ECE6614_MMC3 - Multimedia Communications: Speech...

Info iconThis preview shows pages 1–21. Sign up to view the full content.

View Full Document Right Arrow Icon
Multimedia Communications: Speech Compression mmc3.01
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Speech Waveforms
Background image of page 2
4-Bit PCM Coder
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Error in 8-Bit PCM Coder
Background image of page 4
Errors in 1,5,8-Bit PCM Coders
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
SNR: Uniform Quantization
Background image of page 6
…SNR: Uniform Quantization
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Autocorrelation Function
Background image of page 8
First-Order Linear Prediction: LPC (1)
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Differential PCM (DPCM) Coder
Background image of page 10
…Differential PCM (DPCM) Coder
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
…Differential PCM (DPCM) Coder
Background image of page 12
Prediction Gain
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Backward-Adaptive 3-Bit Quantizer
Background image of page 14
Backward-Adaptive Predictor
Background image of page 15

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Forward-Adaptive Predictor
Background image of page 16
Yule-Walker Equations: LPC (N)
Background image of page 17

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Spectrum and Pitch Prediction
Background image of page 18
Waveform Coding VS Synthetic Coding By using advance prediction techniques, waveform coders can perform as good as R=2 (16 kbps) To improve further, need to move from coding sample-to-sample basis, to synthetic coders Synthetic coders does compression at block level ,thus giving a compression level as good 2-8 kbps LPC (2-4 kbps), CELP (4-8 kbps)
Background image of page 19

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
LPC Modeling of Speech Spectrum
Background image of page 20
Image of page 21
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/12/2010 for the course ECE 6614 taught by Professor M during the Spring '10 term at Georgia Institute of Technology.

Page1 / 29

ECE6614_MMC3 - Multimedia Communications: Speech...

This preview shows document pages 1 - 21. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online