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AAC supports inclusion of 48 full-bandwidth (up to 96 kHz) audio channels in one stream plus 16 low frequency effects (LFE, limited to 120 Hz) channels, up to 16 "coupling" or dialog channels, and up to 16 data streams.
HE-AAC is also used by AOL Radio and Pandora Radio clients to deliver high-fidelity music at low bitrates. iTunes 9.2 and iOS 4 include full decoding of HE-AAC v2 parametric stereo streams. iTunes 9 thru 9.1, iPhone OS 3.1 and Fall 2009 iPods have support for HE-AAC playback for version 1 with no parametric stereo.
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.
It was designed with Bluetooth bandwidth limitations and processing power in mind to obtain a reasonably good audio quality at medium bit rates with low computational complexity. [ 1 ] [ 3 ] As of A2DP version 1.3, the Low Complexity Subband Coding remains the default codec and its implementation is mandatory for devices supporting that profile ...
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.
System Type Modulation Data rate Sidebands? Ch. Bandwidth Radio spectrum Sound Codec Digital subchannels SFN ... (2 full FM channels) 510–1710 kHz,
A system of digital 5.1 surround sound was also used in 1987 at the Parisian cabaret the Moulin Rouge, created by French engineer Dominique Bertrand. To achieve such a system in 1985, a dedicated mixing console had to be designed in cooperation with Solid State Logic , based on their 5000 series, and dedicated speakers in cooperation with APG ...
Low-bandwidth digital data broadcasting over existing FM radio: ... The first DAB station network was deployed in Bavaria since 17 October 1995 until full coverage in ...
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