Stereobase

skipyrich · Aug 26, 2004, 07:50 AM

I have created simple DSP effect, that can change stereobase from mono to full stereo. IMHO it may be useful.
http://skipyrich.siteburg.com/store/stereobase.zip

Tiger M · Aug 26, 2004, 09:16 AM

You can save 1 instruction on that. Instead:

; mono = mono*(1-base);
macsn mono, mono, mono, base
; outN = mono + inN*base
macs outL, mono, inL, base
macs outR, mono, inR, base

You can use:

;outL = (1-base)*mono + base*inL
interp outL, mono, base, inL
;outR = (1-base)*mono + base*inR
interp outR, mono, base, inR

And don't forget that using "in" registers more than once in the code may cause problems in some particular cases. You should use dummy temp registers for that purpose.

skipyrich · Aug 26, 2004, 11:03 AM

I have updated code with your optimization. Thanks for your suggestions.

Quote:

Originally Posted by Tiger M

And don't forget that using "in" registers more than once in the code may cause problems in some particular cases. You should use dummy temp registers for that purpose.

I saw the code from another DSP effects (b2b, gainHQ, etc...) in which this behaviour is used too...
Where I can find these problems explained? (URL?)

Tiger M · Aug 26, 2004, 11:27 AM

Quote:

I saw the code from another DSP effects (b2b, gainHQ, etc...) in which this behaviour is used too...
Where I can find these problems explained? (URL?)

There isn't much to explain. Max has stated that when you use "in" regs more than once you might get some problems when you have connected the effect directly to the FXBus. He hasn't explained further than that.

I personally haven't encountered problems of this kind in my dsp coding experience, but Max should be trusted...

Max M. · Aug 26, 2004, 12:05 PM

http://driverheaven.net/showthread.php?t=41855

skipyrich · Aug 26, 2004, 12:16 PM

Hmmm...
I have found some (outdated?) explanations in kX Help... And I does not found any similar info in http://kxproject.lugosoft.com/dane.php

As using dummy registers require additional instructions, I let it remain as is and will wait for bugreports

Tiger M · Aug 26, 2004, 12:31 PM

That explains everything.
Sorry Max, I haven't seen this thread before...

Quote:

As using dummy registers require additional instructions, I let it remain as is and will wait for bugreports

two more registers won't hurt... it's always better to be shure that problems won't happen, than to wait for them to happen and then fix them by constraint...

(I'm very wise today, ain't I

)

skipyrich · Aug 26, 2004, 06:24 PM

Thanks, Max, your post is very cognitive. I was surprised by "Multithreaded execution"...
In which thread on the russian forum this problem is discussed?

Quote:

two more registers won't hurt...

Two more registers and two more instructions won't hurt, but two more resource on each effect does.
IMHO it is better to make dummy effect which does nothing but buffering between FXBus and other effects.

BiCho · Dec 6, 2004, 12:23 AM

If this effect is easy to code, then a karaoke wouldn't be difficult too, am I wrong? Analog X (analogx.com) has done one which works as a VST and for Winamp too.

What the effect does is cancel whichever signal is present on both channels. Would be really nice to have one within the DSP...pretty please??

skipyrich · Dec 6, 2004, 05:34 AM

Changing width of a stereoimage is a simple task, however there is no way to correctly extract center channel from two channels. Removing voice from a song is done with some assumptions that are not trivial.

Lex Nahumury · Dec 6, 2004, 04:35 PM

http://www.hardwareheaven.com/showthre...ight=crossfeed
Code inside. see end of thread.

/LeMury

BiCho · Dec 28, 2004, 02:41 PM

I've been using stereobase since it was posted and i find it really useful.

