Support and Service > F.A.Q > Q10 ParaGraphic EQ

 

Frequently Asked Questions about the Q10 ParaGraphic EQ
1."Can I use the Q10 for mastering?"
2."I have a DAT machine that I can't turn the pre-emphasis off. Does Q10 solve that problem?"
3."Can I EQ the left and right separately?"
4."How can you say it's more than just EQ?"
5."Can it reduce noise on old tapes, records, or live recordings?"
6."Does the graphic display let you edit the curve directly?"
7."I have heard about multimedia filtering in the Q10. How can this improve the quality of multimedia audio production?"
8."Why would you need 10 bands of Paragraphic EQ at one time?"
9."These q numbers seem very high. Can the bands really get that tight?"
10."Once I've got these combinations of filters, is there any easy way to fine tune the EQ without having to move each paramete individually?"


1.Q: "Can I use the Q10 for mastering?"
 

Absolutely, for CD's, cassettes, multimedia, and more. The Q10 Setup Library has many tools for all types of mastering.

 

2.Q: "I have a DAT machine that I can't turn the pre-emphasis off. Does Q10 solve that problem?"
  Yes, with the Pre/De-emphasis setups in the Library. They include J17, NAB, IEC, FM-US, FM-Europe, RIAA, and more.
3.Q: "Can I EQ the left and right separately?"
 

Yes. The Q10 offers 10 bands of EQ on the left, and 10 bands on the right. Therefore, it's really a 20-band equalizer. Imagine this built in hardware and you'll begin to get the idea of just how powerful (and affordable) the Q10 is. With the Setup Library, the Q10 is much more than just EQ, it is a distinctive and unique audio processing tool.

 

4.Q: "How can you say it's more than just EQ?"
 

Here's an example: you need to have an idea of how a song or commercial will sound on an AM radio. Just load the 'AM radio' setup from the library, and you instantly have a super-steep filter that removes all bass and treble that is not part of the AM frequency response. Here's another example: you have a reel-to-reel tape recorded in Europe on an IEC machine, but your tape machine is NAB. Just load the NAB pre-emphasis curve and the output will be flat.

 

5.Q: "Can it reduce noise on old tapes, records, or live recordings?"
 

The Q10 Setup Library has specially-researched filters for removing rumble, hiss, or specific frequencies. The low and high noise filters are optimized for the ear -- psychoacoustically tuned -- so that the sound that remains is affected as little as possible, with the best noise reduction performance. SuperNotch filters are very deep, over -100dB, and have very flat in-band response; these SuperNotch filters are ideal for removing specific tones, such as the flyback transformer frequency found in many TV audio tracks.

 

6.Q: "Does the graphic display let you edit the curve directly?"
 

You can select and drag any or all of the bands in real-time. The Q10 graphs the actual frequency response curve produced by the processor, not just a template. You can hear all the adjustments in real-time. Two setups allow easy comparisons.

 


7.Q:
"I have heard about multimedia filtering in the Q10. How can this improve the quality of multimedia audio production?"
 

Multimedia audio still requires a reduced frequency response due to limitations in most playback systems. Before sample-rate conversion, it is best to remove ALL frequencies above the Nyquist frequency. For 22.05 kHz files, this is 11025Hz. The Q10 multimedia filters from the Setup Library are extremely steep brickwall filters that are so effective in removing the frequencies above Nyquist that you could sample rate convert the file by simply removing every other sample. Your sample-rate converted files will have less aliasing, resulting in better quality.

 

8.Q: "Why would you need 10 bands of Paragraphic EQ at one time?"
 

There may not be many times when you actually need 10 bands of EQ, but the Q10's number of bands combined with the ability to sweep every band across the entire frequency range and configure each band to one of 5 different filter types allow you to create combinations of filters that would be impossible to creat with any other EQ. Problem resonenses can be easily delt with severl tight filters stacked at that frequency. Combinations of filters also allow you to create brick wall filters with slopes that would otherwise be unthinkable.

 

9.Q: "These q numbers seem very high. Can the bands really get that tight?"
 

The filter design in the Q10 uses a constant bandwidth as opposed to a constant Q approach. This means that the literal interpretation of Q on applies when using maximum boost settings. This approach is used because we feel it makes the Q10 more intuitive and musical.When using small boosts and cuts , the Q value shown is about 5.5 times greater than the traditional engineering definition of Q.

 

10.Q: "Once I've got these combinations of filters, is there any easy way to fine tune the EQ without having to move each paramete individually?"
 

Yes. The Q10 will allow you to drag over multiple controls or shift-click to select more than one to move at a time. This allows you to, for example, fine tune the frequency of a notch filter created from more than one band by selecting all of their frequencies and moving them together.

 


All content copyright © 1999 by Waves LTD. All rights reserved