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Suppression of Slew Rate and Transient IM Distortions in Audio Power Amplifiers

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The dynamic and steady-state inter-loop responses of a negative feedback amplifier are examined to identify causes of the transient IM and slew-rate distortions. A technique for suppressing them is described which consists of a frequency compensation network in the feedback loop in combination with a single-pole low-pass filter.

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AES - Audio Engineering Society