However, since I installed 3538h, the plugin dissapears from my DSP each restart, giving me an error message when I try to load it. The problem gets fixed as soon as i reinstall the plugin, however I have to do this each restart

Chester01 · Dec 28, 2004, 03:43 PM

http://skipyrich.narod.ru/prog/stereobase.zip
links down

Lex Nahumury · Dec 28, 2004, 05:39 PM

Quote:

However, since I installed 3538h, the plugin dissapears from my DSP each restart, giving me an error message

[color=yellow]It probably needs to be recompiled with 3538 SDK.[/color]
[color=yellow]Asks the author of the plug.[/color]
[color=yellow][/color]
[color=yellow]/LeMury[/color]

skipyrich · Dec 28, 2004, 06:29 PM

Quote:

http://skipyrich.narod.ru/prog/stereobase.zip
links down

Link was changed: http://skipyrich.siteburg.com/store/stereobase.zip
Please review the first post in this thread.

Quote:

[color=yellow]It probably needs to be recompiled with 3538 SDK.[/color]
[color=yellow]Asks the author of the plug.[/color]

This plugin is an .da source and don't require additional compiling.

Quote:

However, since I installed 3538h, the plugin dissapears from my DSP each restart, giving me an error message when I try to load it. The problem gets fixed as soon as i reinstall the plugin, however I have to do this each restart

Use regedit after restart to review the registry key "HKEY_CURRENT_USER\Software\kX\Plugins". If you can't see the parameters "1ac05bf3-27d2-451d-8c5e-9afddbe39c38" and "1ac05bf3-27d2-451d-8c5e-9afddbe39c38.name", then probably your windows registry is broken and repaired on each restart.
If these parameters exists, but its data don't point to the stereobase.da, then you have an other plugin that use this GUID

.

Lex Nahumury · Dec 28, 2004, 09:35 PM

>>This plugin is an .da source and don't require additional compiling.
[color=yellow]Ah, yes I see now (duh). Then it's the GUID like you already mentioned.[/color]
[color=#ffff00]/LeMury[/color]

Chester01 · Sep 12, 2008, 10:44 PM

I realize this is near 4 years old by now... does anyone have the code for this ?

stylus02 · Sep 13, 2008, 12:05 PM

http://freenet-homepage.de/stylish-s...tereo_v1.0.zip

Maddogg6 · Sep 13, 2008, 10:18 PM

A member by the name of RadioColonel (spelling?? probably wrong??) has a pack of Dane only plugins - one of which is a widener that works rather well.
:::.::.::: The Castle :::.::.:::

It uses more resources than Stylus02's but, if you're like me - you like options

Chester01 · Sep 13, 2008, 11:29 PM

Thanks Maddog6; I did actually need to "expand" the stereo field, not convert it between "100%" and mono... See, in my dorm room, the way my desk wraps around the room; when i am sitting on my bed, my right speaker is approx 3.1 feet further back from me the left one. I have time delayed and volume corrected the sound with the inverse square law so the stereo imaging is 'centered' however there is only about 23.4 degrees of separation between the two speakers so I wanted to figure out how to calculate 'how much' stereo expansion i need... lol big problems

Maddogg6 · Sep 14, 2008, 12:41 AM

No problem...

Well - as far as this plug in 'expanding' - ?? - it *sounds* like (not that I can look at dane code and figure out what is happening exactly) it simply amplifies the difference between left versus right - in other words - amplifies the non-centered panned audio. As, I notice - the harder a sound is panned in the stereo field - the more amplified it seems with the plugin set to 100% - where 0% seems like normal (not mono)

So it seems this plugin is the 'compliment' to Stylus02's in that it does just the opposite.

As far as calculating - heh - I just mess with sliders till it sounds cool

The theory makes my head hurt - but good sound is like asprin.

Chester01 · Sep 14, 2008, 09:56 PM

yea; messing with the theory gets you so far... it can help you figure out where about the sliders should sound good and save hours of tuning lol; when it comes to a timedelay to put the speakers in proper time alignment, when you get close to the correct delay a little difference in delay from the 'proper' delay will sound wierd, then getting closer it will sound better, then get bad again and then finally its where it should be lol, can be tough to tune by ear

Aug 26, 2004, 07:50 AM	#1
skipyrich DriverHeaven Newbie Join Date: Aug 2004 Location: Russia Posts: 6 Rep Power: 0	Stereobase I have created simple DSP effect, that can change stereobase from mono to full stereo. IMHO it may be useful. http://skipyrich.siteburg.com/store/stereobase.zip Last edited by skipyrich; Dec 28, 2004 at 06:33 PM. Reason: URL is changed

