Digital Signal Processing Questions & Answers

Digital Signal Processing Questions & Answers 3 General Categories or Signal Processors - Spectral/ Frequency Based (Filters and EQ) - This deals with amplitude. They are related, but not synonymous - Dynamic Range/Amplitude Based (Compressors/Limiters; Expander/Gate) Time Based (Modulation) (Reverb and Delay) DSP (Digital Signal Processing) - - Microprocessor with special hardware and optimized for signal processing. Separate memory and busses for data and program. A rearrangement of binary information. Native VS Host Systems - Host system is an additional device that the processing it is dedicated processor specific to handling all of the audio DSP. Host based systems are preferred over Native based systems. Routing (Serial) - - Serial/Inline The entire signal is processed. - Inserts, daisy chaining, Inline routing options. Inline routing is used to alter a signal. Inserts work both as input and output simultaneously. Routing (Parallel) - - Side chaining. Takes a copy of the portion of the signal to be sent through auxiliary bus. - Splits the signal copy or portion to allow for "wet" and "dry" signals to be mixed in one of two ways: - Auxiliary Sends (least preferred) Dry/Wet mix control on unit. Wet = Processed Dry = Unprocessed Time based = parallel connection. Best if returned to spare channels Key inputs - Expander/ Gates - allow for triggering a processor from an external signal, as opposed to the signal itself. (Side chain input - compressor/limiter) Filter - A circuit that works upon a certain portion of the frequency spectrum, filters generally cut certain frequencies but can, in a sense, produce boost.