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The 'Music' category is merely a guideline on commercialized uses of a particular format, not a technical assessment of its capabilities. For example, MP3 and AAC dominate the personal audio market in terms of market share, though many other formats are comparably well suited to fill this role from a purely technical standpoint.
The data compression software for encoding into ALAC files, Apple Lossless Encoder, was introduced into the Mac OS X Core Audio framework on April 28, 2004, together with the QuickTime 6.5.1 update, thus making it available in iTunes since version 4.5 and above, and its replacement, the Music application. [8]
Customers could download music in a closed-source digital rights management (DRM)-restricted form of 128 kbit/s AAC (see FairPlay) via the iTunes Store or create files without DRM from their own CDs using iTunes. In later years, Apple began offering music videos and movies, which also use AAC for audio encoding.
For example, LAME was chosen as the representative MP3 encoder because it clearly outperformed four other MP3 encoders on a subset of the full sample corpus. Sebastian Mares: 2005 December multiple ~140 (nominal 128) Nero AAC 3.1.0.2 VBR/Stereo - Streaming, 100-120 kbit/s [LC AAC] iTunes AAC 6.0.1.3 128 kbit/s, VBR; LAME 3.97 Beta 2-V5—vbr-new
Unlike music streaming services, which typically charge a monthly subscription fee to stream digital audio, digital music stores download songs to the customer's hard disk drive of their device. The customer will have the copy of the song permanently on their disk, provided the track is not deleted by the customer, the disk does not get ...
FLAC (/ f l æ k /; Free Lossless Audio Codec) is an audio coding format for lossless compression of digital audio, developed by the Xiph.Org Foundation, and is also the name of the free software project producing the FLAC tools, the reference software package that includes a codec implementation.
A lossless audio coding format reduces the total data needed to represent a sound but can be de-coded to its original, uncompressed form. A lossy audio coding format additionally reduces the bit resolution of the sound on top of compression, which results in far less data at the cost of irretrievably lost information.
FLAC is natively supported on IOS 11, including all "iDevices", but only via the Files (Apple) app or iCloud Drive. iTunes does not support FLAC, with Apple only offering native support for their own similar ALAC lossless audio format. Third-party applications are available in the App Store which enable FLAC playback.