Home Forums The DJ Booth Going from Beatmixing to real speed

This topic contains 8 replies, has 4 voices, and was last updated by  deathy 5 years, 1 month ago.

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  • #2064162

    Dj JazzyPete
    Participant

    Just finished the excellent Dow to Dj Quick Video course ..One thing Im missing .. I get beatmixing ..but after beatmixing two songs using sync how and when do I change the new track to normal speed .. At the moment the beatmaching is fine but sounds crappy when the vocals of a track come though too fast or slow .

    #2064221

    DJ Vintage
    Moderator

    hmmm .. you sure you have keylock on? The vocals should sound fine after beatmatching.

    Unless …

    a) you have keylock off
    and/or
    b) you are going outside the 3% scope

    In all other cases, with keylock on the vocals sound exactly the same as at the original speed, just a tad faster/slower. The crowd most likely won’t notice.

    #2064551

    deathy
    Participant

    Even more than 3% of speed difference with keylock on will be recognizable as fast, but not necessarily sound bad.

    #2064661

    DJ Vintage
    Moderator

    Hence the 3% 🙂

    #2064712

    Dj JazzyPete
    Participant

    Yeah no Keylock was the problem BIG THANKS for that advise ..know it was something small i missed out on..yeah some tracks sound a bit bit fast still ..yeah over 3 percent

    #2064741

    DJ Vintage
    Moderator

    Glad you tackled it.

    General consensus is that 3% difference is about the norm for beatmatching without audible consequences (there is also more CPU power needed when you speed up/slow down a track more and artefacts can appear, which are audible).

    So unless it’s for creative purposes, staying under 3% is good practice.

    Just my two cents.

    #2064821

    deathy
    Participant

    I also find that speeding up can still sound better to much higher speeds than slowing down (with keylock on, of course). Some tracks, 18-20% increase in speed sound just fine, but a drop of more than 8% sounds terrible to me… too draggy.

    #2065071

    Tuomas Helander
    Participant

    Thats because when speeding up, the SW just cuts bits and pieces out of the audio, when slowing down, it has to fill those gaps… with what?

    #2065111

    deathy
    Participant

    Well, that’s simplifying it a lot… I know how to write the algorithm, it’s not just cutting bits out, that would make for a god awful noise as you would have random jumping around in the sample, and when you expand it you DO have content to fill with – it’s tricky, but it’s actually not about the algorithm, it’s just about the way it sounds – slowing down too much just has a draggy feel to it.

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