Title :
Computationally efficient ABS scheme for sinusoidal transform coding of speech
Author :
Agarwal, Nishant
Author_Institution :
Electron. & Commun. Eng., IIT, Roorkee, India
Abstract :
Analysis-by-synthesis (AbS) has been used in a range of medium and low bitrate speech coders to find the parameters that would best reconstruct a given waveform. AbS has been used despite its high computational complexity because it gives accurate results. In this paper, a low complexity analysis by synthesis scheme for a sinusoidal transform coder (STC) has been proposed. The accuracy of results has not been compromised, while reducing the computational complexity from 2.63 MFLOPS (best case) and 22.13 MFLOPS (worst case) to a constant value of 0.46 MFLOPS.
Keywords :
computational complexity; speech coding; speech synthesis; transform coding; analysis-by-synthesis; bitrate speech coders; computational complexity; sinusoidal transform coder; speech sinusoidal transform coding; Decoding; Fourier series; Frequency; Linear predictive coding; Prototypes; Speech analysis; Speech coding; Speech synthesis; Testing; Transform coding;
Conference_Titel :
Signal Processing and Information Technology, 2003. ISSPIT 2003. Proceedings of the 3rd IEEE International Symposium on
Print_ISBN :
0-7803-8292-7
DOI :
10.1109/ISSPIT.2003.1341226
