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Observations on Jamstix 2

 
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acabreira
Grand Master Jam
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Joined: 26 Aug 2005
Posts: 223

PostPosted: Wed Aug 22, 2007 2:00 am    Post subject: Observations on Jamstix 2 Reply with quote

Well, after trying all day long to understand the logic behind JS 2, which is more different from JS 1 that I thought it could, there are some important things (at least to me, of course) that I´ve checked. I´ll try to be clear, but there are subtleties that I can hardly express in english. Here it goes anyway.

1) The ´Auto´ button in the brain says it issues an automatic recompose whenever the brain settings change, but even if the button is not active, the smallest change in the brain settings recomposes anyway. And in both cases, ´auto´ active or not, the Bar Editor doesn´t reflect the changes, I must click the bar in the Bar Timeline to see the changes.

2) The recompose button, although works all the time, does not show it´s changes in the Bar Editor imediately unless the bar is playing with the loop button or with the host. And if you play recompose with the song stopped, when you play the song the changes only appear the second time you play the specific bar. I´ll have to reproduce the exact steps to see in which specific circumstances it does happen, but I though every recompose should redraw the Bar Editor, isn´t it?

3) In the Bar Editor, every hat shows in the information line as Hihat closed, independent of the openness of the hat. Shouldn´t it show the openness of the hat instead?

4) Sometimes the brain produces left hand hits in right hand limbs and vice versa. This is a little complicated. Let me try to explain it better:

a) I have assigned tom sounds only to Toms 2,3 and 5. In the sound editor, although I have assined no sounds to Tom 4, it uses the Tom 5 sound, but Tom 1 doesn´t play at all.

b) I have only assigned left hand sounds, then in the sound editor right hand slots reproduce the left hand sounds. That´s expected behavior, but why only left hand sounds are produced in the right hand limb cells? It works like following: I set the brain in the fill editor to focus only snares, the it created rapíd left-right hand alternations of snare. When only ´snare left´ was assigned to a sound, the generator only created ´snare left´ sounds, in both limbs They all sounded, but when I changed and only assigned ´snare right´ to a sound, both left and right snares were created each in its respective limbs, but only ´snare right´ sounded, since no ´snare left´ sound was assigned. I´ll try to be a little more clear: If you assign only left hand hit sounds where it´s possible to assign right hand hit sounds to ther same piece, you can preview the right hand sound correctly in the sound editor, but these will not be created at all. But if instead you assign only right hand hit sounds in the sound editor, left hand hits don´t sound, but they´re are created. While the workaround is quite easy - assigning the same sound to both hands whenever it´s possible - I think JS is trying to predict the fact that in some instruments only one hand sound is sampled but inverting the logic here cause if it played left hand sounds when only right hand sounds were assigned it would work fine. And in the case of toms, it´s worse, for no prediction to unassigned tom 1 is made, but maybe it should be explicit that we must assign all the sounds for the brain to work correctly.

Please, forgive me if there´s something that´s not clear or has been covered in another post, I´m going to sleep now after an overdose of JS 2 Laughing

Thanks
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J van E
Jamologist
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Joined: 26 Nov 2005
Posts: 196

PostPosted: Wed Aug 22, 2007 2:42 am    Post subject: Re: Observations on Jamstix 2 Reply with quote

acabreira wrote:
2) The recompose button, although works all the time, does not show it´s changes in the Bar Editor imediately unless the bar is playing with the loop button or with the host. And if you play recompose with the song stopped, when you play the song the changes only appear the second time you play the specific bar. I´ll have to reproduce the exact steps to see in which specific circumstances it does happen, but I though every recompose should redraw the Bar Editor, isn´t it?

Pressing the COMP button prepares the bar to be recomposed the next time it is played. JS2 does ALL composing in real time. So pressing the COMP button while playback has stopped does not have an immediate and visible effect on the bar: only when you start playing again you will see the bar change in real time. This is just how it is designed.

The fact that changes only appear during the second playback is due (I think) to the fact that changes are made in real time and by the time they are made you are in the next bar already. So they DO appear as soon as they are made, but it happens mighty quick and you might only really see them well the next time around.

EDIIIIIIIIIIIIIIIIIIIITTTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!
Hm, well, I guess I was wrong because I just tested it with a fill: I pressed COMP and immediately saw the changes, even while not playing... Pressing COMP again didn't do anything after that: I had to play the bar first before COMP did something else again. Sorry for the confusion!
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acabreira
Grand Master Jam
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Joined: 26 Aug 2005
Posts: 223

PostPosted: Wed Aug 22, 2007 2:59 pm    Post subject: Reply with quote

I´ll bump this one cause I don´t think Ralph seen it. At least topic 4 seems to be a bug.
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Ralph [RZ]
Site Admin
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Joined: 02 Jan 2008
Posts: 13332

PostPosted: Wed Aug 22, 2007 3:19 pm    Post subject: Reply with quote

GROOVE and ACCENT are composed in real-time so clicking COMP has no visual effect until the bar is re-played and thus recomposed. For FILL it is different because fills are composed in one piece.

The AUTO button does work but if you are playing on fresh, empty bars then the brain MUST compose something and so uses the new settings. Try playing bars that are already composed, keep AUTO off and then change brain settings, you'll find that the composed bars do not change. If AUTO is on, they will change.

The HiHat closed is cosmetic, we'll fix that in an update to show numeric openess.

4a) Unload Tom2 and assign its sound to Tom1 and it will work. The redirection logic works that way.

4b) There are issues there. Thanks for the catch! I'm working on it!
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