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Just curious how the velocity of Garageband's keyboard works?
The velocity of Garageband's keyboard is of course not perfect. But it is better than no velocity.
Comments
My guess would be that it would work by sensing the time between first contact and full contact.. Because our fingers are roundish when they first touch the area would be tiny and as you push harder the area would get bigger.. Measuring how fast this area grew would give you enough info to calculate how hard someone is hitting the screen.. But I have no idea, I don't know if iPad/iPhone can even determine the touch diameter at all.. Just guessing :-)
Pretty sure GarageBand uses the accelerometer to detect movement. Never really tried but it should be more sensitive on a spongey surface than in a table.
Yep, accelerometer.
Would've been cooler if i guessed right, unfortunately I was wrong and now I feel like I babbled non-sense there. Hooray for that.
I know some devs are researching in that direction, so it is not non-sense. ;-)
Heh, thanks @Chapalo :-)
Maybe other apps should consider accelerometer. I mean apps like Soundprism, Musix Pro.
We've tried to do this 2 years ago and I've made a video about it. This might be interesting for you guys:
@Sebastian
Very informative video Sebastian. I've always felt that the humanise/velocity approach that you use in SoundPrism is the best & most predictable available. I make use of an iPad accessory by IPEVO (called the PadPillow) to get the most out of 'playing' my iPad - an almost perfect amount of 'bounce'!
http://www.ipevo.co.uk/
If anybody wants to buy one it's worth checking Amazon Marketplace as I got mine for roughly 25% off the retail.
jm
http://soundcloud.com/leftside-wobble
We have this in a beta version of Musix Pro (will be included at some point in the future). But as most people have found out from the other apps, it "kind of" works.
I think I read Cantor may use area sensing as a sort of after touch, but I think
I also read that Apple aren't too keen to approve apps that use this method.
I just asked a friend of mine this after having my mind blown using vel. sensitivity somewhere (Magellan?), and he seemed sure it uses the mic as an impact sensor, which made a lot of sense to me. If you look at how it's used for an app like the Impaktor drum synth, you see quite quickly just how sensitive that onboard mic is. Perhaps not for audio clarity, but I'm sure iOS makes it easy for the gain to be increased to the point where the iPad becomes like a big piezo disc, and extremely sensitive to even lightly touched impacts.
Anyway, that's been the most logical explanation I've heard so far. Wild stuff.
You'd need to be in a very quiet room to avoid background noises activating the feature.
WI Orchestra has a very nice touch responsivity, don't know how it's implemented, but it's reliably predictable in how it reacts.
I know this is an old thread, but I'm happy I was able to learn from the conversation. I just started using Logic's Remote app in tandem with Logic and became amazed when the iPad on my keyboard sensed velocity.
Looks like you guys who were saying it's because of the accelerometer are correct. You can test this by continuously tapping softly on the keys while moving the iPad as a whole-- the velocity will of notes will increase.
On the new iPhone 6s GarageBand now uses the new 3D Touch and there are extra options in Settings "Velocity Sentitivity". I'm guessing the next generation of iPads will also have 3D Touch.