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PowerPoint Presentation
https://courses.engr.illinois.edu/cs414/sp2012/Lectures/lect12-mpeg-audio.ppt
CS 414 - Spring 2012 MPEG-1 Audio Encoding Characteristics Precision 16 bits Sampling frequency: 32KHz, 44.1 KHz, 48 KHz 3 compression layers: Layer 1, Layer 2, Layer 3 (MP3) Layer 3: 32-320 kbps, target 64 kbps Layer 2: 32-384 kbps, target 128 kbps Layer 1: 32-448 kbps, target 192 kbps CS 414 - Spring 2012 MPEG Audio Encoding Steps CS 414 - Spring 2012 MPEG Audio …
MPEG/Audio Compression - SlideShare
https://www.slideshare.net/BrewsterXO/mpegaudio-compression
MPEG-I Audio Features PCM sampling rate of 32, 44.1, or 48 kHz Four channel modes: Monophonic and Dual-monophonic Stereo and Joint-stereo Three modes (layers in MPEG-I speak): Layer I: Computationally cheapest, bit rates > 128kbps Layer II: Bit rate ~ 128 kbps, used in VCD Layer III: Most complicated encoding/decoding, bit rates ~ 64kbps, originally …
Jpeg and mpeg ppt - SlideShare
https://www.slideshare.net/siddharthrathore7/jpeg-and-mpeg-ppt
MPEG-1 MPEG-1 was designed for coding progressive video at a transmission rate of about 1.5 million bits per second. It was designed specifically for Video-CD and CD-i media. MPEG-1 audio layer-3 MP3 has also evolved from early MPEG work. 27 28. MPEG-2 MPEG-2 was designed for coding interlaced images at transmission rates above 4 million bits …
MPEG-1 Audio - Carnegie Mellon University
https://course.ece.cmu.edu/~ee899/lecture8.pdf
– Layer I and II – Layer III – Frame structure and packetization 18-899/Spring 1998/Chen MPEG-1 Audio • ISO/IEC 11172-3 (1988~1991) • First high quality audio compression standard • CD quality two-channel audio at 256 kbits/s – CD: 44.1 kHz × 16 bits × 2 = 1.411 Mbits/s Frequency Band (Hz) Sampling Rate Bits per Sample Raw ...
Audio | MPEG
https://mpeg.chiariglione.org/standards/mpeg-2/audio
Layer II requires bit rates in the range of 192 to 256 kb/s for near CD quality. A Layer II decoder can also decode Layer I bitstreams. MPEG-1 Layer 3 (or MP3) is a 1- or 2-channel perceptual audio coder that provides excellent compression of music signals. Compared to Layer 1 and Layer 2 it provides a higher compression efficiency.
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