Title :
Pulse width and position modulation for fully digital audio amplifier
Author_Institution :
Shikumi-Coll., Nagoya Inst. of Technol., Nagoya
Abstract :
A modified pulse width modulation approach is proposed. The pulse position is modulated as well as the pulse width to have a higher resolution of the modulation. Employing a noise shaping filter with a state-space form utilizing the sliding mode scheme enables the proposed approach. The fully digital audio amplifier is selected as an application to realize a high resolution effectively.
Keywords :
audio-frequency amplifiers; filters; pulse position modulation; pulse width modulation; digital audio amplifier; noise shaping filter; pulse position modulation; pulse width modulation; Digital modulation; Filters; Frequency; Noise reduction; Noise shaping; Pulse amplifiers; Pulse width modulation; Quantization; Signal resolution; Space vector pulse width modulation;
Conference_Titel :
Circuits and Systems, 2008. ISCAS 2008. IEEE International Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-1683-7
Electronic_ISBN :
978-1-4244-1684-4
DOI :
10.1109/ISCAS.2008.4541762
