Audio Codecs

With over 20 years of experience, Fraunhofer IIS is the industry leader in high-quality low bit-rate audio coding.

mp3 and AAC codecs (mono, stereo, discrete multi-channel):

• mp3: The standard for compressed music
• mp3HD: The lossless mp3 extension
• AAC-LC: Most common AAC profile, used e.g. by iPod
• HE-AAC, HE-AAC v2: Improved quality below 64 kbit/s
• HD-AAC: Lossless audio coding compatible to AAC
• AAC-ELD, AAC-LD: Full bandwidth, low delay audio coding

Low bit-rate multi-channel audio codecs:

• MPEG Surround: 5.1 sound at stereo bitrates
• mp3 Surround: 5.1 sound at mp3 stereo bitrates

Third party products:

• Sonnox Fraunhofer Pro-Codec Plug-in

Others:

• MPEG Layer-2: Used in European broadcasting

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