AudioTest generates audio test signals and can save audio test signals as audio files.

• Wave types: sine wave, triangle wave, sawtooth wave, square wave, pulse wave, anti-aliased sawtooth wave, anti-aliased square wave, anti-aliased pulse wave, uniform distribution white noise, pink noise, brown noise, and Gaussian distribution white noise
• Frequency: fixed, linear sweep, and logarithmic sweep
• Level: fixed, linear sweep, and logarithmic sweep
• Phase shift: ±180 degrees
• Sample rates: 11.025k, 22.05k, 32k, 44.1k, 48k, 88.2k, 96k, 176.4k, and 192k
• Bit depths: 8-bit, 16-bit, 24-bit integers, and 32-bit float
• Channels: mono, stereo, left, and right
• Level meters: peak, RMS (root-mean-square), and average
• Save audio test signal as an audio file
• Keyboard shortcuts to adjust various parameters
• Undo/Redo support for parameter changes
• AppleScript scripting support

NOTE: iTunes doesn't accept caf files. On OS X 10.8 and up, you can open the caf file using QuickTime Player, and export directly to iTunes by choosing "Export To iTunes..." from the File menu. On OS X 10.7 and earlier, you can covert the caf file to an m4a file using QuickTime Player, then add it to the iTunes Library. To convert, open QuickTime Player, open the caf file, choose "Export..." from the File menu, save, and drag & drop the saved m4a file onto "LIBRARY" on the iTunes window or choose "Add to Library..." from the File menu in iTunes and select the saved m4a file.

What’s New

Version 2.2

Use AudioComponent APIs instead of Carbon Component Manager APIs.

Ratings and Reviews

B'bba ,

Excellent App, Excellent Developer!

I’ve used this app for many years. It has frequently come in handy for many different kinds of audio work. It is highly configurable, and has a massive feature set. Works very well, and is very easy to understand.

Such a bargain! I don’t know what I’d do without this app!

g4mm4s ,

A very handy tool

I purchased this so I could quickly calibrate several sets of monitors without having to use a small clip of uncorrelated pink noise that I’ve been loading up into my DAW for years. It sets up quickly and is easy to dial in. It's got a lot of other features and can generate various waveforms which could potentially be used in analysis for room treatment or further monitor frequency response calibration. It also allows me to select the output independently of what Core Audio is set to, so I can send the noise out of a separate interface if necessary. Overall, a great purchase that now resides in my daily go-to applications.

mark@danielhertz ,

great audio test software

Audio Test is a great program and I highly recommend it. It’s easy to use and well designed, very useful for frequency response measurements especially through wireless systems to see the response of the overall signal throughpath. I use Audio Test to show how the compact DH M10 speaker has good response to 35Hz, right off my Mac and via wireless, it blows people away. Audio Test is a "must have."


Katsura Shareware
666.2 KB

OS X 10.6 or later, 64-bit processor



Age Rating


  • Family Sharing

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