U.K.-based LiquidSonics offers “charityware” versions of their Reverberate convolution reverb and Filtrate linear-phase paragraphic EQ. What is “charityware?” It is essentially a free download; but ...

Linear Time-Invariant (LTI) Systems (5 lectures): The convolution sum; the convolution integral; properties; difference and differential equations. 3. Fourier Series Representation of Periodic Signals ...