6 posts
Page 1 of 1
|
Hi,
I'm looking for an audio interface with a parametric EQ that supports lowering the volume of a very narrow frequency band to counteract bass boom -- standing waves -- in my living room where I have my Hauptwerk organ console. It's basically only a few notes in the bottom octave of the pedals that are affected, F-G-A. Can the Revelator io24 do this? Relatedly, does the parametric EQ apply to all outputs, or can it be configured to only affect the speaker outputs, as the headphones obviously don't have the same problem. Thanks, Colin |
|
Welcome to the Forum!
The Revelator io24 can but I wouldn't say that "Q" (see screenshot with "Q" at max) is super narrow. Input channels 1 & 2 on the Revelator io24 include the Fat Channel (includes a standard parametric EQ). There is no independent Fat Channel for the outputs.
PLEASE ADD YOUR SYSTEM SPECS TO YOUR SIGNATURE.
Download the SO 6 PDF MANUAL. Access your MY.PRESONUS account. OVERVIEW of how to get your issue fixed or the steps to create a SUPPORT TICKET. Needs to include: 1) Subject 2) Description 3) Country 4) Product 5) OS 6) Audio Software Windows 11 Pro 64-bit (22H2), Studio One 6.5 Professional | Notion 6.8.2 | Universal Control v4.1.0.93124 Intel NUC 13 (Intel i5-1340P, Intel Iris Xe Graphics, 32GB RAM, 2TB SSD, SIII 32 |
|
I don't understand your answer. Input will be stereo via USB. How narrow can I define the parametric EQ?
|
|
The answer depends on the equalizer you choose. The standard 4-band EQ goes as high as Q=10.
But note that unless the offending sound is a pure sine wave you'll also find peaks at every multiple of the fundamental frequency. You may need a lot of filters to mute one single sound (and do harm to the remaining signal in the process). |
|
The higher frequencies aren't as much of a problem; the resonance is caused by standing waves at low frequencies, with the lowest octave being the worst.
What does "as high as Q=10" mean? The narrowness of the band (which is what I need) or the amount of attenuation? I need to attenuate by 3DB at least. |
|
The standard FAT PEQ has gain ranging from -15dB to +15dB and a Q (=1/bandwidth) ranging from 0.1 to 10 for each of the 4 bands.
Q (quality factor) = fc (center frequency) / 3dB bandwidth (distance between 3dB drop-off or gain frequencies). So a more narrow filter has a higher Q. link NB. Did some testing. The link is about energy and power hence the 3dB value. For a PEQ it's about 'half gain': Q = fc / half-gain bandwidth. So for fc=1kHz, gain=-12dB and Q=2 there's 500Hz bandwidth between the points on the curve where gain is -12/2 = -6dB. |
6 posts
Page 1 of 1
Who is online
Users browsing this forum: No registered users and 1 guest