TrueTone

TrueTone


Test your hearing! Find out the real limits of your phone audio! Annoy your friends (at your own risk of course)! Learn and teach about how different tones sound like! Generate exact references tones! All this and more in this app.

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.

Recent changes:
IMPROVEMENTS:
-logarithmic slider option is now available - please provide feedback on how you like it!
-added landscape mode,
-increased spacing so that accidentally pressing the wrong button is harder,
-app now provides better crash reports to dev (no private data sent).
Add to list
Free
86
4.3
User ratings
433
Installs
50,000+
Concerns
0
File size
261 kb
Screenshots
Screenshot of TrueTone Screenshot of TrueTone Screenshot of TrueTone Screenshot of TrueTone Screenshot of TrueTone Screenshot of TrueTone Screenshot of TrueTone
About TrueTone
Test your hearing! Find out the real limits of your phone audio! Annoy your friends (at your own risk of course)! Learn and teach about how different tones sound like! Generate exact references tones! All this and more in this app.

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.

Recent changes:
IMPROVEMENTS:
-logarithmic slider option is now available - please provide feedback on how you like it!
-added landscape mode,
-increased spacing so that accidentally pressing the wrong button is harder,
-app now provides better crash reports to dev (no private data sent).

User reviews of TrueTone
Can you please make the slider logarithmic instead of linear? Look on any graphic equalizer and you will see how there is equal spacing between 100Hz, 1000Hz, 10000Hz (logarithmic). You have a small space between 100Hz and 1000Hz, and a large space between 1000Hz and 10000Hz (linear). Thanks!
Jun 27, 2011
Android Market Comments
A Google User
Feb 21, 2015
Few add ons please Listening to the hertz in points like 7.8, 13.7, 19.6 etc. Also a mega hertz option would be nice as well if possible thank you for this app may your life be full.
A Google User
Feb 5, 2015
Opening consciousness For those who wish to open there minds with sound this is perfect.
A Google User
Jan 19, 2015
Excellent works to control insects
A Google User
Nov 16, 2014
Exactly what I need Works great can produce sounds from 1-21000 hertz I loved it.
A Google User
Sep 11, 2014
Great for adjusting my hearing aids 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.
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