Title :
The filter in the DAC of audio processing
Author_Institution :
Comput. Sci. & Eng. Inst., Changchun Univ. of Technol., Changchun, China
Abstract :
This paper designs a kind of filters used in audio processing of the DAC. Through the study of FIR filter parameters, this paper completed the over-sampling of the audio filter, so that over-sampling rate achieves 128 times. It also use the analysis tools in MATLAB fdatool to design filter. From the simulation waveform of it, the noise of signal ratio is achieved more than 100dB, and it can better suppress pass-band noise.
Keywords :
FIR filters; audio signal processing; interference suppression; DAC; FIR filter; MATLAB fdatool; audio processing; over-sampling; pass-band noise suppression; Attenuation; Clocks; Conductors; MATLAB; Σ-ΔDAC; MATLAB; audio signal; interpolated filter;
Conference_Titel :
Computer, Mechatronics, Control and Electronic Engineering (CMCE), 2010 International Conference on
Conference_Location :
Changchun
Print_ISBN :
978-1-4244-7957-3
DOI :
10.1109/CMCE.2010.5610059
