TrueTone
Features:-can cover a frequency range from 10Hz to 20kHz (actual range dependent on your audio hardware),-exact tone generation, no messy approximation,-*new
* toggle for logarithmic slider,-multiple wave types! Choose from sine, square, sawtooth and triangle,-setting the frequency down to a single Hertz (and not 10 Hz, like in some other applications),-connect external speakers to your device for even better sound and frequency range!-Easy way to contact the developer: just press the "Report Bug/Suggest Feature" button and type away!-option to keep the app running indefinitely,-adapted for accessibility applications
- easier to use for the vision-impaired.
Note: you can set the volume simply by using the buttons on your phone.
Internet permissions are needed for:-ads (this is an ad-supported ad),-feedback (you can report a bug or suggest a feature directly from the app),-ANONYMOUS usage statistics.
Wakelock permission is needed for the "keep alive" option.
Category : Music & Audio
Reviews (28)
Thanks for the wonderful app. Log function is great. Individual Hz step buttons is wonderful. Any chance we could get 1hz and 10hz jumps? Also, I am not sure if this is possible, but I have been doing some research regarding < 1Hz frequencies. I am using some android devices as LFOs, but need them to go slower. Any ideas?
Want or thinking be come an Audiophile? Take a tone test... After trying various tone generators on Google Play, this app is the best. No "pops" or "clicks" like other tone generator apps. By the way, if you are able to hear from 30hz to 17khz without increasing the volume, you may consider yourself possessing a pair of "golden ears".... Oh, don't forget to use a pair of good closed headphones. :) PS: According to my Yokogawa oscilloscope, these frequencies are accurate to 1% (using a LG Optimus 4x HD).
Great app, does exactly what it says. Just beware of the in app volume control, it isn't always interlinking. Therefore what you expect to be a quiet tone, turns out to be loud... A bug me thinks.
First, it worked "out of the box", and I was listening to tones immediately. Bravo! Second, I have tinnitus of near a single pitch. Playing a tone instantly reduced the ringing in my head. I still need to find the correct pitch.
Got broken after update to Android 4.3 on Galaxy samsung S3. Works again though if you uninstall it then re-install.
Used it to experimentally determine the speed of sound in my physics lab today. We got less than 1% error.
This app did everything it said it would! This helped me determine how low of a frequency my new headphones could play.
Using a high quality pair of headphones, this app can really help with programming hearing aids. Of course you'll have to have a programmer with the aids, to do this. The best aids for the cheapest price, with programmer, are the SIE64 by Blamey Saunders. You can buy everything online and their tech support is the best too.
This frequency generator works well, and seems to be bug free, only thing that would make it better is the ability to generate multiple frequencies simultaneously.
Pops are worrying me. I don't use sweep for that reason.( Use a limiter if using sweep at high volumes ) I needed a 1hz tone and this appears to be accurate judging by other uses
I use this app for tuning subwoofer enclosures. It also helps me to tell customers what their current box is tuned at.
U due not play guitar but I play other instruments & ya it helps
This is a great tool for generating various tones. I really like the volume slider, very nice idea. Good job!!
A generally great app is a let down a little by pops between frequencies and audio output pause/interruption on device orientation change/screen rotation. Though not essential, UI could use a little polish. Tested on N7.
This is the only tone generator on the Play Store that has a nice look, clean and dead-simple interface and does exactly as advertised. Great work! Running nicely on my SGS I9000 running CM10-nightly.
Frequency varies by .2%, amplitude throughout the spectrum varies by only 2.5% according to a Tektronix O-scope. Great for audio gear setup.
extremely simple interface, very easy to set the frequency, and it appears to generate the correct tone
Good interface but i don't trust the high and low frequency of it.
Believe it or not, in using this for university research... I can say that with some degree of confidence, the tones are pretty close to where they should be (FFT analysis), but I'm sure it depends on your device.
For those who wish to open there minds with sound this is perfect.
I get to test my sub and door speakers I install into cars daily.
I can hear all frequencies from 1hz to 21,000hz using this app so I highly doubt they are the correct frequencies being played!
Works great can produce sounds from 1-21000 hertz I loved it.
Log sweep feature is very useful but please fix the clicking during sweep!!!!!!
Best app among all the crappy apps
I love this app. Simple and effective. Thank you for this app.
works to control insects
Be careful not to use the high frequencies around dogs. I heard nothing, but my poor pup leaped from his bed and is hiding under the couch and shaking now. The cat can hear it too, but she doesn't care. Having tested this on several devices, I can say results vary drastically by device due to their internal speakers. And higher end phones aren't necessarily better for this app. A Blu R1 HD, a budget phone if there ever was one, was more accurate with frequency output than a Samsung Galaxy S6. The S6 did nothing but hiss at frequencies above 16khz.