Tone MakerTone Maker — tone generator and noise
Play any frequency, sweep the whole range to test your speakers, or play white, pink or brown noise. Both can sound at the same time.
⚠️ Start with the volume low. Loud or very high tones can damage your hearing and your tweeters.
1 Tone
2 Noise
The noise WAV loops seamlessly.
3 Output
Frequently asked questions
What is the difference between white, pink and brown noise?
They are the same random sound with a different balance of lows and highs. White noise has the same energy at every frequency, so it sounds bright and hissy. Pink noise drops 3 dB per octave: every octave gets the same energy, so it sounds even and natural. Brown noise (also called red or Brownian noise) drops 6 dB per octave: mostly low rumble, deep and soft.
Which noise is best to sleep or focus?
It is personal. Many people find brown noise the calmest, pink noise a good middle ground and white noise the best at covering voices. Try each one at a low volume and use the timer so it fades out by itself.
How do I test my speakers or headphones?
Use Sweep from 20 Hz to 20 000 Hz and listen for buzzing, rattles or where the sound disappears. Choose Left or Right to check that each side is wired correctly. Pink noise is the usual signal to compare speakers and tune an equalizer.
What frequencies can I hear?
Young ears hear roughly from 20 Hz to 20 000 Hz; the top end drops with age, and many adults stop hearing somewhere between 12 000 and 16 000 Hz. Small speakers and phones also cannot play the lowest frequencies.
Can I download the sound?
Yes. Each sound has a WAV button: tones and noise from 10 seconds to 5 minutes, and a sweep with its full duration. The noise file loops seamlessly, so you can repeat it in any player.
Is anything sent to a server?
No. The sound is generated by your browser with the Web Audio API; nothing is uploaded and it keeps working offline once loaded.