| 摘要 |
A nonlinear processor for distorting audio signals having an input stage ( 15 ) that is arranged to split an audio input signal ( 13 ) into two signal paths and then a pair of asymmetric distortion stages ( 17, 19 ), one in each signal path, with non-equal negative and positive saturation limits, so as to produce opposite polarity mean signal levels at their outputs in each signal path, and which produce a smooth transition from linear to nonlinear behaviour. Following the asymmetric distortion stages ( 17, 19 ) is a pair of AC-coupled symmetric distortion stages ( 21, 23 ), one in each signal path, and an output stage ( 25 ) that is arranged to add the two nonlinearly distorted signals from the symmetric distortion stages to generate an audio output signal ( 27 ) that demonstrates a smooth transition from linear behaviour to the production of crossover-like artifacts.
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