![]() Another odd thing is the lack of an error indication, the commands execute but the audio is not modified. It’s odd to me that effects like click removal, normalize, and noise removal all work as expected but the filter effects do not, even though the target audio track is the same. The high pass filter command executes in 11 seconds for the 39 minute track recorded at 96K. The 39 minutes is the length of the track in audacity, not the length of time needed to execute the command. Testing a simple fixed frequency 6dB per octave lowpas filter to attenuate the second harmonic of all guitar notes.Facebook. It calculates the components values of a low pass filter for a passive audio crossovers. I think we may have a bit of a misunderstanding on the time issue. Low-pass filter with slope of 6dB per octave. ![]() Also, there are no errors in the system logs. Normal disk storage is approxiamately 6TB of which a little more than half is available. (It is so called because the frequency span in a doubling of frequency. An octave is a term borrowed from music and represents a doubling of frequency. The same roll-off can also be specified as 6 dB/octave. All first-order filters have a 20 dB/decade roll-off. I have 170GB of SSD storage dedicated to my audio work (audacity tmp and project files are here), 32 GB of system RAM tied to a Ryzen 3800X 8 core processor. The steepness of the gain in the stop band is referred to as the filter’s roll-off. The Ampeg bass amps were done by him (Ulrich and team did the IRs) and are all spectacular imo.System resources are not a problem. Can be had for cheap via their “$29.99 per month plan” which allows you to cancel and re-up any time and get permanent licenses. Pretty much all of the Plugin Alliance amps are built by Nembrini and worth checking out if you like his work. I swear this thing sounds and feels like the 1959 I played in the 70’s once I crank the input level on the FX panel way down. ![]() The SE100 is the most accurate amp sim I’ve heard to date and the included IRs have some absolute gems (which I also use with Nembrini’s HiVolt). It doesn’t have the farty bass issue the Faceman has (just like the real amp mind you) though, so pre filter not needed. Same story as the Faceman with respect to lowing the input vol way down (on the FX panel) and taking the output vol up (they call it power soak). The power delivered by the amplifier remains constant. L-pads keep the load 'seen' by the amplifier constant, affecting only the power delivered to the speaker. The amp part was made by Nembrini and the IRs by Dirk Ulrich and team. L-pad (Speaker Attenuation) Driver Impedance: Ohms. The mother of all amp sims for me though, is Brainworx Suhr SE100 if you’re into Marshall 1959 sounds. His IRs are much better in Faceman than earlier products imo. Between these two things, the final result is exceptional for a sim IMO. Unfortunately the only such animal in VST existence that I’m aware of is inside Toolchain by RS Met (Filters>Engineers Filter then choose high pass 3dB per octave and set Hz the suite). This filters some bass before it ever hits it and really tightens up the low end. The boomyness IMO is best controlled with a 3dB per octave high pass placed before the amp sim (his on-board boom control seems to be 6dB per octave post cab). However, lowering the input gain slider and raising the output slider completely transforms them with respect to getting realistic clean to crunch transitions that respond well to guitar volume knob. A first-order filters response rolls off at 6 dB per octave (20 dB per decade) (all first-order lowpass filters have the same normalized frequency response). In the FWIW department, I’ve found Nembrini amp sims to generally be boomy and overly distorted. The Butterworth filter is a type of signal processing filter designed to have a frequency response that is as flat as possible in the passband.
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