Title :
An 8-channel, area-efficient, low-power audio sampling rate converter
Author :
Kuang, Haipeng ; Wang, Dejiang ; Zhou, Gang ; Liu, Yanyan
Author_Institution :
Changchun Inst. of Opt., Fine Mech. & Phys., Chinese Acad. of Sci., Changchun, China
Abstract :
A novel 8-channel, area-efficient, low-power audio sampling rate converter is proposed in this paper, conversion ratio is 2:1 and 4:1. Filter design and implementation are the key points for the converter. First, excluded data and coefficients memories, adopting multiplier-free arithmetic unit (AU) and rounding methods allows its realization in a cell area of only 0.038 mm2 in 0.18 mum technology; next a new timing division multiplexer (TMD) scheme lowers clock working rate to minimum in order to save power; third, a novel memory addressing scheme reduces 20% data memory at least. Experiments show proposed methods could not only saved hardware resources but also reduce power consumption, so it is very suitable for consumer electronics.
Keywords :
SRAM chips; clocks; consumer electronics; convertors; digital arithmetic; filters; low-power electronics; multiplying circuits; signal sampling; time division multiplexing; 8-channel area-efficient low-power audio sampling rate converter; SRAM; clock working rate; consumer electronics; data memory; filter design; memory address; multiplier-free arithmetic unit; power consumption; rounding method; timing division multiplexer; Arithmetic; Clocks; Consumer electronics; Energy consumption; Filters; Gold; Hardware; Multiplexing; Sampling methods; Timing; Area Efficient; Low Power; Sampling Rate Converter;
Conference_Titel :
Electronic Measurement & Instruments, 2009. ICEMI '09. 9th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3863-1
Electronic_ISBN :
978-1-4244-3864-8
DOI :
10.1109/ICEMI.2009.5274582
