A fixed-point DSP implementation for a low bit rate vocoder

被引：0

作者：

Yao, FY ^{[1
]}

Li, BZ ^{[1
]}

Zhang, M ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Met, Microelect Branch, Shanghai 200233, Peoples R China

来源：

1998 5TH INTERNATIONAL CONFERENCE ON SOLID-STATE AND INTEGRATED CIRCUIT TECHNOLOGY PROCEEDINGS | 1998年

关键词：

D O I：

10.1109/ICSICT.1998.785897

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Fixed-point DSP implementation of the decoder and the synthesizer of a real time vocoder with 1.4 kbps bit rate has been accomplished instead of the usual realization of low bit rate vocoder in floating paint DSP, Replacing floating point values with fixed-point ones and other approaches have been adopted to reach a real time solution, The implemented fixed-point decoder and synthesizer run at 11.3 MIPS on the average and occupy 1,246 words of program memory, 1,338 words of table ROM and 814 words of RAM in a 40 MHz TMS320C50 DSP chip. The results indicate the possibility to implement the whole vocoder with low cost fixed-point DSP.

引用

页码：365 / 368

页数：4

共 50 条

[1] Fixed-point DSP implementation for a low bit rate vocoder
Yao, Fengying
Li, Bizhou
Zhang, Min
International Conference on Solid-State and Integrated Circuit Technology Proceedings, 1998, : 365 - 368
[2] Implementation of Turbo decoder implemented on a 32-bit fixed-point DSP
Jiang, J.
Wang, L.-F.
Zhang, P.
Hu, J.-D.
Beijing Youdian Xueyuan Xuebao/Journal of Beijing University of Posts And Telecommunications, 2001, 24 (01): : 12 - 16
[3] Implementation of turbo decoder implemented on a 32-bit fixed-point DSP
Jiang, J.
Wang, L.F.
Zhang, P.
Hu, J.D.
Beijing Youdian Daxue Xuebao/Journal of Beijing University of Posts and Telecommunications, 2001, 24 (01): : 12 - 16
[4] Design and DSP Implementation of Fixed-Point Systems
Martin Coors
Holger Keding
Olaf Lüthje
Heinrich Meyr
EURASIP Journal on Advances in Signal Processing, 2002
[5] Design and DSP implementation of fixed-point systems
Coors, M
Keding, H
Lüthje, O
Meyr, H
EURASIP JOURNAL ON APPLIED SIGNAL PROCESSING, 2002, 2002 (09) : 908 - 925
[6] DSP EDUCATION BY FIXED-POINT IMPLEMENTATION & MEASUREMENT
Cadena, Jorge
Beex, A. A.
2015 IEEE SIGNAL PROCESSING AND SIGNAL PROCESSING EDUCATION WORKSHOP (SP/SPE), 2015, : 295 - 300
[7] Implementation of MPEG-2 AAC on 16-bit fixed-point DSP
Wang, Hui
Xu, Wenbin
Dong, Xin
Li, Chuanzhen
Yu, Wenhua
2006 IEEE ASIA PACIFIC CONFERENCE ON CIRCUITS AND SYSTEMS, 2006, : 1903 - +
[8] 1.8 kbps MBE-LPC vocoder implemented by fixed-point DSP
Li, Yongming
Chen, Hongyi
Zhu, Yiting
Pan Tao Ti Hsueh Pao/Chinese Journal of Semiconductors, 2000, 21 (08): : 803 - 809
[9] FIXED-POINT TRUNCATION ARITHMETIC IMPLEMENTATION OF A LINEAR PREDICTION AUTOCORRELATION VOCODER
MARKEL, JD
GRAY, AH
IEEE TRANSACTIONS ON ACOUSTICS SPEECH AND SIGNAL PROCESSING, 1974, AS22 (04): : 273 - 282
[10] $5.25 buys a 16-bit fixed-point DSP
不详
COMPUTER DESIGN, 1996, 35 (09): : 112 - 112

← 1 2 3 4 5 →