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Logic Pro 9 User Manual - Help Library - Apple

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To choose the recording file type<br />

1 Open Audio preferences by doing one of the following:<br />

• Choose <strong>Logic</strong> <strong>Pro</strong> > Preferences > Audio (or use the Open Audio Preferences key<br />

command).<br />

• Click the Preferences button in the Arrange toolbar, and choose Audio from the pop-up<br />

menu.<br />

2 Click the General tab.<br />

3 Choose the file type in the Recording File Type pop-up menu.<br />

There is a maximum recording size according to file type, as follows:<br />

• AIFF: The AIFF file format cannot handle audio file recordings larger than 2 GB:<br />

• For 16-bit, 44.1 kHz stereo files, this equals a recording time of about 3 hours and<br />

15 minutes.<br />

• For 24-bit, 96 kHz, 5.1 surround files, this equals a recording time of about 20 minutes.<br />

• WAVE (BWF): The WAVE file format cannot handle audio file recordings larger than<br />

4 GB:<br />

• For 16-bit, 44.1 kHz stereo files, this equals a recording time of about 6 hours and<br />

30 minutes.<br />

• For 24-bit, 96 kHz, 5.1 surround files, this equals a recording time of about 40 minutes.<br />

• CAF: If the size of your recording exceeds the above limits, choose the CAF (<strong>Apple</strong><br />

Core Audio Format) file format, which can handle the following recording times:<br />

• About 13 hours and 30 minutes at 44.1 kHz<br />

• About 6 hours at 96 kHz<br />

• About 3 hours at 192 kHz<br />

The bit depth and channel format—mono, stereo, or surround—do not affect the<br />

maximum recording size of CAF files.<br />

Chapter 14 Recording in <strong>Logic</strong> <strong>Pro</strong><br />

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