Reverse Polarity Fl Studio

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OH!!

Updated to reflect changes in FL Studio 10 versions. Edison lets you insert silence, normalize volume, reverse the polarity, apply a fade in and out effect, trim side noise, blur or equalize. For those familiar to FL studio, this is accessible there as a tickbox ('Reverse Polarity') in the SMP tab of the channel settings menu. This should literally invert the wavefront of the sound, an effect that the ear can't recognize, but can be used very effectively for signal extraction, for instance when one wants to extract the voice part. Possibly the easiest way to generate a stereo image from a mono track is to duplicate the track and flip the phase (actually reverse the polarity) of the copy. With two versions of the same signal, with opposite polarities, coming out of different speakers, you’ll get a wide, diffuse image. Dec 13, 2013 The point is, that one doesn't work in FL Studio either. Are you saying there might be a way to reverse the polarity via the keyboard's settings instead of using the switch on the pedal? EDIT: @reflex, does FL Studio not support this particular brand/model of keyboard?

sorry

Inverse Polarity is what you said... doesn't matter

does this help:

inverse polarity' in the sense that you're describing is known as 'Differential transmission' and simply means that you have two wires with opposite voltages on them - i.e. when one wire has a high voltage, the second has a low volatage, and vice-versa. The technical answer is phrased a bit differently - rather than referring to a high and a low voltage, what you're really measuring is the voltage difference between the two wires. Imagine hooking a voltmeter between the two wires - a '1' may be transmitted by having a positive voltage appear on the voltmeter; a '0' may be transmitted by having a negative voltage appear on the voltmeter. It's really no harder than this.

The reason is relatively simple - every wire in the universe is also an antenna, and picks up stray signals. You can imagine that this can be a huge problem when you imagine running a 100 meter length of twisted-pair ethernet cable. That's one big antenna. So, how do you eliminate the stray signals?

You start off by twisting the wires together. If you open up any modern communications cable (USB, Ethernet, Firewire, etc) you'll notice that the data wires are twisted around each other. Because of this twisting and the consequent extremely close coupling between the wires, almost all of the stray signals picked up by one wire are also picked up by the other one. So, now you have two noisy signals rather than one - doesn't seem like we've gotten anywhere, ehh?

Well, now we do some mathematics. Imagine the signal in one wire is (S+N), where S is the original signal, and N is the noise it's picked up. The signal in the second wire will then be (-S + N), where the signal is exactly the opposite of the first wire, but the noise is the same (it didn't get inverted). What happens when you subtract the second signal from the first?

Result = (S+N) - (-S + N)
Result = S + N + S -N
Result = 2S

What happened? We ended up with twice the amplitude of the first signal, and all of the noise got cancelled out!

As to how you generate a signal, it's pretty easy. In order to transmit a signal down a cable, you normally run it through an amplifier inside whatever electronics it starts from. Note that in this sense, the 'amplifier' is a tiny circuit, not a big black box with a dial that goes from 0 to 11, though the big black box probably has a bunch of the tiny amplifiers.

Anyway, in order to generate this differential signal, you run it through two seperate amplifiers - one an Inverting amplifier (google it, or simply accept that this exists), one a non-inverting amplifier. Presto, the two outputs are attached to a wire, and you have a differential signal.

