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MPEG Audio Coding
https://cs.haifa.ac.il/~nimrod/Compression/Speech/A1mpeg12-2004.pdf
• High quality low bit-rate audio coding •MPEG-1: Mono & Stereo, sampling rates of 32KHz, 44.1KHz and 48KHz. •MPEG-2:Backward compatible coding of 5+1 multi-channel sound, more sampling rates: 16KHz, 22.05KHz and 24KHz.
Microsoft MPEG-1/DD/AAC Audio Decoder …
https://docs.microsoft.com/en-us/windows/win32/directshow/microsoft-mpeg-1-dd-audio-decoder
MPEG-1 audio layers I and II. Backward-compatible MPEG-2 audio, layers I and II (ISO/IEC 13818-3), mono and stereo only. Advanced Audio Coding (AAC) Low Complexity (LC) profile. High-Efficiency AAC (HE-AAC) version 1 and version 2. Pass-through Digital Theater Systems (DTS) for digital output.
MPEG-1 | MPEG
https://mpeg.chiariglione.org/standards/mpeg-1
MPEG-1. ISO/IEC 11172. Coding of moving pictures and associated audio at up to about 1.5 Mbit/s.
About MPEG-1 audio coding, it can be said that: (a ...
https://www.chegg.com/homework-help/questions-and-answers/mpeg-1-audio-coding-said-apply-psycho-acoustic-model-employs-mdct-coding-b-applies-modelin-q92190128
About MPEG-1 audio coding, it can be said that: (a) It does not apply any psycho-acoustic model, as it employs MDCT coding; (b) It applies a modeling that adapts bits to each frequency band as a function of the average auditory threshold perceived by the human ear;
MPEG Digital Audio Coding Standards - Wheatstone
https://www.wheatstone.com/joomlatools-files/docman-files/downloadables/mpeg%20audio%20coding.pdf
MPEG’sinitialeffortwastheMPEGPhase1(MPEG-1)codingstandardsIS11172supportingbit rates of around 1.2 Mb/s for video (with video quality comparable to that of today’s analog video cassette recorders) and 256 kb/s for two-channel audio (with audio quality comparable to that of today’s compact discs) [8].
Audio | MPEG
https://mpeg.chiariglione.org/standards/mpeg-2/audio
MPEG-1 Layer I or II Audio is a generic subband coder operating at bit rates in the range of 32 to 448 kb/s and supporting sampling frequencies of 32, 44.1 and 48 kHz. Typical bit rates for Layer II are in the range of 128-256 kbit/s, and 384 kb/s for professional applications.
AUDIO CODING STANDARDS - MP3
http://www.mp3-tech.org/programmer/docs/AudioCoding.pdf
1-48 channels 1997 MPEG-4 T/F coding 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48, 64, 88.2, 96 Indicated by a 23-bit unsigned integer 1-48 channels 1999 Table 1 Comparison of ISO/MPEG audio coding standards 2.1 MPEG-1 The MPEG-1 standard consists of three layers of audio coding schemes with increasing complexity and subjective performance.
~yao Yao Wang Audio Coding - New York University
https://eeweb.engineering.nyu.edu/~yao/EE3414/audio_coding.pdf
©Yao Wang, 2004 EE3414: Audio Coding 18 Basic Steps in MPEG-1 Audio Coding 1. Use convolution filters to divide the audio signal into 32 frequency subbands --> sub-band filtering. 2. Determine amount of masking for each band based on its frequency (threshold-in-quiet), and the energy of its neighboring band in frequency and time
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