PEEPERS: Sound Files for FileMix and FileMixAuto (2012) Realtime Csound5 (all platform) version Art Hunkins abhunkin@uncg.edu www.arthunkins.com Spring peepers are small frogs common throughout the eastern USA and Canada. They are typically found in forests and wetlands in large numbers. The source recordings were made in a neighborhood of Durham, North Carolina by Dave Hunkins, son of the "composer." They were captured at a sample rate of 22050, so there is no particular reason for FileMix(Auto) to be run at the default 44100 rate (although it may be). The Sample Rate (SR) is easily changed to 22050 in any of the FileMix(Auto) utilities. These files, labeled soundin.1 through soundin.4, must be placed in the directory from which FileMix (FileMixAuto) is run. Durations of the soundin loops vary from 17.5 seconds (the isolated single peeps of soundin.1) to 38 seconds. Soundin.1 and 4 are centered, while 2 is panned substantially left, and 3 to the right. Peepers is primarily suited to FileMix4 and FileMix4ASC; it is not recommended for FileMix (or FileMixASC). The files are especially appropriate for *single-parameter* rendering, where track amplitudes are varied and sounds are otherwise unmodified. In all cases, *MIDI* control will result in far subtler variation of amplitude and other levels than will the ASCII keyboard. The files work well in FileMixAuto also. Particularly recommended are the suggested *random* settings; however, Volume 1 (only) should be set to 7 (.7) instead of 10 (1). Needless to say, whatever the FileMix version, all setting changes should be slow and tempered. For further explanatory notes, see the FileMix.txt that accompanies FileMix/FileMix4 for Csound5 (at www.arthunkins.com), and the FileMixAutoReadMe included with FileMixAuto/Sugar Activity version (available directly from: www.arthunkins.com/FileMixAutoReadMe.txt).