Impulse response models are useful tools appearing in a growing selection of products but most of what I've seen is amplifier and cabinet models. Is there a library of filter responses available? I would like to find an impulse response of a first order high pass filter with a cutoff frequency of 90 Hz to roll off lower frequencies at 6dB/octave. This is useful in a boomy room or if the FOH subs are too hot. I have a new preamp pedal coming in which supports user-provided impulse responses and think an HPF would be a nice option to have.