David Nahmani

No. By default, that Expression routing in the Mod Matrix isn't routed to a target, which means it isn't doing anything. That means that the status of the 'Inv' button does not matter at all. But that Expression routing is unnecessary for Expression to work as expected: you can leave that Expression routing the way it is, or you can turn it off, or you can completely remove it from the Mod Matrix, and Expression will continue to work as expected in all three cases. If you download the Logic project file I shared, where I have an Expression ramp up using the factory patch as is, you'll see that it works as expected.

The 2i2 3rd gen is certainly a great quality/price ratio. In that price range, you can also consider Arturia which makes great products, or even the Universal Audio Volt 1, or some of the Presonus interfaces. I'm personally not a big fan of the M-Audio interfaces, and would recommend staying away from Behringer. But all in all, if the 2i2 3rd gen meets your needs then I wouldn't overthink it and go for it, it's a fine choice. 🙂

Great! Good to hear. 🙂 And thank you for letting us know what resolved this for you, this is very helpful for others with the same issue who will find this later.

No, you want it set to Keep so that's good. Do you see your tempo changes being recorded in the global tempo track?

Is your tempo mode set to Keep (below the tempo value in your LCD display)?

Expression is not disabled and should work out of the box. It does here. Try just drawing Expression data in the Automation pane of your Piano Roll and it should work as expected. I've attached the following Logic file if you want to try it: Expression-test.zip That Inv button in Sampler's Mod Matrix inverts the modulation source: Inv button: Invert the effect of the modulation Source. A negative value becomes positive, and vice versa. (Source: Use the Sampler Mod Matrix in Logic Pro for Mac) However that particular routing isn't actually complete: there is no target selected. Therefore it serves no purpose at all. You could turn it off (On/off button on the left hand side of the Ctrl#11 (Expression) label) or even remove it (select and press delete) and the patch would behave exactly the same.

Can you repeat this lag when editing if you quit Logic, and reopen it and open a brand new empty project with only one software instrument and one MIDI region?

Then I think that must be it, because I'm still in 14.1.2 here and ... I don't see the Drummer description pop-ups, even after unchecking and rechecking help tags. So I think there must be some incompatibility between how those descriptions work in Logic Pro and Sonoma 14.1 versions. Thanks for updating this thread with your findings! 🙂

Could you share the project? Use google drive or wetransfer.

Drummer uses MIDI articulations that determine the opening of the hi-hat notes. In order for the MIDI notes to react to mod wheel, you need to remove the articulations. In the Piano Roll, select all the hi-hat notes, Control + click a selected note and choose Articulation > - (dash symbol).

Yes unfortunately, I've noticed that here as well, and there's no way around it other than to restart the entire poll. 😞

Ko-fi offers a free (pay what you want) sizzling distortion plug-in, Ham-Burger: https://ko-fi.com/s/6e7ded34dc - I tried this one and it's actually pretty cool! 😄

Alright!! Good to hear you ended up finding out what it was, and thanks for letting us know. 🙂

A sound that is more complex than a sine wave can be deconstructed in the sum of multiple harmonics that are sine wave. That was the work of Joseph Fourrier: Fourrier analysis. It's similar to how any color can be deconstructed in a sum of Red, Green, and Blue values. If a complex sound has harmonics above 20 kHz and you sample the sound with a sample rate of 40 kHz, then you'll record all harmonics up to 20 kHz, but you won't record any of the harmonics that are above 20 kHz. However, since you can't hear them anyway, you don't need to record them! Think of every sound as a sum of pure sine waves. You can't hear any of the sine waves that are above 20 kHz, so if you filter them out, it won't make any difference to you. Take any record, and run it through an EQ that filters out everything above 20 kHz, and you won't hear any difference at all. So the idea behind the Nyquist-Shannon sampling theorem is that if you need to be able to record all kinds of sine waves (in order to reproduce any sound, no matter how complex) up to a certain frequency, you need to sample at twice that frequency.

If you're trying to record a 20 kHz sine wave with a 40 kHz sample rate then you'll record only two alternative values, one high and one low. After reconstructing an analog signal with the DAC, you'll get a square wave, however when you filter off the high frequencies you're back to the original sine wave.