Silence Remover
Pick an audio file and this trims the dead air using the same hysteresis-and-padding approach as the NoiseZero app. Everything runs in your browser tab — the file is never uploaded anywhere.
How this works
The tool measures loudness in 20-millisecond windows, uses two thresholds instead of one so a natural dip in your voice doesn't get mistaken for silence, and then applies two more rules before it cuts anything: short pauses under your chosen threshold are always kept in full — they're breaths, not mistakes — and long pauses are collapsed to a short beat rather than deleted outright, with a little padding left on either side so words don't get clipped.
It's a browser-sized version of the same approach explained in how to remove silence without making it sound choppy. For anything longer than a few minutes, filler-word removal, noise reduction, or exporting straight to WhatsApp, the NoiseZero app runs the full pipeline on-device.