parametric equalizers
 User Name Stay logged in? Password
 Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read Search

 Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools......

 Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
 1st April 2004, 06:29 PM #1 stupid m0nkey   diyAudio Member   Join Date: Feb 2004 Location: kelowna, BC parametric equalizers is the 'Q' on all parametric equalizers a set amount (ie. a 'Q' of .5 is 2 octaves) or does each manufacturer set their own standards for 'Q'? i specifically am wondering about my Alpine 3402 (car audio)
 2nd April 2004, 03:19 AM #2 haldor   diyAudio Member   Join Date: Aug 2001 Location: Columbus, Ohio Q = 1 means the filter has a bandwidth of 1 octave. This is standard as far as I have ever seen
 2nd April 2004, 03:23 AM #3 stupid m0nkey   diyAudio Member   Join Date: Feb 2004 Location: kelowna, BC so then a Q of 10 would mean 1/10 of an octave?
 2nd April 2004, 12:52 PM #4 FLZapped   diyAudio Member     Join Date: Oct 2003 Location: Florida Yes, a Q of 10 means the filter's -3dB bandwidth points(half power) will be 0.1 octave. It's a simple mathmatical inversion. -Bruce
 2nd April 2004, 01:15 PM #5 macboy   diyAudio Member   Join Date: Oct 2003 Location: Ottawa, Canada Q is defined as the bandwidth divided by the center frequency, both in Hz of course. So an EQ with a bandwidth of 5000 Hz centered at 10000 Hz has a Q of 0.5. The problem is that "bandwidth" is not strictly defined. That is where the difference between manufacturers come. One common definition is where the EQ has half the boost or cut as at the center frequency. For more information than you could ever want, try reading up on Constant-Q EQ's and Exposing Equalizer Mythology and Operator Adjustable Equalizers at Rane Audio's website.
JensRasmussen
diyAudio Member

Join Date: Jul 2002
Location: Denmark - Jutland
Q

I think it's like this

\Jens
Attached Images
 bw.gif (1.2 KB, 294 views)

 15th February 2005, 06:56 AM #7 Slab   diyAudio Member   Join Date: Feb 2005 Location: Westfield, NJ I'm no expert but let me try to understand the question. "Is the Q on all parametrics the same?" I thought "parametric" meant adjustable parameter. Every equalizer has three basic parameters: Gain, Frequency, Bandwidth (Q). Every parametric I've seen had adjustable gain and freq and Q. Usually a Q from about .5 oct to 2 oct. The mathematical relationships between Q and freq can be seen in the other forum responses. I am not familiar with the Alpine EQ but if the Q is not adjustable it has very limited capability. __________________ Don B gone fishin
 16th February 2005, 04:49 AM #8 Enzo   diyAudio Member   Join Date: Sep 2004 Location: Lansing, Michigan Oh, I get it. Not all parametrics have adjustable Q, and if yours doesn't, then you want to know what they made it, yes? That would be up to them and what they wanted to achieve. There would be no particular standard, though it might well be that more than one maker might settle upon a similar figure as the best overall compromise.

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is Off Forum Rules
 Forum Jump User Control Panel Private Messages Subscriptions Who's Online Search Forums Forums Home Site     Site Announcements     Forum Problems Amplifiers     Solid State     Pass Labs     Tubes / Valves     Chip Amps     Class D     Power Supplies     Headphone Systems Source & Line     Analogue Source     Analog Line Level     Digital Source     Digital Line Level     PC Based Loudspeakers     Multi-Way     Full Range     Subwoofers     Planars & Exotics Live Sound     PA Systems     Instruments and Amps Design & Build     Parts     Equipment & Tools     Construction Tips     Software Tools General Interest     Car Audio     diyAudio.com Articles     Music     Everything Else Member Areas     Introductions     The Lounge     Clubs & Events     In Memoriam The Moving Image Commercial Sector     Swap Meet     Group Buys     The diyAudio Store     Vendor Forums         Vendor's Bazaar         Sonic Craft         Apex Jr         Audio Sector         Acoustic Fun         Chipamp         DIY HiFi Supply         Elekit         Elektor         Mains Cables R Us         Parts Connexion         Planet 10 hifi         Quanghao Audio Design         Siliconray Online Electronics Store         Tubelab     Manufacturers         AKSA         Audio Poutine         Musicaltech         Holton Precision Audio         CSS         Dx Classic Amplifiers         exaDevices         Feastrex         GedLee         Head 'n' HiFi - Walter         Heatsink USA         miniDSP         SITO Audio         Twin Audio         Twisted Pear         Wild Burro Audio

 Similar Threads Thread Thread Starter Forum Replies Last Post vcelkamaja Digital Line Level 1 29th August 2009 07:55 AM nl Swap Meet 6 21st May 2009 03:58 PM murat Solid State 4 10th March 2005 05:12 PM Audio Addict Analogue Source 2 6th June 2003 12:13 PM

 New To Site? Need Help?

All times are GMT. The time now is 09:29 PM.