Audio Test Tone Generator

Simple app, easy to use, does what it should. I like the phase control (no need to switch wire polarity on speakers for testing). Biggest drawback is that 250 Hz is the lowest tone. I do like the fact that it doesn't ask for irrelevant permissions - it actually doesn't ask for any permissions!

Wonderful apk. I used it to find the correct polarity of the speakers of my home assembled 5.1home theatre system, after playing the tone via Bluetooth and then putting on two speaker at a time. I could easily hear when the tone sound was doubled or cancelled each other to change the speaker wire polarity.

Works

Does exactly what I need it to do. I use it for the clipping glitch when plugging the 3.5mm jack into my stereo and listening to audiobooks. Set it to 20k, stereo, sine wave and away you go. Champion, nice and simple. Thanks devs.well done.

Such an importsnt feature, few Have it. This does. Kudos.

Works fine for my purposes

Unlike any of the dog whistles, this app actually does produce up to 20kHz from my phone's speakers. No fancy presets, but great basic functionality. Wish it had a frequency sweep function.

The app lacks the common white/pink noise source, but when generating sine waves it can generate left/right signals with a defined phase offset. This is very useful when debugging audio equipment, e.g. for creating symmetric signals. Also the trim seperately labeled in dB for left/right is handy.

Neat!

No sweep facility, sine only, frequency is only selectable in prefixed increments and lowest freq is 250Hz. Might still work for some very simple testing applications, and at least it's clean-looking.

Makes noise, but not at the specified frequency. Seems to be about half the selected frequency. Now uninstalling from my ADR6300.

"300913...tryout...thanks..."

Very good

Happy about the fact that it will run in background but poor selection of frequencies, no white noise, and "sinus"? Really dude?

It would be five stars with a frequency control for real time adjustment.

For audio checking all you need now is an Oscilloscope.

I've got a sixth grader starting to learn about waves. This app provides a great opportunity to demonstrate frequency, amplitude and constructive and destructive interference (by phase shifting the right and left stereo channels through a Bluetooth-enabled speaker). It's not a stretch to see the brilliance of noise canceling audio headphones. Again, bravo to this app creator!

Almost works... Makes noise, but not at the specified frequency. Seems to be about half the selected frequency. Now uninstalling from my ADR6300.

Rhythm & Rhyme Studio For audio checking all you need now is an Oscilloscope.

Eh Happy about the fact that it will run in background but poor selection of frequencies, no white noise, and "sinus"? Really dude?

Very useful, but could use variable pitch It would be five stars with a frequency control for real time adjustment.

Very basic No sweep facility, sine only, frequency is only selectable in prefixed increments and lowest freq is 250Hz. Might still work for some very simple testing applications, and at least it's clean-looking.