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Performance of dual tone multi-frequency signal decoding algorithm using the sub-band non-uniform discrete Fourier transform on the ADSP-2192 processor
- Source :
-
Microprocessors & Microsystems . Nov2003, Vol. 27 Issue 10, p501. 10p. - Publication Year :
- 2003
-
Abstract
- Efficient decoding of Dual Tone Multi-Frequency (DTMF) signals can be achieved using the sub-band non-uniform discrete Fourier transform (SB-NDFT). In this paper, the details of its implementation on the ADSP-2192 processor are put forward. The decoder performance in terms of its computational complexity and computational speed of this algorithm, implemented on the ADSP-2192 processor, are compared for different implementations of the SB-NDFT algorithm, with and without optimization for the chosen DSP, ADSP-2912. The algorithm is tested for various types of input signals on the DSP and these are compared with the results from Matlab®. Problems on using other DTMF decoding algorithms that use the conventional discrete Fourier transform (DFT) and the non-uniform discrete Fourier transform (NDFT) are also addressed. [Copyright &y& Elsevier]
- Subjects :
- *FOURIER transforms
*DECODERS (Electronics)
*ALGORITHMS
*FOURIER analysis
Subjects
Details
- Language :
- English
- ISSN :
- 01419331
- Volume :
- 27
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- Microprocessors & Microsystems
- Publication Type :
- Academic Journal
- Accession number :
- 10926501
- Full Text :
- https://doi.org/10.1016/S0141-9331(03)00066-8