# Test Audio Generator — Tones, Noise & Silence

> Generate WAV test audio: sine, square, sweep, noise or silence at any rate, depth and duration.

A test audio generator produces WAV files containing a sine, square, sawtooth or triangle tone, a frequency sweep, white noise or pure silence. Set the duration, frequency, sample rate, bit depth, channel count and amplitude, and the file is encoded sample by sample in your browser.

**URL:** https://convertto.tech/t/sample-audio-generator
**Category:** Samples & Mock Data (https://convertto.tech/c/sample-data)
**Privacy:** Runs entirely in the browser; no upload
**Cost:** Free, no sign-up
**Last updated:** 2026-08-01

## Key facts

- **Sample rates:** 8 kHz to 192 kHz, covering telephone through studio
- **Bit depths:** 8, 16, 24 and 32-bit PCM, mono or stereo
- **Duration:** From 10 milliseconds to one hour
- **Privacy:** Runs entirely in your browser — nothing is uploaded
- **Cost:** Free, unlimited, no sign-up

## How to use

1. Choose the waveform.
2. Set the duration.
3. Set the frequency.
4. Set the sweep end frequency.
5. Choose the sample rate.
6. Choose the bit depth.
7. Choose the channels.
8. Set the amplitude.
9. Set the fade in / out.
10. Set the how many files.
11. Enter or paste your seed.
12. Press Run, then download the result when it is ready.

## FAQ

### Why does my tone click at the start?

Because the waveform begins mid-cycle at full amplitude. Set a fade of 10–20 ms and the click disappears — that is what the fade control is for.

### What sample rate should I pick?

A rate must be at least twice the highest frequency you want to represent, which is the Nyquist limit. 44.1 kHz covers human hearing; 48 kHz is the standard for video; anything higher only matters for studio processing.

### Why generate silence?

A silent file of a known length is the cleanest way to test duration handling, padding, concatenation and playback timing without any audio content confusing the result.

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