iPad Screenshots


"Audio Tone Generator for iPad" is a high quality Audio Signal Generator app for iPad.

It creates the Audio Reference Signals as Sine waves, Frequency Sweep, White Noise and Pink Noise, and has a high precision of DVD quality and a frequency accuracy of 0.1Hz.

It will help you to make the benchmark for your audio equipment and loudspeakers, your listening environment and room acoustics or your hearing.

The signals created by this app can be best used in conjunction with external devices, such as an audio spectrum analyzer or a sound level meter.

In addition, it can generate octave band noise in 1/1 or 1/3 octave band. Octave band noise can be used for various purposes as a reference sound source for environmental sound measurement, sound tuning, auditory effects like tinnitus relief and sound masking.

- Sine-wave signal generation on SINE mode : Predefined frequencies - 63Hz, 125Hz, 250Hz, 500Hz, 1000Hz, 2000Hz, 4000Hz, 8000Hz, 16000Hz
- Frequency Sweep on SWEEP mode : Predefined frequencies - 20Hz-20000Hz, 200Hz-4000Hz, 1000Hz-8000Hz, 220-880Hz(A3 - A5)
- Sweep Time Control : 10 seconds to 180 seconds.
- Pause function on SWEEP mode.
- Noise generation on NOISE mode : White Noise or Pink Noise.
- Octave band noise generation on NOISE mode : 1/1 or 1/3 octave band.
- Burst signal generation on NOISE mode : None, 1, 2, 5 10 sec.
- Supports of frequencies range between 20Hz to less than 23999.9Hz.
- Frequency Accuracy : 0.1Hz
- Direct frequency input by the keyboard.
- Output Channel Selection : L, R, L&R
- Phase Inversion in STEREO output. (In phase / Out of phase)
- Output Gain Control.
- DVD Quality Output

- Evaluating of Loudspeakers and Headphones
- Evaluating and Tuning of Audio amplifiers, Equalizers and many other Sound equipments.
- Acoustics testing.
- Frequency response measurement for Audio systems using White noise and Pink noise
- Burn-in for Audio systems, Sound equipments and Loudspeakers.
- Demagnetization.
- Sound Masking.
- Relaxation and Meditation.
- Hearing loss Test.
- Mosquito sound creation.

On the keyboard input of frequency, please press the Return key after entering a numeric value. Also, in the Frequency Sweep mode, please press the Return key after entering continuously two numeric values.

Please be careful that the high-frequency signals of high volume in continuous may damage the loudspeakers, even if your ears do not perceive it as being too loud.

AirPlay data transmission is a wireless communication system using Apple's proprietary audio data compression. For this, there are cases where the random sound noise is generated by radio condition and the compatibility of AirPlay connection equipments. Note that it may occur at particularly high frequency band.

TOON,LLC is a company that seeks the comfort of sound environment based on our acoustic proprietary technology, and we will provide tools for audio professional, sound technology, home theater installer, and anyone who loves audio.

Please visit our iOS App Support page for more information on this app.

What's New

Version 4.1

- Changed Noise filtering to Octave band noise generator.
- Changed the screen design.
- Requires iOS11.3 or later.

Ratings and Reviews


Very nice app

Liking this app and it does what it says besides me thinking it did acoustics analyzing. A little pricey for the $6 mark but if you're wanting to check you speaker frequency range it is good for that.


774.1 KB
Requires iOS 11.3 or later. Compatible with iPad.
Age Rating
Rated 4+


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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