Reverb 5.3

Reverb is a Macintosh application that allows the user to construct
stereo delays, echo effects, chorusers, and reverberators for realtime
performance on an Audiomedia, Sound Accelerator, or Pro Tools DSP
card.  The Audiomedia, Sound Accelerator, and Pro Tools DSP cards are
based on the Motorola 56000 digital signal processor, and are all
products of Digidesign, Inc. If you do not have a DSP card, you can
still use Reverb to process sound files in non-realtime.

Reverb provides the user with a standard multiple window text editor.
Reverb programs are entered into a text window using a simple command
language. If you have a DSP card, the program may be compiled into
DSP56000 code and downloaded into the DSP card for realtime execution.
In this case, the Reverb program specifies exactly how the audio input
to the DSP card is processed to form the audio output.  The user may
quickly switch between different Reverb programs. If you do not have a
DSP card, the Reverb program can be used to process an existing sound
file on disk, creating a new sound file.  It is not possible to
process sound files through a DSP card in realtime, however.

The programming language has been optimized for reverberator
construction. Reverb programs are specified by attaching operators to
a large digital delay line.  The set of instructions includes basic
operations such as move, add, subtract, multiply, and more advanced
operations such as finite impulse response (FIR), comb, allpass, and
lowpass filters.  Also, the user may define a number of oscillators
that can be used to modulate pitch or amplitude. All program
parameters can be controlled from MIDI in realtime using MIDI control
change messages, and Reverb programs may be selected using MIDI
program change messages. The programming language includes macros
and mathematical expressions to facilitate realtime control.

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