Reaktor Trk 01 , something wrong with the filter

gentleclockdivider
gentleclockdivider Member Posts: 296 Advisor
edited May 22 in Reaktor

So I am playing with the demo of trk-01 and there is def. something really wrong the filter
When set to 10 Kh z, the frequency is actually the half of it , 5 Khz
When set to max of 16 Khz , the frequency is actually 11 Khz

Weird , so I doubled the sampling rate to 88Kh and intead , the filter now sounds even worse .

Now it's 8Khz when the cutoff is set to max of 16 Khz
Trk-01 was released 7 years ago and nobody ever noticed this , not even an update ?

1.jpg 2.jpg


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Comments

  • colB
    colB Member Posts: 1,082 Guru
    edited May 28

    Good catch.

    The internal of the knob is doing a linear crossfade between 10Hz and 22000Hz

    The audio processing code is using a logarithmic crossfade.

    The audio code also clips to SR/2 while the knob code doesn't.

    image.png

    If you replace the crossfade in the knob code with the one from the audio code, it works properly.

    Here's a pic showing the edit and the full breadcrumb trail to find both crossfades

    image.png

    EDIT: this fix is for the free 'kick' version, not the full version. The breadcrumb trail might be different in the full version. Not sure.

  • tetsuneko
    tetsuneko Member Posts: 884 Expert
    edited May 28

    NI should definitely fix this and give us an update. How this got through their QC, I'll never know..

    Should I post a bug report to NI about this? @Matt_NI ?

  • gentleclockdivider
    gentleclockdivider Member Posts: 296 Advisor
    edited May 29

    I noticed it after a 5min play with the demo , so I can't fix it .

    If people haven't noticed this after 7 years , says enough ….also about the QC of (certain ) N.I. reaktor products

    Good catch Colb

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