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US 5,489,871 AGranted
Method and circuit for reducing distortion in a filtered signal
AssigneeAudio Products International Corp.
InventorsIan Paisley, Stefan R. Hlibowicki
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AssigneeAudio Products International Corp.
InventorsIan Paisley, Stefan R. Hlibowicki
Estimating the term…
A method and circuit for achieving reduced signal distortion in a filtered signal. The method involves connecting an input signal to a main path and a side chain path. The signal carried on the side chain path is then processed to generate a complementary signal which, when combined with the input signal carried by the main path, will produce a target output signal. The circuit includes a side chain processing stage, having a filter stage and a first subtraction stage, and a final processing stage. The input signal is carried on the side chain path to a filter path and a processing path. The signal carried on the filter path is filtered through the filter stage to generate a first filtered signal. The first filtered signal is then subtracted from the input signal on the processing path at the first subtraction stage to generate a complementary processed signal. The complementary processed signal is then subtracted from the input signal on the main path to generate the target output signal. The method and circuit achieve reduced signal distortion by performing the filtering functions on the side chain path and only subjecting the output signal to a single processing stage (at the final processing stage).
A method of processing an input signal by a desired target transfer function, to generate an output signal, said method comprising the steps of:
A method of processing an input signal by a desired target transfer function, to generate an output signal, said method comprising the steps of:
A circuit for processing an input signal by a desired target transfer function, to generate an output signal, the circuit comprising:
A circuit for processing an input signal by desired target transfer function, to generate an output signal, the circuit comprising:
Dependencies are inferred from the claim text.