialogue pauses with one click.
Connected finishing workflows
Explore companion utilities for dialogue cleanup, speech pacing, and mastering.
Engineering guides & deep-dive workflows
Explore the acoustic principles, 6-stage studio mastering chain, and vocal clarity best practices.
How to Remove Silence From Audio Without Making It Sound Rushed
Why zero-silence gates ruin speech cadence. Learn how a calibrated 0.32-second speech cushion preserves natural breath beats and phoneme decay.
Audacity Truncate Silence: Best Settings for Voice and Podcasts
Recommended Audacity Truncate Silence values for voice and podcasts, how to measure your threshold, Truncate vs Compress, and multitrack pitfalls.
Audio Silence Remover Settings: Threshold, Minimum Gap and Retained Pause Explained
Understand the three core silence controls: dB threshold, minimum gap trigger, and cushion duration with practical scenario tables and recommended presets.
Frequently asked questions
Everything you need to know about browser-local noise removal, silence trimming, and natural speech pacing.
How does AutoSilenceCut detect silence in audio files?+
AutoSilenceCut decodes the audio locally using the Web Audio API and runs a sliding window Root Mean Square (RMS) loudness analysis across 20ms audio frames. Gaps with volume beneath the calibrated noise floor that exceed the minimum duration threshold are identified as candidates for shortening.
Why is a retained pause cushion essential for spoken voice?+
Deleting 100% of the silence between words creates an unnatural, machine-gun vocal effect and clips subtle consonant releases (like "t", "p", or "k"). AutoSilenceCut leaves a configurable 0.32s ambient cushion around words so the speaker sounds energetic without sounding breathless.
What audio formats are supported for import and export?+
You can import MP3, WAV, M4A, AAC, FLAC, and OGG audio files up to 1 GB. Edited audio exports as studio-standard uncompressed 16-bit PCM WAV (44.1kHz / 48kHz) to preserve complete acoustic fidelity with zero re-compression degradation.
How does the tool prevent clicks and pops at cut boundaries?+
Every audio splice point applies an automatic 8ms equal-power cosine crossfade. This smooths waveform transitions at non-zero-crossings and eliminates audio clicks, pops, and abrupt ambient noise shifts.
Are my audio recordings uploaded to a server?+
No. All processing happens entirely within your web browser’s memory. Your audio files are never sent across the internet, ensuring full privacy for confidential interviews, client voiceovers, and unreleased content.