Apple Lossless Audio Codec
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英文原文：
Apple's Lossless ALAC Open Sourced posted by Thom Holwerda on Fri 28th Oct 2011 20:42 UTC, submitted by poundsmack
Apple has open sourced ALAC. "The Apple Lossless Audio Codec is an audio codec developed by Apple and supported on iPhone, iPad, most iPods, Mac and iTunes. ALAC is a data compression method which reduces the size of audio files with no loss of information. A decoded ALAC stream is bit-for-bit identical to the original uncompressed audio file. The Apple Lossless Audio Codec project contains the sources for the ALAC encoder and decoder. Also included is an example command line utility, called alacconvert, to read and write audio data to/from Core Audio Format and WAVE files. A description of a 'magic cookie' for use with files based on the ISO base media file format (e.g. MP4 and M4A) is included as well. The Apple Lossless Audio Codec sources are available under the Apache license."
