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Speaker Asylum General speaker questions for audio and home theater. |
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Speaker Asylum General speaker questions for audio and home theater. |
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In Reply to: "The only thing worse than LR4 transient response is LR8 transient response!" posted by J.Mac on August 15, 2012 at 21:22:51:
... and can do group delay (phase) correction. You don't even need to use convolution of impulses, which is tricky business. You can use sneaky software like the Thuneau Phase Arbitrator. This uses "forward/reverse" processing to do it's magic. Because playback can tolerate latency (delay) what they do is roll phase FORWARD in time, which is mathmatically the opposite of group "delay"... it's group "move forward in time". You tell the program the frequency and roll off rate of your (known) system and then it pre-processes the music stream to be "forward group delayed" so that when the crossover functions add "regular group delay", they (in a sense) cancel out.
I've tested this software with square wave input. Square wave in, square wave out - AFTER summing LR4 low and highpass filters.
It's really quite amazing with the only penalty being a small delay. For video apps, you'd need a "video sync" function.
Will analogue guys digitize their precious analogue stream so they can unravel the phase distortion of an LR4 speaker design? I would say most would consider the detriment of digitization to outweigh the benefits.
That opinion may vary from person to person!
Cheers,
PResto
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Follow Ups
- It's not bad if you're in the digital domain... - Presto 09:19:56 08/16/12 (0)
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