GM Arts
Fractal Fanatic
A while back there was a post about trying to recreate the sound of a Flint Tremolo. Here's how to do it properly:
The Flint tremolo alternates between a high pass and low pass filter, still giving the throbbing tremolo effect but with a subtle wah characteristic as well. IIRC the original thread concluded that it was possible with 2 filter blocks, but didn't really sound right. I expect this is due to phase cancellation when these filters combine.
The right way to mix high pass and low pass filters is to use filters designed to be combined ... like the crossover blocks! So use two crossover blocks in parallel with settings shown in the pics. One modulates low frequency level with LFO1A while high frequencies are controlled with opposite modulation phase using LFO1B.
Settings to play with:
Keep the frequency the same for both blocks. 800Hz seemed about right to me for a good effect. For the modifiers that modulate level, set Max to a level that maintains the same perceived volume between effect off and on (I chose +1dB) and set Min to control the depth of the effect - I chose -12dB as a "medium depth" amount
In the LFO, use different waveforms to change the effect - sine gives a smooth change, sine adds a bit of "throb", while square switches between low & high frequencies. Set the frequency to whatever you want, and output phase varies between this "Flint tremolo" at 180 degrees, to normal tremolo at 0 degrees.
Hope this is helpful to someone
The Flint tremolo alternates between a high pass and low pass filter, still giving the throbbing tremolo effect but with a subtle wah characteristic as well. IIRC the original thread concluded that it was possible with 2 filter blocks, but didn't really sound right. I expect this is due to phase cancellation when these filters combine.
The right way to mix high pass and low pass filters is to use filters designed to be combined ... like the crossover blocks! So use two crossover blocks in parallel with settings shown in the pics. One modulates low frequency level with LFO1A while high frequencies are controlled with opposite modulation phase using LFO1B.
Settings to play with:
Keep the frequency the same for both blocks. 800Hz seemed about right to me for a good effect. For the modifiers that modulate level, set Max to a level that maintains the same perceived volume between effect off and on (I chose +1dB) and set Min to control the depth of the effect - I chose -12dB as a "medium depth" amount
In the LFO, use different waveforms to change the effect - sine gives a smooth change, sine adds a bit of "throb", while square switches between low & high frequencies. Set the frequency to whatever you want, and output phase varies between this "Flint tremolo" at 180 degrees, to normal tremolo at 0 degrees.
Hope this is helpful to someone
