Hey I just red the following:
"We can achieve a desired slope by combining two filters. For example, we can achieve a 12 dB/oct response by combining two 6 dB/oct filters with the same cut-off frequency. As the signal travels through the first filter, the first octave experiences maximum attenuation of 6dB; as it travels through the second filter, the same octave experiences additional 6 dB of attenuation, resulting in summed response of 12 dB/oct. In all cases, the cut-off frequencies of the two filters should be identical..."
I know that a perfectly vertical brickwall filter is not possible to create, but using this technique I could simply create very steep filter curves just by layering multiple filter object in MSP in a row?