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Since iPad's IDAM output is locked to 44.1k should this dictate the sample rate used on a Mac DAW?

dbs08_8dbs08_8
edited May 12 in General App Discussion

I just started getting back into recording and using an iPad, in addition to Logic on a Mac. I had planned to start using 48k sampling rate and have some projects already at 48k recorded in Mac Logic (using other sources other than the iPad), but since IDAM appears to locked to 44.1k I assume the Mac will have to be doing some on the fly sample rate conversion to record any iPad instruments output as 48k? Back when I started using DAWs in the 90s, on the fly sample rate conversions were considered a must to avoid, though I’m sure they are better now but my ears have never been good at hearing more subtle audiophile differences if that’s all it is.

I’ve read a lot of iPad internal audio actually is 48k (and AUM seems to only allow 48k when I have tried it) so just just going through IDAM may already be a SRC down to 44.1 then up converting again to record at 48k on the MAC maybe getting to be bit too many conversion? Would it best to start recording at 44.1k just to accommodate the iPad and IDAM?

I also have read some comments about aggregate devices forcing the IDAM sample rate to 48k, but not sure if that is also just a conversion, no different than the DAW on the mac is set to 48k.

Otherwise I don’t especially have a strong preference if it is 44.1 or 48 except projects already started that way.

Comments

  • wimwim
    edited May 12

    Should iDAM dictate the sample rate? No
    Does it? Yes

    As far as I know there's no way around that.

    If you aren't getting garbled audio in a Mac DAW at 48K with iDAM then it has to be converting. If you can hear any difference due to successful conversion then you are a super human. I wouldn't worry about it. Start using your talents for spying in on super criminal conversations.

    However, I know I get garbled audio in FL Studio on the Mac if I don't have the sample rate matched. Ymmv.

  • SamuSamu

    So far I've not had any garbled audio on the M5 MacBook Air and my trusty 11" M1 iPadPro connected via IDAM which is sending 44.1k that gets converted to 48k if the project sample-rate is set to 48k.

    All we can do is to send Apple some feedback but as there's been no change in this area since IDAM was introduced I don't see that changing anytime soon unless there's some major new features being added to Core Audio for macOS 27, but we'll see that during this years WWDC'26.

  • FizzyLizzy27FizzyLizzy27

    Does the new Link Audio from Ableton also lock you into 44.1 kHz?

  • wimwim
    edited May 13

    @FizzyLizzy27 said:
    Does the new Link Audio from Ableton also lock you into 44.1 kHz?

    Link Audio doesn't, but the implementation of it in whatever app is doing the sending or receiving may. Link Audio isn't a thing on its own. It's a protocol and set of libraries for sending audio around. Just as host and plugin makers sometimes screw up around sample rate issues, so can they screw up with Link Audio.

    @Dendy's nifty plugin takes this into account and provides an option to send resampled audio if needed when there's a mismatch. I tried just now sending from the iPad at 48kHz to Ableton Live at 44.1. I didn't need the resampling option, and neither app had any problems even when I toggled it off and on. Live could be switched to other sample rates and it was all fine. Patterning behaved too.

    So there's a case where the sender and receiver are both well implemented. That may not always be the case.

    tldr; Probably most of the time there will be no restrictions, but not guaranteed in all cases.

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