From Black Cat Systems:
Audiocorder is a program which allows your Mac to act as a sophisticated audio recorder. In one mode, it operates as a volume operated (VOX) audio recorder. This allows you to set the volume that the sound must reach to begin recording, and the volume at which it should end recording. It also allows you to set the trigger length for the start and stop values, which helps you to eliminate recording short bursts of sound or ending the recording process during a short pause (such as in normal speach). Audiocorder may also be programed with a recording schedule, specifying when it should start and stop recording, much like a VCR. It may also be used as a normal manually operated recorder. In addition, it can play AIFF sound files, including those created with other sound programs. Each sound file is stored in AIFF format, a Macintosh standard sound format. The audio is sampled at 11, 22 or 44 kHz, with a sample size of 8 or 16 bits, either monophonic or stereo. The name of each file contains the date and time (down to seconds) the recording began. Audiocorder is used in a wide variety of applications, including digitizing LPs and tapes, recording animals and other natural sounds, and automated recording of radio transmissions.