Free modulation software for windows

Chain Modulator LE is a sound editor which will put together four Rings Modulators (connecting and modulating them).
Main features:
- 4 Ring modulators, each one with a LFO modulation;
- Various algorithms, that connect the oscillators in different ways;
- A global LFO;
- Pan phase control over the FX
- Smooth option.
Version restrictions:
- only work with Mono files, max 20 seconds sounds, etc, but you can save the resulting sounds, so really you can use the LE version in your daily musical work.

A flexible allround delay effect in VST format. Retro Delay was designed to be a flexible allround delay effect in VST format. It has the character and sound of a vintage delay unit but features many modern options. Besides delays, it can produce a wide range of modulation, chorus, flanger and phaser effects.
Main features:
- Independent left and right channel delay lines
- BPM synced or manual times (up to 6 seconds)
- Forwards or backwards delays
- X-feedback
- Ping-pong delays
- 1 feedback pass, there will always be 1 feedback
- Optional negative feedback for phaser/flanger effects
- Optional short delay times for phaser/flanger effects
- Integrated automatic limiter
- 2 BPM synced LFOs 1 modulates filter cutoff, the other the delay time (only available for forwards delay)
- 4 LFO modes, sine, triangle, ramp, envelope follower
- LFO, left/right channel inverse options
- 24dB/oct resonant filter placed in the feedback path
- Switchable lowpass, bandpass, highpass, lowshelf and highshelf mode.
- Saturation
- Saturate and limit parameters
- 2 different types
- Old-school spring reverb
- Size, color and mix parameters
- Optional mono mode
- Fade out option, when using high feedback setings
- Fade out time parameter
- Pitchbend wheel, for smooth delay time changes
System requirements:
- VST Host System

SpaceTheremin is a mouse-controlled theremin tool . Unlike a standard analog theremin, which typically has a sinewave oscillator and some basic vibrato, SpaceTheremin lets you choose from six different oscillator types (sine, square, triangle, sinc, saw, and pulse). The same waveforms can also be used for vibrato.
SpaceTheremin has an adjustable pitch range and checkboxes that let you select whether the pitch and volume ranges are logarithmic or linear.
Use of the vibrato can result in some incredibly freaky and bizarre sounds. Set the vibrato depth (in percent) and adjust the vibrato frequency via the slider to hear the effects. A vibrato depth of 50% and a triangle waveform gives an interesting sound, for example.
Although the vibrato frequency ranges from 0.1 to 12.0 Hz in 0.1 Hz increments, checking the "modulation" box changes the range maximum to 8000. Moving this slider into the audible frequency range (20Hz and up) allows you to get strange two-oscillator frequency modulation sounds.
Another neat trick is to use the tab and arrow keys to adjust parameters while playing tones with the mouse. For instance, if the waveform is selected, the arrow keys will change waveforms in mid-tone for an interesting efect. You can also do the same with the vibrato waveform. Adjusting the vibrato frequency via the keyboard can also be handy.
SpaceTheremin is more for generating strange sounds than for playing actual music. As such, you may get some really horrible noises out of it. We would be incredibly impressed if anyone managed to play a tune with it, even if it were something as simple as "twinkle twinkle little bat".
SpaceTheremin is freeware, but we welcome donations if you find the program useful or just want to encourage us to create more free software.

The Proxima Controller is an application that allows you to use the mouse and computer keyboard to play external MIDI devices such as synthesizers and tone generators. It is also possible to play internal devices if they are designed to respond to MIDI messages (for example, the Microsoft GS Wavetable SW Synth). This application makes no sounds of its own and instead relies on the MIDI devices it is controlling to produce sound.
It supports bank and patch changes, transmits on MIDI channels 1-16, includes pitch and modulation sliders, and has five octaves of control.