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Band splitter with ideal phase response and no latency ??
17 posts
• Page 2 of 2 • 1, 2
Re: Band splitter with ideal phase response and no latency ?
Optimized linear phase reconstruction 5-band splitters, 3-pole and 4-pole versions.
- Attachments
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- SmartSplitter.fsm
- (39.7 KiB) Downloaded 1480 times
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martinvicanek - Posts: 1319
- Joined: Sat Jun 22, 2013 8:28 pm
Re: Band splitter with ideal phase response and no latency ?
Thanks, Martin. Such optimization condensate is very impressing. I've just realized that such transient-perfect quasi-synchronous band splitter family may be useful, when coupled to precise compressors-limiters, for maintaining under strict limits, across the whole audio spectrum, the error signal that a Widrow-Hoff LMS Machinery is processing. I've just completed a 64-tap Widrow-Hoff LMS Machinery. No bells and whistles yet. No optimization yet. Just a barebone Widrow-Hoff LMS Machinery, whose code and labels are "textbook" compliant.
See it here : http://www.dsprobotics.com/support/viewtopic.php?f=4&t=38857
It is cloning (identifying) the transfer function of a "plant" consisting in three generalized IIR Biquads in series. I designed the "plant", for resembling a medium speaker driver.
Have a nice day
See it here : http://www.dsprobotics.com/support/viewtopic.php?f=4&t=38857
It is cloning (identifying) the transfer function of a "plant" consisting in three generalized IIR Biquads in series. I designed the "plant", for resembling a medium speaker driver.
Have a nice day
- steph_tsf
- Posts: 249
- Joined: Sun Aug 15, 2010 10:26 pm
Band splitter with ideal phase response (and some latency)
Just for completeness I am posting a five-band splitter with linear phase for each band (and any combination thereof). It does have some (unavoidable) latency in order to make the filters causal. Slope is 24dB/octave, CPU load is not bad.
Have fun!
Have fun!
- Attachments
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- LinPhaseBandsplitter.fsm
- (105.32 KiB) Downloaded 1499 times
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martinvicanek - Posts: 1319
- Joined: Sat Jun 22, 2013 8:28 pm
Re: Band splitter with ideal phase response (and some latenc
martinvicanek wrote:Just for completeness I am posting a five-band splitter with linear phase for each band (and any combination thereof). It does have some (unavoidable) latency in order to make the filters causal. Slope is 24dB/octave, CPU load is not bad.
Have fun!
Hi Martin, this is a great module, but it only correctly works in poly mode, not mono (blue).
In mono mode, there's only 2 usable bands, "highpass" and "bandpass3" : "bandpass3" contains sound of "bandpass2", "bandpass1" and "lowpass", but if i check others outputs than "highpass" and "bandpass3", there's no signal available. Is there a way to correct it? Thank for your great work.
- latour
- Posts: 6
- Joined: Mon Sep 08, 2014 1:46 am
Re: Band splitter with ideal phase response and no latency ?
Hi latour, it does work in blue here, see attachment. Can you post a schematic to demonstrate the issue that you encounter?
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- LinPhaseBandsplitter_blue.fsm
- (149.08 KiB) Downloaded 610 times
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martinvicanek - Posts: 1319
- Joined: Sat Jun 22, 2013 8:28 pm
Re: Band splitter with ideal phase response (and some latenc
latour wrote:[...] it only correctly works in poly mode, not mono (blue).
I think I know what the problem was: The splitter module expected the input signal at all 4 SSE channels. This might not be the case in every usecase. Now fixed, and included more bandsplitter variants.
- Attachments
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- LinPhaseBandsplitter3.fsm
- (167.39 KiB) Downloaded 635 times
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martinvicanek - Posts: 1319
- Joined: Sat Jun 22, 2013 8:28 pm
Re: Band splitter with ideal phase response and no latency ?
It now works perfectly. Thank you Martin.
- latour
- Posts: 6
- Joined: Mon Sep 08, 2014 1:46 am
17 posts
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