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Please help newbie with a simple idea

Discussion in 'Building With Reaktor' started by outthewindow, Nov 7, 2009.

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  1. outthewindow

    outthewindow New Member

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    Hi there,

    I recently bought the Komplete 5 package and have tried to dig into Reaktor 5 a little. So far, with little success. I've done all the "my first synth" tutorials and some others labled "for beginners" but I'm still rather intimidated by the sheer mass of seemingly undocumented elements that are used even in the supposedly simple tutorials. I've done some (web) programming in the past and I've messed with Supercollider quite a bit (which although being freeware seems much better documented than Reaktor) so I'm not a complete beginner.

    My questions:

    Is there a reference of all Reaktor elements? I haven't found one yet.

    I'd like to build something like the Reagate for Reaper which is a simple gate that sends midi Notes if the signal goes above the threshold. My idea would be to trigger samples from beatboxing with a mic. This would obviously involve some kind of frequency analyzing/splitting. I've gotten pretty close to a kick/snare/hat thing with a combination of Reagate and Reafir but I'd like to do this in Ableton Live. Does something like this already exist in Reaktor? If not, who would be so kind as to point me into the right direction? Right now, I don't even know how to start building a simple gate. I've downloaded some gate fx from the library but they all seem too advanced for me to find a beginning. What would be the first module/macro to look at if you want to build a gate effect?

    Thanks a lot in advance,
    Axl
     
  2. PeterW

    PeterW NI Product Owner

    Messages:
    182
    ReaGate and ReaFIR are available as stand alone VSTs, could you use them in Live ? Looks like they are for Windows which may be a problem.

    http://www.reaper.fm/reaplugs/

    I think ReaFIR would be very difficult to clone in Reaktor.

    Building a Reaktor Gate like ReaGate should be possible though. Maybe you could modify the simple gate I built recently. It would require some LP and HP filters before the side chain input and the addition of a midi output macro.

    https://co.native-instruments.com/index.php?id=userlibrary&type=0&ulbr=1&plview=detail&patchid=8818
     
  3. outthewindow

    outthewindow New Member

    Messages:
    12
    Yeah, I forgot to mention in the first post that I'm on a Mac so the VST versions of the Reaplugs don't work for me.

    I downloaded your noisegate and I'm getting a faint idea of how it works ;-)

    Also, I've loaded the drum samples to a sampler module. But so far, I've not managed to turn the output of the noisegate into a gate signal for the Sampler. This is how it looks:

    http://img503.imageshack.us/img503/9960/bild1y.png

    This seems to cause the sample to be triggered very quickly even when the gate is closed resulting in some ugly noise. In the description for the Audio-to-gate converter it says: "With a rising edge at the input the Gate ouput signal is switched on..." What does this mean? And why is there an Audio signal even when the gate is closed?

    I don't really get what the Env output of the gate is for. Also, why does the Sampler only have one output, even if status: mono is deactivated?

    Lastly, do I need the Voice Combiners?

    Again, thanks for helping me.
    Cheers,
    Axl
    ---
    Okay, the "rising edge at the input the Gate" probably means a zero crossing. I've managed to trigger the samples in a reasonable tempo using an LFO. It seems I need another module between the gate and the AudioToEvent module. But which one?
     
  4. sowari

    sowari Moderator Moderator

    Messages:
    27,759
    have you looked at the uploads of Bertrand Antolin in the User Library?

    sowari
     
  5. outthewindow

    outthewindow New Member

    Messages:
    12
    Yes, I've tried Voicekeys 2 yesterday and it didn't work for me. It spit out a sequence of midi notes only very loosely related to what I was acutally singing/playing no matter what values I fed it. The result wasn't useful.

    I just looked at its structure and the audio that's fed into AudioToMidi is processed by a core macro called AMDF2PG which i don't understand at all.

    But I don't need a pitch detection but something much more simple: When the audio input level is over a certain threshold one predefined midi note on fires, when the level goes below the threshold a corresponding note off is played.
     
  6. PeterW

    PeterW NI Product Owner

    Messages:
    182
    Axl,

    I’ve added a few things to the noise gate to make it behave a bit more like ReaGate. I also included the sampler to show how you can trigger it. Leaving the sampler out and connecting the Noise Gate’s Out to Reaktor’s main L and R outputs would make it into a basic mono ReaGate ensemble. I have just put this together very quickly and have not tested it fully, but it should work OK. Think of it as a place to start experimenting. This ensemble should also send midi note on/off events to Reaktor’s midi output when the input signal crosses the noise gate’s threshold. Like ReaGate you can set the note sent at the midi output.

    To answer some of your questions...

    My noise gate has a separate side chain input and an Envelope output to make it a bit more
    Flexible. Normally the audio would be fed into In and SC at the same time and the gated
    output would come out of Out.

    The Audio-to-gate converter works by sending an event at it’s G output every time the audio
    signal at In crosses zero in a positive direction. The value of the event sent out is equal in value
    to the signal at it’s A input.

    The sampler is a Mono not Stereo sampler so only ever has one output. The Mono in this case
    refers to it being monophonic not polyphonic.

    If the ensemble only processes one voice, monophonic, then the voice combiners are not
    needed. Leaving them in does not really hurt though.
     

    Attached Files:

  7. outthewindow

    outthewindow New Member

    Messages:
    12
    Thank you very much, Peter. I just tried your Instrument and it works great. Although I get sound from the sampler or midi ouput only when the noise gate output is connected to one of the instrument's ouputs. I'll probably be able to fix this with a mixer module but I don't get the reason it behaves this way.

    Anyway, now I'll see how far I can get with three gates and some frequency splitting.

    :cool:

    Cheers,
    Axl
     
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