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A 36 MHz CMOS fixed-point G.728 low delay CELP integrated decoder-encoder

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4 Author(s)
Soon, W.B.H. ; Siemens Components Pte Ltd., Singapore ; Goyal, S. ; Liu Chong Hsu ; Yeo Lik Wee

The highly integrated JADE (Joint Audio Decoder-Encoder) device implements audio compression using either G.711, G.722 or G.728 compression algorithms. The integration of peripherals, interfaces and memories with a fixed point DSP (digital signal processor) to implement complex speech algorithms such as G.728, opens up the market for low cost digital telecommunications applications. Using the G.728 Low Delay Code Excited Linear Prediction (LD-CELP) algorithm, the device compresses/decompresses a digitized PCM (64 kbps) or linear (128 kbps) voice signal to/from a 16 kbps bit stream. The device has been fabricated in a 0.5 μm n-well CMOS process

Published in:

Custom Integrated Circuits Conference, 1996., Proceedings of the IEEE 1996

Date of Conference:

5-8 May 1996