DSP
BOB DENNIS ON DIGITAL SIGNAL PROCESSING

010 - Time For A Test - Part 1
"Using your ears" has always been necessary when you use signal processing. With the modern DAW Plug-ins it’s even more critical then before. Can you hear frequency and bandwidth? Bob shows you how to find out.

 

Sometimes you get a brilliant idea and you think you can get it together quickly, just to find out it's a bit more of a challenge than you realized.  So my planned post having audio examples of how different bandwidths sound to the ear has to be delayed.  I'm trying to get an example that is dramatic and not subtle, so I need more time trying different plug-ins and parameter settings to clearly show what I'm talking about. 

The bottom line is that equalization plug-ins sound quite different at extreme parameter settings.  I demonstrated this in a previous DSP article (006-Mastering In The Zone) where I compared the Digi rack EQ with the Ozone EQ using the same parameters in an audio demo.  I scrapped this week's demo and the "test" of hearing bandwidth when I decided the Digi Rack Eq was not giving me the "easy to hear" results.

I don't like WAVES EQ plug-ins but Greg Reilly, Manager at the Disc Ltd. explains that you have to "use your ears."  His point is that a 4.0Q on one program will never sound like a 4.0Q on another plug-in program and you had to use you ears to get what you need.  He has a point, but we still should try to get to the point that we can hear what a specific bandwidth like a "Q of 2.8" should sound like. 

So the demo is out of the picture for right now, but next week I'll post part 2 of this article where I explain the "how and when" to use EQ bandwidths of 0.7, 1.4, 2.8 and 5.6.  So, please stay tuned.


wise Bob Sr.
 

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