Aug 26, 2004, 09:16 AM	#2
Tiger M kX user Join Date: Apr 2004 Posts: 851 Rep Power: 0	You can save 1 instruction on that. Instead: *; mono = mono(1-base); macsn mono, mono, mono, base ; outN = mono + inNbase* macs outL, mono, inL, base macs outR, mono, inR, base You can use: *;outL = (1-base)mono + baseinL* interp outL, mono, base, inL *;outR = (1-base)mono + baseinR* interp outR, mono, base, inR And don't forget that using "in" registers more than once in the code may cause problems in some particular cases. You should use dummy temp registers for that purpose. __________________ Miss you, Steve...

Dec 6, 2004, 12:23 AM	#9
BiCho Audiotecna- Representante Join Date: Dec 2002 Location: Bogota, Colombia Posts: 173 Rep Power: 0	If this effect is easy to code, then a karaoke wouldn't be difficult too, am I wrong? Analog X (analogx.com) has done one which works as a VST and for Winamp too. What the effect does is cancel whichever signal is present on both channels. Would be really nice to have one within the DSP...pretty please?? __________________ Audiotecna - Innovación Musical Distribuidora oficial de Ortofon DJ, Native Instruments and Moog Music para Colombia (1)8073934

Dec 28, 2004, 02:41 PM	#12
BiCho Audiotecna- Representante Join Date: Dec 2002 Location: Bogota, Colombia Posts: 173 Rep Power: 0	problems with 3538h I've been using stereobase since it was posted and i find it really useful. However, since I installed 3538h, the plugin dissapears from my DSP each restart, giving me an error message when I try to load it. The problem gets fixed as soon as i reinstall the plugin, however I have to do this each restart __________________ Audiotecna - Innovación Musical Distribuidora oficial de Ortofon DJ, Native Instruments and Moog Music para Colombia (1)8073934

Dec 28, 2004, 03:43 PM	#13
Chester01 HardwareHeaven Senior Member Join Date: Jan 2004 Location: St. Cloud, MN Posts: 492 Rep Power: 0	http://skipyrich.narod.ru/prog/stereobase.zip links down __________________ COMP: Dual Intel PIII 733 Mhz; GeForce 4 Ti 4600; 1.128 Gb RAM; SB0350 (Audigy 2 ZS Platnium) STEREO(I UPGRADED):Crown Audio K1 and K2 amplifiers (4000 watts at .1% THD ), JL 13w7 Subwoofer (6.5 CF) (2) 18" PR's, Klipsch SB-1's, some cement blocks for speaker stands...

Aug 26, 2004, 12:05 PM	#5
Max M. h/h member-shmember Join Date: Dec 2002 Location: Evil Empire Posts: 2,639 Rep Power: 69	http://driverheaven.net/showthread.php?t=41855

Aug 26, 2004, 12:16 PM	Thread Starter #6
skipyrich DriverHeaven Newbie Join Date: Aug 2004 Location: Russia Posts: 6 Rep Power: 0	Hmmm... I have found some (outdated?) explanations in kX Help... And I does not found any similar info in http://kxproject.lugosoft.com/dane.php As using dummy registers require additional instructions, I let it remain as is and will wait for bugreports

Dec 6, 2004, 05:34 AM	Thread Starter #10
skipyrich DriverHeaven Newbie Join Date: Aug 2004 Location: Russia Posts: 6 Rep Power: 0	Changing width of a stereoimage is a simple task, however there is no way to correctly extract center channel from two channels. Removing voice from a song is done with some assumptions that are not trivial.

