Audio Interview Segment Chopper — Free Local Cut & WAV Export

This tool cuts a segment from an interview recording and exports it as a WAV file, entirely in your browser. You choose an audio file, set start and end times in seconds, and the tool decodes the audio with the Web Audio API, slices the samples, encodes a standard 16-bit WAV, and offers it for download. Nothing uploads: the file never leaves your computer, which matters for interview recordings that may contain sensitive personal stories. The WAV format is uncompressed, so the segment imports cleanly into transcription tools, qualitative analysis software, and audio editors without codec surprises.

How to use it

Choose an audio file from your computer.
Enter the start and end times in seconds.
Click Cut segment & download WAV.
Wait for decoding, then download segment.wav.
Import the WAV into your transcription or analysis tool.

Worked example

An interview runs 45 minutes, and the passage about first-day experiences sits between 12:30 (750 seconds) and 14:05 (845 seconds). Entering 750 and 845 cuts exactly that passage into a small WAV file, which you attach to the coded transcript instead of sharing the whole interview. A colleague can listen to the passage in context without receiving 45 minutes of unrelated personal material — a smaller, safer share that also respects the participant’s consent, which usually covers research use, not casual circulation of full recordings.

Honest limits

The tool cuts one segment at a time from one channel (mono mix of the first channel for multi-channel files) and exports WAV only — no MP3 encoding, no noise removal, no transcription. Very long files may take a while to decode and use significant memory, because the whole file is decoded before slicing. Browser audio decoding supports common formats (WAV, MP3, Ogg, M4A depending on browser) but not every codec; if a file fails to decode, convert it to WAV in a desktop editor first. Segment boundaries are sample-accurate but not word-accurate: always leave a second of margin at each end so no word is clipped.

Who it is for

This tool is for qualitative researchers excerpting interviews, students preparing clips for presentations, and anyone who needs a short, shareable passage without uploading sensitive audio to a cloud service. It is a cutting tool, not an editor: for fades, noise work, or multi-track assembly, use a desktop audio editor on the exported WAV.

Going further

Handle interview audio as sensitive data even when it feels routine. Store originals encrypted, name segments with participant codes rather than real names, and delete working copies when the analysis ends, following your consent forms and ethics approval. When sharing a segment, ask whether the listener truly needs the audio or whether a transcript excerpt would do: audio carries voice identity, emotion, and background detail that text does not, and participants who consented to anonymized quotes may not have consented to voice sharing. A small habit protects everyone: before exporting, note the segment’s purpose, its start and end times, and who will hear it, in the same log where you keep your coding decisions. Name exported segments so they sort usefully later: participant code, interview date, and start time in the filename, such as P07_2026-03-15_0750.wav, beats “segment.wav” the moment you hold more than three clips. Keep a segment log beside the files — one row per clip with its purpose, its transcript location, and its consent basis — because a folder of anonymous clips is unusable six months later when you can no longer remember which passage was which. Good filenames and a log are unglamorous, and they save more analysis time than any feature. Back up the log with the files themselves, and keep one copy offline: interview data lost to a failed drive is gone in a way a transcript alone cannot replace.

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