MPEG Audio Samples Input Data ---------- Sine Waves 100.wav or .aif 100 Hz Sinewave 400.wav or .aif 400 Hz Sinewave 1kz.wav or .aif 1 KHz Sinewave 4kz.wav or .aif 4 KHz Sinewave 15kz.wav or .aif 4 KHz Sinewave All the sine wave samples are exactly 15 seconds long, 16 bit stereo and with a sampling rate of 32 KHz. Sync Signal sync.wav or .aif 10 seconds of zeros and 5 seconds of 1 KHz The sync sample is exactly 15 seconds long, 16 bit stereo and with a sampling rate of 32 KHz. Music music.wav or .aif The music sample is exactly 60 seconds long. The data is 16 bit stereo with a sampling rate of 44.1 kHz. This piece has a selection of music: stings (3), harp (2), brass (3), percussion (3), banjo, guitar & castanets. Output Data ----------- The input data listed above was compressed with the reference decoder provided by the ISO MPEG/audio ad hoc committee on software simulation (November 1992). The following setting were used on the encoder musicin -l 2 -m s -p 2 -d n usage: musicin queries for all arguments, or musicin [-l lay][-m mode][-p psy][-s sfrq][-b br][-d emp] [-c][-o][-e] inputPCM [outBS] where -l lay use layer coding (dflt 2) -m mode channel mode : s/d/j/m (dflt s) -p psy psychoacoustic model 1/2 (dflt 2) -s sfrq input smpl rate in kHz (dflt 44.1) -b br total bitrate in kbps (dflt 384) -d emp de-emphasis n/5/c (dflt n) -c mark as copyright -o mark as original -e add error protection inputPCM input PCM sound file (standard or AIFF) outBS output bit stream of encoded audio (dflt inName+.mpg) The input data type was aif and the sampling rate was chosen to match that of the input data. Each of the above samples was compressed to generate bitstreams at the following rates: 64 kbs, 128 kbs, 192 kbs,256 kbs. Contact me for further information. Scott Diamond \ / Tektronix, Video Networking / \ P.O. Box 500, M.S. 50-480 < s > Beaverton, Oregon 97077-0001 \ / wk: (503) 627-6304 hm: (503) 643-6779 / \ scott.k.diamond@tek.com