Apple Logic Express 9 - Manual (Page 832)

To set the bounce filename and folder
1 Type a new filename in the Save As field to change the default filename.
2 Click the New Folder button in the lower-left corner of the Bounce window to create a
new folder, if you like.
3 Click the Bounce (or Bounce & Burn) button.
All files (if multiple files are created) are saved in the chosen folder, and assigned the
name you entered, with appropriate file extensions: .wav, .aif, .m4a, and so on.
Bouncing and Dithering
Logic Express provides you with the professional POWr (Psychoacoustically Optimized
Wordlength Reduction) and UV22HR dither algorithms, designed to convert 24-bit
recordings to 16-bit files (as required for CD burning, for example).
POWr dithering can be applied when:
• Bouncing audio files to disk
• Exporting OMF files (See Exporting OMF Files .)
• Exporting AAF files (See Working with AAF Files .)
You can choose between the following dithering modes:
• None: No dithering is applied.
• POWr #1 (Dithering): A special dithering curve is used to minimize quantization noise.
• POWr #2 (Noise Shaping): Additional noise shaping is used over a wide frequency range,
which can extend the dynamic range of the bounce file by 5–10 dB.
832 Chapter 29 Bouncing Your Project