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Reply To: single sample feedback in VSig

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Puppeteer
Participant

A single pole filter shouldn’t require feedback, though admittedly .my math is a little rusty in that area, but my memory tells me that filter resonance requires feedback and can’t be achieved in a single pole filter.

My understanding is that a feedback path will turn a single pole filter into a 2 pole filter when the maths or block diagram is simplified to a single transfer function.