Digital Audio Circuits: Computer Simulations and Listening Tests

Digital Audio Circuits: Computer Simulations and Listening Tests

L. D. J. Eggermontand P. J. Berkhout

Digital audio technology has arrived- we now have digital recording on tape and on the Compact Disc .We should now be able to enjoy a great improvement in quality.Representing the sound signal by a series of digits and recording it in this form make it possible to choose the level of accuracy required.In practice,of course,it is necessary to compromise between the desired accuracy on the one handand the size ,speed and dissipation of the circuits on the other. At Philips Research Laboratories in Eindhoven a computersystem has been installed and a listening room built for the specific purpose of simulating digital signal processing on a computer and subjectively appraising the audible result. in this way it is the ear that ultimately decides how many bits are needed in each signal processing step in order to reach the high quality that is possible with digital audio technology

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