Title :
Digital Non-Subtractive Dither: Necessary and Sufficient Condition for Unbiasedness, with Implementation Issues
Author_Institution :
Dept. of Meas. & Inf. Syst., Budapest Univ. of Technol. & Econ.
Abstract :
Dither theory gives the condition of unbiasedness for non-subtractive dither, which can only be fulfilled with continuous-amplitude dithers. However, within a computer or a DSP, only digital dither can be used. A condition was given for digital dither, however, the condition and the proof was only approximate. This paper makes the statement precise, and gives a full proof for unbiasedness. Implementation issues are also discussed
Keywords :
quantisation (signal); signal processing; continuous-amplitude dithers; digital nonsubtractive dither; digital signal processing; dither theory; Digital signal processing; Digital signal processors; Information systems; Input variables; Instrumentation and measurement; Probability density function; Quantization; Random variables; Roundoff errors; Sufficient conditions; Dither; bias; digital signal processing; necessary and sufficient conditions; quantization; roundoff error;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2006. IMTC 2006. Proceedings of the IEEE
Conference_Location :
Sorrento
Print_ISBN :
0-7803-9359-7
Electronic_ISBN :
1091-5281
DOI :
10.1109/IMTC.2006.328331
