Room correction, DSP for dummies.


I have not paid a lot of attention to audio for some time, almost 15 years and as a result I am trying to catch up on some of the innovation and tech developments that have been popping up in that time. 

One of the more interesting to me is the advent of electronically guided digital signal manipulation to help quell small system issues and room reflections. It seems wildly promising but  the few systems that I have read about that seem to work well look to be  painfully expensive. 

Reports have seemed to indicate that this technology was making its way into other, more affordable formats but I guess I just don't understand or grasp where the field is going well enough to know where the bulk of the technology is and how its manifesting in our hobby. 

Who can help shed some light on where this tech is, how  its being applied and how can I make use of it without selling a kidney? Maybe that last part is not possible yet? 

Thanks in advance! 
dsycks

Showing 2 responses by craigl59

Investigate the impulse/frequency convolution file created by the free app REW that can be imported into lots of music editors such as JRiver (very inexpensive). Will tune your room to a very high degree depending on how much time you spend correcting the frequency curve in REW.

Eric:
REW allows you to specify any curve you like for frequency and impulse correction and you can make it mostly flat as I have done so with my summer home -- from +/- 3db for 16 to 30k hz.

Check it out -- its free. If you do your own EQ you should give it a looksee if for no other reason than to see its design and capabilities.

BTW, have used DIRAC and know its final result to be incorrect -- after running the software it shows a completely flat line for frequency response and this is never going to happen in the real world. There will always be spikes but you can control them within ranges.