engleski

Equalization of a PC Audio Card

The main goal of this paper was the equalization of an inexpensive PC audio card and the application of a PC computer as a storage device for the sound pressure and vibration measurements. Since magnitude response of the audio card is not flat in the desired frequency band, a finite impulse response (FIR) digital filter was designed and implemented in order to equalize the overall response of the audio card. In the middle frequency range, least squares linear phase equalizer performs better results, but for the low frequencies the Parks-McClellan equalizer is superior.

equalization; FIR filters; audio cards

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