Dec 6, 2004, 04:35 PM	#11
Lex Nahumury DH Senior Member Join Date: Jan 2003 Location: The Netherlands Posts: 1,932 Rep Power: 64	http://www.hardwareheaven.com/showthre...ight=crossfeed Code inside. see end of thread. /LeMury

Dec 28, 2004, 09:35 PM	#16
Lex Nahumury DH Senior Member Join Date: Jan 2003 Location: The Netherlands Posts: 1,932 Rep Power: 64	>>This plugin is an .da source and don't require additional compiling. [color=yellow]Ah, yes I see now (duh). Then it's the GUID like you already mentioned.[/color] [color=#ffff00]/LeMury[/color]

Sep 12, 2008, 10:44 PM	#17
Chester01 HardwareHeaven Senior Member Join Date: Jan 2004 Location: St. Cloud, MN Posts: 492 Rep Power: 0	I realize this is near 4 years old by now... does anyone have the code for this ? __________________ COMP: Dual Intel PIII 733 Mhz; GeForce 4 Ti 4600; 1.128 Gb RAM; SB0350 (Audigy 2 ZS Platnium) STEREO(I UPGRADED):Crown Audio K1 and K2 amplifiers (4000 watts at .1% THD ), JL 13w7 Subwoofer (6.5 CF) (2) 18" PR's, Klipsch SB-1's, some cement blocks for speaker stands...

Sep 13, 2008, 12:05 PM	#18
stylus02 HardwareHeaven Addict Join Date: Jan 2008 Location: germany, sb0090 Posts: 259 Rep Power: 0	http://freenet-homepage.de/stylish-s...tereo_v1.0.zip __________________ http://kxm.dyndns.org

Sep 13, 2008, 10:18 PM	#19
Maddogg6 Tail Razer Join Date: Jun 2005 Location: Bernyurass, AZ - USA Posts: 4,027 Rep Power: 0	A member by the name of RadioColonel (spelling?? probably wrong??) has a pack of Dane only plugins - one of which is a widener that works rather well. :::.::.::: The Castle :::.::.::: It uses more resources than Stylus02's but, if you're like me - you like options

Sep 13, 2008, 11:29 PM	#20
Chester01 HardwareHeaven Senior Member Join Date: Jan 2004 Location: St. Cloud, MN Posts: 492 Rep Power: 0	Thanks Maddog6; I did actually need to "expand" the stereo field, not convert it between "100%" and mono... See, in my dorm room, the way my desk wraps around the room; when i am sitting on my bed, my right speaker is approx 3.1 feet further back from me the left one. I have time delayed and volume corrected the sound with the inverse square law so the stereo imaging is 'centered' however there is only about 23.4 degrees of separation between the two speakers so I wanted to figure out how to calculate 'how much' stereo expansion i need... lol big problems

Sep 14, 2008, 12:41 AM	#21
Maddogg6 Tail Razer Join Date: Jun 2005 Location: Bernyurass, AZ - USA Posts: 4,027 Rep Power: 0	No problem... Well - as far as this plug in 'expanding' - ?? - it sounds like (not that I can look at dane code and figure out what is happening exactly) it simply amplifies the difference between left versus right - in other words - amplifies the non-centered panned audio. As, I notice - the harder a sound is panned in the stereo field - the more amplified it seems with the plugin set to 100% - where 0% seems like normal (not mono) So it seems this plugin is the 'compliment' to Stylus02's in that it does just the opposite. As far as calculating - heh - I just mess with sliders till it sounds cool The theory makes my head hurt - but good sound is like asprin.

Sep 14, 2008, 09:56 PM	#22
Chester01 HardwareHeaven Senior Member Join Date: Jan 2004 Location: St. Cloud, MN Posts: 492 Rep Power: 0	yea; messing with the theory gets you so far... it can help you figure out where about the sliders should sound good and save hours of tuning lol; when it comes to a timedelay to put the speakers in proper time alignment, when you get close to the correct delay a little difference in delay from the 'proper' delay will sound wierd, then getting closer it will sound better, then get bad again and then finally its where it should be lol, can be tough to tune by ear __________________ COMP: Dual Intel PIII 733 Mhz; GeForce 4 Ti 4600; 1.128 Gb RAM; SB0350 (Audigy 2 ZS Platnium) STEREO(I UPGRADED):Crown Audio K1 and K2 amplifiers (4000 watts at .1% THD ), JL 13w7 Subwoofer (6.5 CF) (2) 18" PR's, Klipsch SB-1's, some cement blocks for speaker stands...