Voltage controlled filter: Difference between revisions
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* Formant filters - raise multiple peaks, often in such a way that they mimic the human voice. |
* Formant filters - raise multiple peaks, often in such a way that they mimic the human voice. |
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* State variable filters - e.g. include simultaneous low-pass, high-pass and band pass outputs as well as voltage controllable cut off frequency and resonance (Q) |
* State variable filters - e.g. include simultaneous low-pass, high-pass and band pass outputs as well as voltage controllable cut off frequency and resonance (Q) |
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* Comb filter - adding a delayed version of a signal to itself, causing constructive and destructive interference. |
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There are many ways to implement most filters, and each has its own specific audio characteristics or flavour. Some common features across most filter types include: |
There are many ways to implement most filters, and each has its own specific audio characteristics or flavour. Some common features across most filter types include: |
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* A cut-off frequency - the frequency at which the filter begins to remove frequencies. This is often voltage-controllable and can changes over time (e.g. controlled by an [[Envelope generator|envelope]], or an [[Low frequency oscillator|LFO]]). |
* A cut-off frequency - the frequency at which the filter begins to remove frequencies. This is often voltage-controllable and can changes over time (e.g. controlled by an [[Envelope generator|envelope]], or an [[Low frequency oscillator|LFO]]). |
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