English Tech/Engineering Electronics / Elect Eng sound signal processing

A convolution reverb is essentially a "room modeler" that can help drummers especially to sweeten up their tone by adding in sampled room acoustics and reverberation. What convolution reverbs offer are replications of acoustic spaces enhanced with algorithmic reverberation with controllable parameters. A convolution reverb **works off of ** the impulse responses of a room, offering a natural sounding ambience by capturing the response, removing the transient, and adding the decay. It emulates various rooms, allowing you to create the illusion that your drums were recorded some place spiffy instead of, say, your cousin's garage.

Could this probably mean "works regardless of" or something like that?
I'll appreciate any suggestions.