insts.jg -------------- This package of instruments are written and maintained by John Gibson. Many of them are original; some are based on code or ideas by others; a few are reworkings of instruments by others. Some require objlib (in this directory), which is a C++ unit generator library based on Perry Cook's STK, the Objective C library in NeXT-era cmix, and some code from csound and clm. BUTTER - Butterworth filter with low-pass, high-pass, band-pass and band-reject types, and time-varying cutoff (or center) frequency and bandwidth. COMPLIMIT - a compressor / limiter with adjustable lookahead, envelope times, threshold and compression ratio CONVOLVE1 - convolution instrument DECIMATE - Sample bit-depth reducer, for nasty noisy effects. DISTORT - Distortion (very primitive at the moment) ELL - an old cmix favorite, dusted off and RT-ified ... cascaded IIR filters with built-in elliptical design program. EQ - Equalizer with peak/notch, shelving and high/low pass types, and time-varying frequency, Q and filter gain. FILTSWEEP - two-pole filter with time-varying center freq. and bandwidth FLANGE - a flanger with choice of IIR comb or FIR notch filter. Serves as a demonstration of some of the unit gen objects. FOLLOWER - three envelope-following instruments, which use the amp envelope of an input to: 1. control the amp envelope of another sound, 2. control a Butterworth filter applied to another sound, or 3. to gate another sound. FREEVERB - a version of the Freeverb reverberator written by "Jezar" (http://www.dreampoint.co.uk/~jzracc/freeverb.htm). I added pre-delay and adapted it to RTcmix. This is a high quality Schroeder reverb, since it has 8 combs and 4 allpass filters for each output channel, and it's tuned well. This uses about 60-70% of the CPU time that REVERBIT does, for some reason. GRANSYNTH - granular synthesis with extensive real-time control GRANULATE - granulation with extensive real-time control JCHOR - a variation on Lansky's chor program, which sprays a slice of an input file around the stereo field. Some limitations have been removed, and you can transpose the grain. JDELAY - a tweak of the standard RTcmix DELAY program, adding a low-pass filter and dc-blocker (useful for short resonating delay times), among other things. JFIR - an FIR filter with frequency response sampling. Use a makegen to "draw" a frequency response for the filter. JGRAN - a granular synthesis instrument derived from a Cecilia module by Mathieu Bezkorowajny and Jean Piche. Produces grains by wavetable or FM synthesis. MOOGVCF - resonant low-pass filter with time-varying frequency and resonance, based on work by Stilson, Smith and Kellett. MROOM - RTcmix version of the old cmix implementation of F.R. Moore's moving-source room simulation program. You're better off with MMOVE (in insts/std/MMOVE). MULTEQ - version of EQ that lets you connect many EQs in series. MULTIWAVE - additive synthesis instrument with real-time control NPAN - Multichannel pair-wise intensity panner, based on the design described in F. R. Moore's "Elements of Computer Music." (See also QPAN.) PAN - constant gain or constant power stereo panning. QPAN - quad intensity panner configured for four speakers in a square, with the ability to place signal in all speakers, depending on source position. REV - some Schroeder reverbs that are part of the STK package. REVERBIT - RTcmix version of Lansky's reverberator. Added low-pass filter and removed a few limitations. Effective for a moderate amount of roominess. (See also MPLACE in insts/std/MMOVE.) ROOM - RTcmix version of Lansky's (and Garton's, I think) old room simulation. A classic! SHAPE - waveshaping instrument that differs from insts.std/WAVESHAPE in that it can accept input from a bus and offers a different way of performing amplitude normalization. SPECTACLE - a family of spectral processing instruments. SPECTEQ offers FFT-based equalization; SPECTACLE and TVSPECTACLE create spectral delay effects, in which each FFT bin has its own recirculating delay line. SPECTACLE2 improved version of SPECTACLE, with extensive real-time control SROOM - RTcmix version of the old cmix implementation of F.R. Moore's stationary-source room simulation program. You're better off with MPLACE (in insts/std/MMOVE). VOCODE2 - a channel vocoder, which allows input of both carrier and modulator from buses. Modulator controls a bank of band-pass filters that affects carrier signal. VOCODESYNTH - yet another channel vocoder, which synthesizes its output rather than applying time-varying filters to an external carrier signal. WAVY - dual-oscillator wavetable instrument, with various ways to combine the oscillators WIGGLE - simple FM synthesis with a separate glissando function. Cooler than that description makes it sound... denoise - a translation of Mark Dolson's old CARL program, which does frequency-domain noise reduction. Pretty effective for cleaning up files with a moderate amount of constant background noise. NOTE: this is an old-style disk-based instrument (with files opened by input and output, instead of rtinput and rtoutput); no real-time processing.