Henning Schulzrinne

www1.cs.columbia.edu/~hgs

Homepage for Professor Henning Schulzrinne, Department of Computer Science and Department of Electrical Engineering, Columbia University. Research interests include computer networks, multimedia systems, mobile networks, protocol design and performance analysis.

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Visit www1.cs.columbia.edu/~hgs → On Hacker News May 2014 – May 2014

Science & Space 1 Hardware & Electronics 1

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Explanation of 44.1 kHz CD sampling rate

2014149 points39 comments Hardware & Electronics details

The CD sampling rate has to be larger than about 40 kHz to fulfill the Nyquist criterion that requires sampling at twice the maximum analog frequency, which is about 20 kHz for audio. The sampling frequency is chosen somewhat higher than the Nyquist rate since practical filters neede to prevent aliasing have a finite…