• nicnut

    @jameslo

    i am doing something similar. The beat wavering is really only noticed over long time periods, like longer than 2 minutes. What I am working on now has a fast bpm, 154 and my metro is counting 16th notes of that, so it's pretty rapid. I am getting almost no beat wavering that I can see with this. But I did make some loops and i am over dubbing using Ableton, sending Pd audio into Live. So far everything is good.

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  • nicnut

    @jameslo Hey. I think I'd like to try and keep all the timing in Pd. It's a project with lot's of algorithmically generated rhythms and I don't want to lose that aspect of i. I want to use Logic just to mix and arrange everything. But thank you for the suggestion.

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  • nicnut

    @whale-av ok thank you for the suggestions. I tried recording again last night and had a little more success. I tried having the main metronome everything is based on go at a much faster rate and everything that relies on it will subdivide off that. I'll keep experimenting with this. I'll look into vline~ too.

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  • nicnut

    Hi Everyone,

    In the last year I have recorded a few tracks using Pure Data and I am exporting them into Logic to mix them. I notice that the BPM tempo wavers. For example, if I have a tempo of 150 bpm, when I export the tracks to Logic it might have a tempo of 149.82 for a few bars, then 149.91, then 149.81, etc. it always goes a little slower in a seemingly random way. Over the course of a large number of measure it is way off the tempo. I know this because I have a kick drum pattern that always attacks on a certain beat and I can see it’s off.

    I have heard a few other people mention this issue, but it has never really been an issue for me until now. Does anyone have any strategies for dealing with this? I am sequencing a few elements and I want them all to be in sync, drums, a bass part, etc. And all the various drums themselves, like a kick drum, snare drum, hi hat, etc.

    I am using regular metro objects all starting from a single message that is sent to the different metronomes. Should I try and use all audio rate timing or something similar?

    It is not easy to notice the tempo wavering by listening, but sometimes I think I can notice it too, and it’s sort of weird rhythmic feel as well.

    Thank you in advance for any advice.

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  • nicnut

    Thank You @ddw_music and @whale-av. I still haven't tried these solutions out, but now I have a few to try. I will start with the midi pipe method and then these others.

    Thanks, I will post how this works out or which method is easiest to implement.

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  • nicnut

    Well I have a bunch of Midi controllers and it happens whenever I plug in more than one. I have two other ones on Channel 3 and 4 and If I plug them both in I have a similar problem with the wrong channel coming up for one of them. But like I said, i don't have this problem in Max or any other software, it's a unique problem with Pd.

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  • nicnut

    @jameslo Yes it's kind of weird to have one device with 2 midi channels.

    It has two teensy microcontrollers in it, each one is a different midi channel.. I could have made it with one teensy if i know what I do now, but at the time that seemed easier. They both have a usb cable that goes into a usb hub in the midi controller, and I have one usb cable coming out.

    i'm making another one now and it will just be with one teensy

    Here's a demo video.

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  • nicnut

    @whale-av OK thanks I'll try the midi pipe!

    @jameslo they come up as two seperate devices

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  • nicnut

    HI and thanks for the info. That makes sense about the 1-16, 17-36 thing, because the other midi controller always ends up to be channel 17, 18 or 19.

    i don't think it's a Mac OS problem, because when I use Ableton live or Max the midi channels come in correctly.

    @jameslo, Yes, the order that the devices appear seems to change with the midi channel number. I have a device, that I made, that operates on two midi channels, 1 and 2. It only has one USB cable connection so I can't plug them in separately. So it's kind of arbitrary which midi channel gets displaced.

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  • nicnut

    Hi,

    This has been a pain for me for awhile. When I plug two or more midi controllers into my Mac Pd will get the correct channel number of the 1st controller, but always assign a seemingly random number to the 2nd channel number.

    I am always on midi channel 1 and 2. Right now my Mac thinks I am on channel 2 and 17.

    I just wanted to ask, because I am switching back between an RPi and a Mac and having to change every ctlin and ctlout object just to work on my patch for a few hours is a real drag.

    If any one knows a way to resolve this please let me know.

    Right now I am on Pd 51.4 and Mac OS 10.13.6

    Thanks, Nick

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