MixMasterAIAudio Cutter
Drag a region on the waveform — that region gets removed, and the audio before and after it gets joined. Different from the Audio Trimmer, which keeps the region and discards the rest. Use this to edit out coughs, sneezes, mistakes, or sections you don't want in the final file.
How it works
Drop the file
wavesurfer.js renders the waveform; the file decodes locally for preview.
Up to 200 MB
Select what to remove
Drag the highlighted region edges to mark the unwanted section. Or type exact start/end timestamps. Listen back before processing.
Resolution: 0.01s in numeric inputs
Cut
Web Audio removes samples between start and end, splices the remaining audio into one continuous file. Length = source - (end - start).
Output: 16-bit WAV at source sample rate
Frequently asked questions
How is this different from the Audio Trimmer?
Trimmer keeps the selected region. Cutter removes the selected region and joins the parts before and after. If your goal is to extract a 30-second hook from a 4-minute song, use Trimmer. If your goal is to remove a 2-second cough from a 4-minute interview, use Cutter.
Will the cut sound seamless?
Depends on what's in the audio at the cut points. If the audio before and after the removed region matches in level and content (e.g., both are room tone, both are silent, both are similar voice cadence), the join sounds seamless. If there's a hard transition (loud word ends, instrument hits start), you may hear a click or unnatural jump. For sensitive cuts, work in a DAW with crossfade-aware editing.
Can I cut multiple sections?
Not in one pass. Run the cutter, download the result, drop it back in, cut again. For complex multi-edit projects, split the file with the Audio Splitter into clean clips and reassemble with the Audio Merger.
What about preserving timestamps for later sections?
Time after the cut shifts. If a section was at 1:30 in the original and you remove a 5-second region before it, that section is now at 1:25. Keep this in mind if you're synchronizing cuts to a video or external timestamps.