Audio & Video on the Web: Audio Quality

Audio Quality Comparison

The same audio clip has been saved at several different quality levels so you can evaluate the effect of sampling rate and format options. You can also adjust the volume and gain when digitizing audio to get the best sound quality possible.

Audio files are provided in Quicktime format. If you want the files in a different format, bug me and I'll try to make them available.Voice files were recorded with a mono microphone so no stereo files are provided.

Music (1) / Voice - File Size - Sampling rate, format

(887k) 44.1 kH sampling rate, 16-bit stereo format

(444k/284k) 44.1 kH sampling rate, 16-bit mono format

(444k) 44.1 kH sampling rate, 8-bit stereo format

(224k/143k) 44.1 kH sampling rate, 8-bit mono format

(449k) 22 kH sampling rate, 16-bit stereo format

(225k/144k) 22 kH sampling rate, 16-bit mono format

(225k) 22 kH sampling rate, 8-bit stereo format

(114k/74k) 22 kH sampling rate, 8-bit mono format

(225k) 11 kH sampling rate, 16-bit stereo format

(114k/74k) 11 kH sampling rate, 16-bit mono format

(114k) 11 kH sampling rate, 8-bit stereo format

(57k/38k) 11 kH sampling rate, 8-bit mono format

(114k) 5 kH sampling rate, 16-bit stereo format

(59k/38k) 5 kH sampling rate, 16-bit mono format

(59k) 5 kH sampling rate, 8-bit stereo format

(30k/20k) 5 kH sampling rate, 8-bit mono format

(1) This music clip is from the "Rice University: The Shepherd School of Music" CD distributed with the President's Report in 1996. "Mozart: Requiem, K. 626 Dies irae" performed by the Rice Chorale and Shepherd School Chamber Orchestra. Used with permission. For more information, contact the Shepherd School of Music at musi@rice.edu.

Comments to Shisha van Horn, shisha@rice.edu.
Classroom Technology Services, Rice University.
Copyright 1997-2002 Rice University
Last updated: Monday, 23-Aug-99 SvH

http://cttl.rice.edu/steps/webav/audioquality.html