基于MATLAB语音信号的A律13折线PCM编解码的设计与分析(4)

2018-12-29 18:05

Operating power measured at room temperature typically is 30 mW. This is low enough that a standby mode is not deemed necessary. The European A-law version of the codec is a metal mask variation of this product. ACKNOWLEDGMENT

The authors wish to thank Dr. D. Sealer for his helpful suggestions and critique of this article. REFERENCES

[1] American Telephone & Telegraph, The D3 Channel Bank Specification, Oct. 14, 1974, issue 2.

[2] Y. P. Tsividis, P. R. Gray, D, A. Hodges, and J. Chacko, Jr., “A segmented v-25 5 law PCM voice encoder utilizing NMOS technology:’ IEEE J. Solid-State Clrcuit~, VOL SC-I 1, pp. 740-747, Dec. 1976.

[3] J. McCreary and P. R. Gray, “All MOS charge redistribution analog to digital conversion techniques, Part 1,“ IEEE J Solid- State Circuits, vol. SC-10, pp. 371-379, Dec. 1975.

[5] J. B. Cecil, E. M. W. Chow, J. A. Fink, J. E. Solomon, C. G. Svala, and T. Svensen, “A two-chip PCM codec for per-channel application s,” in ZSSCC Dig. Tech. Papers, Feb. 1978, pp. 176-177.

[6] J. M. Huggins, M. E. Hoff, and B. M. Warren, “A single-chip NMOS PCM codec for voice, “ in ISSCC Dig. Tech. Papers, Feb. 1978, pp. 178-179.

G. F. Landsberg and G. Smarandoiu, “A two-chip CMOS codec;’

in ISSCC Dig. Tech. Papers, Feb. 1978, pp. 180-181.


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