Sound Recordings 6.5C7

Revise list and examples to read:

monophonic

stereophonic

quadraphonic

1 CD (56 min.) : stereophonic

1 sound tape reel (about 60 min.) : analog, 7½ ips, 2 track, monophonic

2 sound discs : analog, 33 ^1/3 rpm, monophonic, stereophonic