I didn't write that BTW

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When recording midi using Presence, the piano sounds great and the sustain pedal works as expected. But when I play back the recorded midi, the sustain pedal doesn't work properly. I see that the sustain pedal was recorded. But it has a value of 1 when the pedal is not engaged and a value of 0 when it is engaged. It seems that when the pedal is engaged, it is cutting off the sustain rather than sustaining the note. Any ideas on how to reverse the polarity of the recorded sustain? I cannot reverse the polarity of the sustain pedal itself because then when the keyboardist is playing, all of his notes sustain until he presses the sustain pedal.
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Please update your signature to include your keyboard & pedal information.
Check this video out to see how it compares to your settings:
https://youtu.be/DKgmfCFIBEY
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Thanks for the reply Trucky. The filters are all turned off and the sustain pedal midi is being recorded. I tried using the 'delete short notes' command, and it does help in some cases, but in other cases, the keyboardist is playing notes that are getting deleted by that delete short notes command. So rather than fixing the sustain issue in general, it only works if the keyboardist is playing notes longer than the threshold set for the delete short notes command. So, the sustain still isn't working.
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Hi donaldfincher,
Did you ever figure this one out? I'm in the same situation. I don't have any options checked and when I record the sustain pedal works fine, but on playback everything is the opposite.
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Midi Keyboard: M-Audio Keystation 88es + Neewer sustain pedal with polarity switch
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I ended up buying a new sustain pedal which gave you the option of reversing the 'polarity' and that has worked - inexpensive if annoying.
Please note that I may express opinions that are different from yours but I do not intend to cause offence.
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I'm interested in this as well, just got a pedal for my Novation Launchkey, will try out tomorrow morning and report back findings.
Gary, I think your referring to a different problem, one that I also had. The issue of using the correct polarity pedal with the keyboard. If you use the wrong one, then when you put you foot down it won't sustain but when you take your foot off, it sustains. I too ended up getting a dual polarity switchable pedal to use with my current keyboard and to cover me for any other that I buy.
I think Iragoldstein is referring to a situation whereby the pedal is the correct polarity with the keyboard and works fine with that. It will also record ok but when the track is played back, studio one is somehow inverting the sustain info or recording different info to begin with that reverses the sustain information on the automation track during playback.
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Understood - not had that problem.
Please note that I may express opinions that are different from yours but I do not intend to cause offence.
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I had a look at this today.
I started up and used a stand alone VST piano to test the new sustain pedal with my keyboard, everything ok, the pedal sustains when pushed down and ceases when returning to up position, no need to switch polarity on the pedal. Had a bit of a jam, everything working ok.
Start up Mixcraft pro 8.
Recorded and played back an Acoustica piano instrument, everything worked as expected, sustain pedal records and plays back as expected. Did the same with a Kontakt piano, Alicias keys, again no problems, everything works as expected.
My Novation Launchkey keyboard and the generic sustain pedal are working as expected with standalone VST instruments and also inside a DAW (Mixcraft) when playing, recording and playing back recorded content.
Started up Studio One and opened a small project I am working on. Inserted Instrument track, put a Kontakt instrument (Alecia's keys) on the track and had a quick jam with the other instruments.
Keyboard and sustain pedal works as expected. Recorded a passage using the sustain pedal. Passage recorded and played back as expected, sustain pedal working as expected.
Everything recorded and played back without issue, unable to replicate the sustain pedal problem indicated in this thread with version 3.5.2.44603.
Thought I would update my version of Studio One and retest.
Now on version 3.5.6.46910
Everything working as expected, tried some presence instruments as well. All record and playback sustain as supposed to.
Unable to replicate the sustain problem indicated in this thread. Everything worked as it should straight away without any changing of settings.
Unable to test version 4 as I don't have that version.
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Just out of interest I am connected to my computer via a 5 pin MIDI OUT signal being generated from my controller and feeding into a midi interface on its own private USB port. (PCI Based)
With USB only in the case of the Novation controller can you check to see what else is going on with the USB port. What else is connected there. This may be a USB port related issue only as well. The sustain message is being flipped for some reason. It never happens over midi.
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Are you referring to my novation Jemusic? I don't have a problem with the sustain issue, just trying to replicate the problem unsuccessfully. Regarding which USB input I use with the keyboard, it gets whatever is available wherever on the computer, USB 3.0 or 2.0 back or front. I find it always works without problem regardless of which USB port I use and whatever is on that same bus.
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Electrical Outlet Reverse Polarity

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Here’s something to try:
Some keyboards revert their pedal input on/off response depending on if the pedal is plugged in before or after the keyboard is powered up. So try flipping the pedal’s on/off switch and change your pedal plug-in/power up routine. That may get the pedal to work OK both for S1 and for the keyboard.

How To Isolate Vocals Reverse Polarity Fl Studio

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SwitchBack wroteHere’s something to try:
Some keyboards revert their pedal input on/off response depending on if the pedal is plugged in before or after the keyboard is powered up. So try flipping the pedal’s on/off switch and change your pedal plug-in/power up routine. That may get the pedal to work OK both for S1 and for the keyboard.

This is very good advice. I have seen some very strange behaviour in terms of plugging in sustain pedals either before or after powering up. In terms of their own behaviour and what is being sent to a DAW. (with Yamaha and Nord synths especially) Although I would imagine in many cases the sustain pedal has not been removed for some time.
If the sustain pedal has been plugged in for a while, it might be good to pull it out, power up and down and then repatch pedal back in. Maybe clean plug and spray some contact cleaner in the socket etc.. Sometimes when plugs are not touched for a long time, a form of corrosion builds between the contacts and could send misleading information.
The internal sound engine of a keyboard may be getting the right message but the message being sent over USB may be different and corrupted for some reason.
Please add your specs to your SIGNATURE.
Search the STUDIO ONE 4 ONLINE MANUAL. Access your MY.PRESONUS account.
OVERVIEW of how to get your issue fixed or the steps to create a SUPPORT TICKET.
Needs to include: 1) One Sentence Description 2) Expected Results 3) Actual Results 4) Steps to Reproduce.
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tezza wroteI'm interested in this as well, just got a pedal for my Novation Launchkey, will try out tomorrow morning and report back findings.
Gary, I think your referring to a different problem, one that I also had. The issue of using the correct polarity pedal with the keyboard. If you use the wrong one, then when you put you foot down it won't sustain but when you take your foot off, it sustains. I too ended up getting a dual polarity switchable pedal to use with my current keyboard and to cover me for any other that I buy.
I think Iragoldstein is referring to a situation whereby the pedal is the correct polarity with the keyboard and works fine with that. It will also record ok but when the track is played back, studio one is somehow inverting the sustain info or recording different info to begin with that reverses the sustain information on the automation track during playback.

Thanks. I believe my polarity was reversed also. Didn't even know that was a thing. I had sustain after I lifted my foot, but not while my foot was on the pedal.
Steve_382 - Presonus Studio 68c, Studio One Artist 4, Roland A-800 Pro keyboard, plus various guitar stuff. Complete beginner on DAW software and not much better as a musician, but I really enjoy it.

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