Audio Recorder
Record audio.
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How a browser records audio
Recording in a browser uses the MediaDevices API to request access to a microphone, then feeds the resulting stream into a recorder that encodes it as it arrives. Two settings define the quality of what you capture: the sample rate, usually 44.1 or 48 kHz, which sets how many measurements of the waveform are taken per second, and the bit depth, which sets how precisely each measurement is stored.
Everything else is acoustics rather than software. Distance from the microphone matters more than the microphone's price, because doubling the distance quarters the energy reaching it while the room noise stays constant. Hard parallel surfaces cause reflections that make a recording sound hollow, and soft furnishings fix that better than any filter applied afterwards. Recording a few seconds of silence in the room is also worth doing, since it gives noise-reduction tools a profile to work from.
Why we built this tool
People record voice notes, interviews, podcast segments, lecture material, pronunciation practice, and quick audio messages — usually needing nothing more than a microphone and somewhere for the file to land.
Recording apps and sites routinely upload audio to a server, requiring an account and storing your voice on their infrastructure. For an interview, a medical note, or a private message that is a real disclosure, and voice is biometric data in several legal frameworks. Ours records through the browser's own API and keeps the audio in the page, writing it straight to your downloads when you stop. No upload endpoint exists, so nothing can be transmitted, and there is no time limit imposed by someone's storage quota.
Tips and common mistakes
- Record a short test and listen back before the real take — level problems are unfixable afterwards.
- Soft furnishings improve a room more than any filter applied later.
- Capture a few seconds of silence at the start so noise reduction has a profile to work from.
- Keep peaks well below the maximum; clipped audio cannot be repaired.
Quick start: using Audio Recorder
- Grant microphone permission when prompted.
- Record a short test first and listen back before the real take.
- Position the microphone close to the source, and record in a soft-furnished room if you can.
- Capture a few seconds of room silence at the start for later noise reduction.
- Stop the recording and download the file.
Clean it up with Remove Silence, trim it using Cut Audio, or transcribe it with Speech to Text.