Single- or dual-input audio amplifier/router/mixer with adjustable channel gains specified in decibels (dB). Each channel can be independently muted or inverted (i.e. have its sign reversed). NOTE: A gain specified in dB, denoted GdB, corresponds to the linear gain (i.e. the amplitude multiplication factor), denoted G, according to the formula: G dB = 20 log10 G. The logarithmic gain is most commonly used in audio since the human hearing response is logarithmic (in terms of perceived amplitude differences).
Signals are amplified (by muliplication by the appropriate linear gain factors), summed, and routed, using floating-point arithmetic throughout.
