Tone generator, pink noise and frequency sweeps
Create test signals (pink or white noise, sine tones and sweeps from 20 Hz to 20 kHz) and download them as 16- or 24-bit WAV.
Pink noise · 10 s · mono · 24 bits · 1.4 MB
- Processing
- In your browser
- Upload
- No upload to ShiftAny
- Account
- No sign-up
- Price
- Free
- Output
- WAV
- Platform
- Web browser
How to use “Tone and Noise Generator”
- Choose the signal: pink noise, white noise, sine tone or sweep.
- Set the frequency (for the tone), the duration and the peak level in dBFS.
- Turn your speakers down and click “Listen” to check it.
- Choose 16 or 24 bits and download the WAV.
Which signal to use for each test
Pink noise has the same energy in every octave, the way the ear perceives tonal balance: it is the standard for tuning and equalizing speakers and rooms. White noise has the same energy per hertz, so it sounds brighter; it is used to test equipment and measure responses. The sine tone (1 kHz is the usual reference) is for calibrating levels and hunting hum or resonances, and the logarithmic sweep runs from 20 Hz to 20 kHz spending the same time on each octave, ideal for finding resonances or checking how far a pair of headphones reaches. Every signal is generated mathematically in your browser, normalized to the peak you choose and given 5 ms fades so it does not click.
Frequently asked questions
What is the difference between pink and white noise?
White noise has the same energy at every hertz and sounds very bright; pink noise falls 3 dB per octave and spreads its energy evenly across octaves, which is why it sounds more balanced and is used for calibration.
Which level should I choose?
For tests, a −12 dBFS peak is safe. Reference tones are usually generated at −18 or −20 dBFS. The level shown is always the peak: the file never clips.
16 or 24 bits?
16 bits is enough for listening and testing equipment. 24 bits gives more noise headroom for measurements or for editing the signal later.
Is it dangerous to listen to?
It can be at high volume, especially on headphones and at high frequencies. Start with your equipment’s volume low and raise it gradually.