TR-808 uniPulse, velocity and accent

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  • #8468
    Anonymous

    Hello,

    I have my first TR-808 coming in the mail, and am thinking of adding a uniPulse. How does uniPulse velocity work with TR-808 accent? If I understand correctly, the traditional TR-808 accent does more than raise the volume, it also changes the timbre. Is this timbre change triggered at some midi velocity threshold? If the accent was triggered, is it global or per voice?

    Just trying to understand the uniPulse features before I make the purchase, and get the labor done to install it.

    Sincere thanks,
    Jeff

    #8469
    tubbutec
    Keymaster

    Hi Jeff,
    In an unmodified TR-808, accent uses a higher amplitude pulse to trigger the sounds. The trigger voltage without accent is 5V and the global accent can be adjusted between 5 and 15V.

    UnPulse uses the same trigger shape and voltages. However, here velocity controls the pulse voltage and thus you get full control over each instrument independently. So it behaves like the original accent but with more control and per-instrument.

    So to answer your question about timbre change: Yes, it is of course still there. If you send a note with full velocity, you will here the same sound as with accent and the accent knob adjusted to full. If you send a lower velocity value, it is like turning down the accent amount knob.
    As an added bonus, you can actually trigger with lower volumes as well which creates sounds that can not be played with the unmodified instrument. As you decrease the Snare trigger voltage below 5V, the “Snare” part of the sound starts to disappear leaving only the “drum” part. – Just like with a real Snare!

    #8470
    Anonymous

    Hey Tubbutec,

    Beautiful. UniPulse sounds like a great product and I’ll be buying one! Thanks for answering my questions.

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