DocumentCode :
3270674
Title :
ASIC design for the efficient computation of line spectral frequencies using Chebyshev polynomial series
Author :
Reyno, David L. ; Head, Linda M. ; Ramachan, Ravi P.
Author_Institution :
L-3 Commun., New York
fYear :
2007
fDate :
5-8 Aug. 2007
Firstpage :
1465
Lastpage :
1468
Abstract :
Various methods for the efficient computation of line spectral frequencies (LSFs) have been proposed to address the computationally intensive task of isolating the roots of high-order polynomials in linear predictive (LP) systems. An ASIC implementation of one such algorithm to compute LSFs has been developed, simulated and synthesized. The design, expressed entirely in VHDL, is intended for implementation into larger speech processing systems. The design developed is suitable for speech coding applications requiring a 10th order LP analysis and for speaker recognition applications which need a 12th order analysis. The resulting efficient design is of low complexity, modular, optimized for speed and area and can be used in larger speech processing systems to offload main application processors and DSPs. When the designed ASIC is part of a speaker identification system, the same accuracy as a software implementation is obtained.
Keywords :
audio coding; audio signal processing; hardware description languages; integrated circuit design; speaker recognition; speech processing; ASIC design; Chebyshev polynomial series; DSP; VHDL; high-order polynomials; larger speech processing systems; line spectral frequencies; linear predictive systems; speaker identification system; speaker recognition; speech coding; Application specific integrated circuits; Chebyshev approximation; Computational modeling; Frequency; Polynomials; Speaker recognition; Speech analysis; Speech coding; Speech processing; Speech synthesis;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Circuits and Systems, 2007. MWSCAS 2007. 50th Midwest Symposium on
Conference_Location :
Montreal, Que.
ISSN :
1548-3746
Print_ISBN :
978-1-4244-1175-7
Electronic_ISBN :
1548-3746
Type :
conf
DOI :
10.1109/MWSCAS.2007.4488820
Filename :
4488820
Link To Document :
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