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2010•Unpublished venueRequires access

The filter in the DAC of audio processing

SongYu, Lihua

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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.

About this research paper

What this paper is about

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.

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Method / approach

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Available 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.

Key concepts: Computer science, Filter (signal processing), Filter design, Waveform, MATLAB, Finite impulse response, Sampling (signal processing), Noise (video)

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