Home › Forums › Help/Technical Questions › 22500 imported rhythm loops go out of sync after a while during playback along with recorded loops A & B

Viewing 9 posts - 1 through 9 (of 9 total)
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  • October 22, 2017 at 3:08 pm #85055
    PeatV
    Member

    Dear EHX team,

    i have imported some rhythm loops to my 22500 looper that i created in Cubase.

    When i play them along with the recorded loops A & B on the looper they slowly go out of sync after a period of time. I use the 22500 for jamming; rhythm guitar on loop A and bass on loop B; then soloing until forever.

    I set the tempo setting to the exact right values when i created the loop .wavs and also changed the value in the .txt file in the loop folder on the SD card.

    However, it seems to me that my own drum tracks doesn’t have the 100% exact time length. Maybe they are a tiny bit too short or too long. It feels like the rhythm snippet is repeated seamlessly one after another in a row without synchronization to the 22500, and is not placed on the first beat in the bar. So the minimal deviation multiplies over time and makes everything go off the internal beat of the 22500. Doesn’t the 22500 ‘quantize’ the rhythm tracks to the internal clock and bar lengths of the device?

    When i stop the playback and start it again the loops A & B are in sync again to my rhythm tracks. The ‘rhythm shift’ only occurs when i run the playback a longer time (during excessive soloing).

    Any idea to solve the problem? Please help.

    Thx and Greetings

    Peter

    October 23, 2017 at 1:34 pm #123256
    Flick (EHX Staff)
    Moderator

    There’s two things that you need to ensure while making .wav files for the 22500’s rhythm tracks: the length of the audio files are exact bar lengths (for example exactly 2 bars in length) and that the tempo in BPM that you create the rhythm tracks with is entered into the .txt file. You have done the second item but based on your description of what’s going on the first item is a little off. See if you can ensure that the .wav files are exact bar lengths. This might need to be done while bouncing the audio or at some earlier point while setting up the tracks in Cubase.

    November 1, 2017 at 1:05 pm #123282
    PeatV
    Member

    Thanks for your fast reply, Flick. Today i have done a little investigation on this and found out that the problem was in my overall project settings in cubase. There i had the sample rate set on 48.000Hz when working on my rhythm tracks. Every other point you mentioned i had right. I had placed the locators for the output area right at full bar lengths and in the export settings i had set 16-bit res and 44.100Hz sample rate.

    Then I have reimported the drum tracks that i had made before and saw that every track was a tiny bit too short (only could be seen on full zoom). This ‘shrinking’ seems to happen when audio is exported from a project that has a different sample rate from the output/export settings. Maybe this is normal but i didn’t know that. Just thought only the output settings really matter. So it was in the ‘setting up the tracks’ part as you presumed. Lesson learned.

    My cubase syncs to my audio interface so i had to set the master clock in its driver settings to 44.100Hz. A bit of correction work to the old tracks and now everything is looping on the beat into eternity… thanks for helping!

    November 1, 2017 at 1:32 pm #123283
    Flick (EHX Staff)
    Moderator

    Glad to hear it’s working now.

    June 9, 2018 at 1:41 pm #123972
    jsxosc
    Member

    I have observed exactly the same problem reported here; in fact I recently opened another thread with the same issue; I’ll check the sampling rate as you mention above. Thanks for posting your solution, I’ll see if it works for me.
    Cheers!

    June 11, 2018 at 1:32 pm #123976
    Flick (EHX Staff)
    Moderator
    Quote:
    I have observed exactly the same problem reported here; in fact I recently opened another thread with the same issue; I’ll check the sampling rate as you mention above. Thanks for posting your solution, I’ll see if it works for me.
    Cheers!

    Yes, make sure your bounced or exported files are at a sample rate of 44.1kHz and have 16 bit resolution.

    June 11, 2018 at 3:10 pm #123977
    jsxosc
    Member

    I did, and sample rate & resolution are fine.
    From the other hand, I was successfull at importing and using loops from the pack available for EHX 4500, and also from drum loops from other various web sources.
    All this makes me think that perhaps the self-made loops were not 100% properly cut. The good thing is that apparently my 22500 unit is not malfunctioning.
    Thank you!

    June 11, 2018 at 4:21 pm #123978
    Flick (EHX Staff)
    Moderator

    Are you importing the audio for the 22500’s Rhythm track or for LoopA or LoopB?

    June 13, 2018 at 6:31 pm #123981
    jsxosc
    Member

    rythm track, for sure

    -I also did the other way, through LoopA, just to see if it works (it does), but I didnt check syncronicity that way with LoopB or whatsoever-

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