How does silence-based splitting work?

The tool scans the decoded audio waveform and identifies regions where the amplitude stays below a configurable threshold for at least a minimum duration. It then splits the audio at the midpoint of each silent gap and produces separate WAV files for each segment.

What threshold should I use?

The threshold is a fraction of the peak amplitude (0 to 1). A value of 0.01 detects silence that is at least 40 dB quieter than the loudest sound. For recordings with background noise, increase the threshold to 0.02–0.05. For very clean recordings, 0.005 works well.

What is the minimum silence duration?

The minimum silence duration (in milliseconds) prevents short quiet moments (pauses between words, breath gaps) from being treated as split points. For splitting on sentence breaks in speech, 300–500 ms works well. For splitting songs in a recording, 1000–2000 ms is more appropriate.

What formats are supported?

Input: MP3, WAV, OGG, FLAC, AAC/M4A, WebM — any format your browser can decode. Output: individual WAV files (16-bit PCM) for each detected segment.

Is any audio uploaded during splitting?

No. The entire operation runs in your browser. The file is decoded into memory, the silence detection algorithm scans the samples locally, and each segment is encoded and offered as a download.

What if the tool finds too many or too few splits?

Adjust the threshold and minimum silence duration and try again. If too many splits: lower the threshold or increase the minimum silence duration. If too few: raise the threshold or decrease the minimum silence duration.

Can I download all segments at once?

Individual download links appear for each segment. Click each one to download. For bulk download, use your browser's "Save all" feature or consider a ZIP download (planned for a future update).

What is a good use case for audio splitting?

Common uses: splitting a vinyl rip into individual tracks, splitting a recorded interview at speaker transitions, dividing a lecture recording into topic sections, or splitting a batch of test recordings into individual samples.

Audio Splitter

Detect silence and automatically split one audio file into multiple clips. Supports MP3, WAV, OGG, FLAC, and M4A — all in your browser, no upload.

100% client-side · no upload

tool.split.label-audio-file

Load an audio file to begin.

How to split audio by silence

Choose your audio file. The tool loads and decodes it in your browser.
Adjust the silence threshold — lower values detect only very quiet gaps, higher values split on any quiet moment.
Set the minimum silence duration in milliseconds. Short pauses below this duration are ignored.
Click Detect & Split. The tool scans the waveform and lists detected segments.
Download each segment using the links provided.

Common use cases

Vinyl rip splitting: Automatically divide a full-side LP recording into individual tracks at the silence between songs.
Lecture segmenting: Split a long lecture recording at pauses between topics for easier navigation.
Interview curation: Divide a long interview at speaker transitions or question pauses.
Audio sample slicing: Split a batch recording of drum hits or voice samples into individual files for a sample library.
Podcast chapter export: Break a recorded podcast into chapter-sized WAV files before editing.

Related tools: Audio Trimmer · Audio Merger · Audio Fade · Volume Normalizer

常見問題

How does silence-based splitting work?: The tool scans the decoded audio waveform and identifies regions where the amplitude stays below a configurable threshold for at least a minimum duration. It then splits the audio at the midpoint of each silent gap and produces separate WAV files for each segment.
What threshold should I use?: The threshold is a fraction of the peak amplitude (0 to 1). A value of 0.01 detects silence that is at least 40 dB quieter than the loudest sound. For recordings with background noise, increase the threshold to 0.02–0.05. For very clean recordings, 0.005 works well.
What is the minimum silence duration?: The minimum silence duration (in milliseconds) prevents short quiet moments (pauses between words, breath gaps) from being treated as split points. For splitting on sentence breaks in speech, 300–500 ms works well. For splitting songs in a recording, 1000–2000 ms is more appropriate.
What formats are supported?: Input: MP3, WAV, OGG, FLAC, AAC/M4A, WebM — any format your browser can decode. Output: individual WAV files (16-bit PCM) for each detected segment.
Is any audio uploaded during splitting?: No. The entire operation runs in your browser. The file is decoded into memory, the silence detection algorithm scans the samples locally, and each segment is encoded and offered as a download.
What if the tool finds too many or too few splits?: Adjust the threshold and minimum silence duration and try again. If too many splits: lower the threshold or increase the minimum silence duration. If too few: raise the threshold or decrease the minimum silence duration.
Can I download all segments at once?: Individual download links appear for each segment. Click each one to download. For bulk download, use your browser's "Save all" feature or consider a ZIP download (planned for a future update).
What is a good use case for audio splitting?: Common uses: splitting a vinyl rip into individual tracks, splitting a recorded interview at speaker transitions, dividing a lecture recording into topic sections, or splitting a batch of test recordings into individual samples.

回報這個工具的問題