I made an online tone generator based on the Firefox Audio API HTML5 Web Audio API. It’s basically a large logarithmic slider that allows real-time, smooth frequency changes.
Features
- Fine-tune the frequency in 1 Hz, 0.01 Hz and 0.001 Hz increments
- Pick a music note from a list (added Sep 2014, revamped May 2016)
- Increase/decrease the frequency by one octave (added Aug 2015)
- Can change the frequency smoothly as you move the slider
- Keyboard shortcuts (added Aug 2015)
- Generate a link to a specific tone, so you can share it (added May 2016)
- Choose sine/square/sawtooth/triangle wave (added Aug 2017)
- Input frequency as a number (added Aug 2017)
- Works well on Chrome, Firefox & Safari – including mobile devices (iOS, Android) – requires a browser with support for the Web Audio API.
There are other tone generators on the Web, but they are not as cool (if I do say so myself) and/or they require Java or Flash.
What can you use a tone generator for? You can do a science experiment with resonance, tune a musical instrument, test your new audio system (how low does it go?), test the limits of your hearing (I can hear virtually nothing above 18,000 Hz, even at maximum volume), or figure out your tinnitus frequency to better target therapy.
You did a fantastic job!I recently discovered how sine waves are far more useful for pitch control and ear training, than the notes played on the piano.
Would it be possible to get a version with Latin names of the notes?
Do re mi fa sol la si
Thank you
I use this regularly for tuning my instruments, and I figured I should just leave a comment of appreciation. Cheaper than buying tuners – and more fun to.
Thanks, Filip!
Brought the mucus in my airways in interference and kicked it out, thank you very much!
A breathful site here!
I find your sound tool searching for variable tone generator to explain frequencies to a 18 student. Then I use it to test my hearing window 🙂 🙂 Now I’m 66 years old and double times perforated tympanic membrane and I still have 160 -:- 10200 so I still can comunicate with humans 🙂 🙂
Really appreciated your great and very useful job. Thank you Tomasz
It’s helpful service but it would be nice to download the received tone in mp3 format.
I love the tone generator. But, you should add a record button to it, because I have found that you can actually make music with it.
Is it possible to use your tone generator for Morse Code training?
IE use “enter key” or “space bar” to make tone only when key is pressed?
So I can practice morse.
Nice work. It was easy to use and functioned well.
This is great! Thanks.
Hi Tom – I’m wondering what kind of content you upload to your patreon? I looked at the tiers but couldn’t find much explanation for each. I absolutely love your tone generator website, thank you!
I don’t upload any content. Thanks for your kind words about the generator, glad you like it!
Thanks for making this, Tomasz. It’s been useful to find out how low my bass output is from my hi-fi. I sent you a little thank you so please enjoy a drink on me. Cheers.
Thanks very much, Rich!
I recently got hit with sudden sensorineural hearing loss (SSHL) in one ear, which has been an … experience. I’m working with an ENT to see what can be done (medication has brought some hearing back), but I just wanted to thank you for this little tone generator website. I’ve been using it do some characterization, on my own, of my symptoms day-to-day to see how things are changing, both with the tinnitus that came with the hearing loss, and also the diplacusis dysharmonica (double hearing, with the added cherry on top that, now, one ear perceives a pitch a semitone sharper than the other). It’s been very helpful to be able to play a tone and pan it across both ears to both characterize the severity over time, and to, hopefully, retrain my brain to perceive the pitches as the same.
Anyway, thanks, again, great job with the website.
Eric–
Well, that really sucks, doesn’t it? I wish I could offer some help or advice, but SSHL is outside of my area of expertise. I’m glad my site has been at least a bit helpful. I hope you work your way back to full stereo!