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IEICE TRANSACTIONS on Fundamentals

A Low-Power DSP Core Architecture for Low Bitrate Speech Codec

Hiroyuki OKUHATA, Morgan H. MIKI, Takao ONOYE, Isao SHIRAKAWA

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Summary :

A VLSI implementation of a low-power DSP core is described, which is dedicated to the G. 723. 1 low bitrate speech codec. A number of sophisticated DSP microarchitectures are devised mainly on dual multiply accumulators, rounding and saturation mechanisms, and two-banked on-chip memory. The main attempt is focused on lowering the clock frequency, and therefore on reducing the total power consumption, at the cost of a fairly small increase of chip area. The proposed DSP architecture has been integrated in the total area of 7. 75 mm2 by using a 0. 35 µm CMOS technology, which can operate at 10 MHz with the dissipation of 44. 9 mW from a single 3 V supply.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E81-A No.8 pp.1616-1621
Publication Date
1998/08/25
Publicized
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DOI
Type of Manuscript
Special Section PAPER (Special Section on Digital Signal Processing)
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