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-
-
- Kevin's Amazing Echo Machine
- Written and Copyright (c) 1988, 89 by Kevin Kelm
- (719) 392-1023, CIS 71071,2726
- but in the Public Domain
- --------------------------------------------------
-
- WHAT'S THE BIG DEAL?
-
- SuperEcho does something I've never seen another program do: given an
- audio input to the left channel of an audio digitizer in the parallel port,
- SuperEcho will perform a variety of LIVE special effects on that signal,
- including echos and pitch changes without speed changes!
-
- ---------------------------------------------------------------------------
-
- WOW! HOW DO I MAKE IT WORK?
-
- There are a 12 gadgets that allow you to change to parameters of what
- is going on. The are listed below with their descriptions.
-
- # VOICES (1...4): Lets you set how many channels will be involed.
-
- BUFFER (8..65535): You can specify how much memory the buffer is to take
- up. Pitch changes should be done with a small buffer,
- say 127, and echos can be made with larger (16384+)
- buffers.
-
- FREQ (L|R)(1|2) (124..600): These are the left/right channels 1 and 2
- frequency settings. A low number means a high-
- pitched voice, and a high number means a deep
- voice.
-
- ECHO DELAY: The number to count to before starting each channel. This
- (0...65535) creates the separation between each channel's playback which
- creates echos. A low number means a short separation and a
- high number means a long separation.
-
- VOLUME(L|R)(1|2): These sliders independently set the volume of each
- channel. Fading echos can be made with decreasing
- volumes.
-
- SAMPLE DELAY (0..20): This lets you set the number the computer will count
- to before each sampling of the digitizer. Low numbers
- mean better signal quality, while larger numbers can
- shift the frequency of playback higher (sort of like
- an octave shift).
-
- GO! : Clicking this will start the echo effect with the current parameters.
- The system will seem to freeze, but as soon as your mouse pointer
- stops moving (it may take a sec to get set up), SuperEcho will start
- processing signals. You can press the left mouse button to stop.
-
- QUIT: Exit SuperEcho.
-
- ---------------------------------------------------------------------------
-
- WOW! TELL ME MORE!
-
- I have my own set of favorite parameters. One is the default, which
- creates a LOW, BOOMING ECHOING voice, which does WONDERS to scare the
- kiddies on Halloween! I like to hook the digitizer up to a microphone and
- speak directly in. Another fun activity is to plug in a radio, say a talk
- show, and set up the parameters to be #V=1, Buf=4095, FreqL1=160 or 170,
- Samp=0. I think that's right. This will make the radio announcer
- st-st-stutter like Max Headroom! with small frequencies, like 124, you can
- create the "Mooooommmmmmyyyy!" voice from the TV in Poltergeist! Also try
- mixing a range of frequencies, like 124, 200, 160 and 180 and a small buffer
- to sound like a whole group of people!
-
- Anyway, have fun and enjoy! Above all, spend some time with SuperEcho,
- plugging different values in and trying new things. I'm sure there are even
- some combinations that **I** haven't even heard. Try to keep a running list
- of your favorite parameters. It would be great if someone came up with a
- good list of effects and their parameters!
-
- Who out there is ready to use channel modification modes, etc. to make
- robot effects? What ELSE can you come up with? I'd love to see the results
- of YOUR audio hacks!
-
- --------------------------------------------------------------------------
-
- If you like, I can be contacted at the following address:
-
- Alternate Realities
- c/o Kevin Kelm
- 7080 Roaring Springs Avenue
- Colorado Springs, CO
- 80817
-
-