DocumentCode
1680757
Title
Filtering of subtractive discrete dither in quantizers: Some new results
Author
Ghosh, A. ; Pamarti, Sudhakar
Author_Institution
Dept. of Electr. Eng., Univ. of California, Los Angeles, Los Angeles, CA, USA
fYear
2013
Firstpage
5790
Lastpage
5794
Abstract
Subtractive dither in quantizers is examined as a means to mitigate quantizer non-linearity. The effects of filtering the dither signal to shape its spectral content outside the signal band while maintaining its benefits are studied in detail. Design strategies for finite impulse response (FIR) filters that accomplish spectral shaping as well as allay quantizer non-linearity are derived theoretically. Simulation results for low/medium resolution quantizers are presented to validate the derived conditions on the filter structures.
Keywords
FIR filters; quantisation (signal); spectral analysis; FIR filters; dither signal filtering; finite impulse response filters; quantizer nonlinearity; spectral content; spectral shaping; subtractive discrete dither; Additives; Finite impulse response filters; Noise; Quantization (signal); Signal resolution; Simulation;
fLanguage
English
Publisher
ieee
Conference_Titel
Acoustics, Speech and Signal Processing (ICASSP), 2013 IEEE International Conference on
Conference_Location
Vancouver, BC
ISSN
1520-6149
Type
conf
DOI
10.1109/ICASSP.2013.6638774
Filename
6638774
Link To Document