Free Music Software: Ambience is reverb effect plug-in for Windows and Mac (VST/AU; 32bit/64bit) that, according to its creator, “rivals the quality of the best commercial reverbs.”

Check out the demo and decide for yourself. You can download it via Smartelectronix.com. Details below.

Features:

• Separate dry/wet controls (set direct to -inf to use as a send effect.
• Reverb time & room size parameters.
• Predelay to set the amount of delay between the direct sound and the onset of the first echoes.
• Width control for setting mono/wide stereo.
• Quality knob for lower CPU usage (is less quality).
• Variation button creates a new variant of the same room.
• Damping section for bass and treble (control the decay time).
• EQ section for filtering frequencies.
• Gating allows the reverb to follow the dynamics of the audio input.
• Hold button freezes current sound.
• Diffusion for subtle effect on the sound. It is especially noticable with small room sizes.

via myVST