Frequency Sweep 20 Hz–20 kHz
A 5-second linear sweep from 20 Hz to 20 kHz across the full audible range — for testing frequency response, spectrograms, and playback fidelity.
Specifications
- Sample Rate
- 44100 Hz
- Bit Depth
- 16
- Channels
- 1
- Sweep
- 20 Hz → 20 kHz (linear)
- Duration Sec
- 5
What is a .wav file?
WAV (Waveform Audio) is a RIFF-based container that typically holds uncompressed linear PCM audio, though it can wrap other codecs. Because samples are stored raw, files are large but lossless and simple to read, with configurable sample rate, bit depth, and channel count. It is the standard format for high-fidelity and intermediate audio.
How to use this file
Use an example WAV to test PCM decoding, sample-rate and bit-depth handling, waveform rendering, and audio pipelines that need a lossless reference source.
How to use this file for testing
“Frequency Sweep 20 Hz–20 kHz” is a deterministic Novus Examples fixture for Audio analysis. Pure tones, sweeps, and noise with known frequencies and levels for testing spectrum, level, and waveform tools.
Documented properties for this file: 16-bit · 1 ch. Compare results against paired or grouped companions on this page when present (clean↔damaged, searchable↔scanned, or format twins) so scores stay reproducible across runs.
Download the file once, keep the path stable in CI or local scripts, and treat the spec table as the contract: dimensions, seeds, field lists, and roles are intentional. Corrupt or invalid samples are labelled as such — expect parsers to fail loudly rather than silently accept them.
Media fixtures are short and synthetic by design. Prefer waveform or transcript ground truth in the same group when measuring ASR, trim, upscale, or sync tools; do not assume broadcast-quality masters.
Code examples
<audio controls preload="none" src="sweep-20-20k.wav"></audio>Related files
- wav1 kHz Sine ToneA pure 1000 Hz sine tone, 3 seconds, 16-bit 44.1 kHz mono — a clean reference signal for level metering, spectrum analysis, and waveform rendering.
- wav220 Hz Sine ToneA pure 220 Hz sine tone, 3 seconds, 16-bit 44.1 kHz mono — a clean reference signal for level metering, spectrum analysis, and waveform rendering.
- wav440 Hz Sine Tone (A4)A pure 440 Hz sine tone, 3 seconds, 16-bit 44.1 kHz mono — a clean reference signal for level metering, spectrum analysis, and waveform rendering.
- wavPink NoiseThree seconds of pink noise with a 1/f power spectrum — the standard reference for loudness and room-calibration testing.
- wavWhite NoiseThree seconds of white noise with a flat power spectrum — a reference for testing noise handling, gating, and spectral tools.
- wav1 kHz Tone @ 16000 Hz Sample Rate (WAV)A 1 kHz sine tone sampled at 16000 Hz — part of a sample-rate ladder (8/16/44.1/48/96 kHz) of the identical tone, for testing resampling, sample-rate detection, and aliasing.
Generated by generation/audio_reference.py. Free for any use, no attribution required — license.