macOS User Guide
- Welcome
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- Work across devices using Continuity
- Use iPhone as a webcam
- Use iPhone with Desk View
- Stream audio and video with AirPlay
- Use one keyboard and mouse to control Mac and iPad
- Hand off between devices
- Unlock your Mac with Apple Watch
- Make and receive phone calls on your Mac
- Sync music, books and more between devices
- Resources for your Mac
- Resources for your Apple devices
- Copyright
Use AURoundtripAAC to check audio files for clipping on Mac
The AURoundtripAAC Audio Unit lets you compare audio encoded using AAC files against a source audio file. It also includes clip and peak detection, as well as a simple listening test environment. You can use the audio unit in any audio unit host app, such as Logic Pro or GarageBand.
Click Listening Test to perform a double-blind test to identify an “unknown” audio source as either source audio or encoded audio.
The AURoundtripAAC Listening Test window has three buttons: Source, A and B. The Source button always auditions the source audio. At the beginning of each test cycle, the source audio is randomly assigned to either the A or B button, and the encoded audio is assigned to the other button.
Click Training Mode to display the results of the test each time you select a source. This mode should be used for training only. For reliable ABX testing, run a predetermined number of test cycles before viewing the results.