inverting MIDI notes, any implementations?

[thomasbuckler]

want to be able to have MIDI, like this:



and flip it to this:



can anyone help me. I really think I remember seeing a M4L effect that performed this flip.

[broc]

Look at the M4L lesson "10 MIDI Note Operations".

[thomasbuckler]

this didn't seem to work for me. Just shifted the notes down an octave.

[toscanini]

Hm. I have looked into that lesson, I couldn't figure out much from there. Look at the LOM, the operations on MIDI notes might look off-putting but they pretty much work as described. You'll always need to go through
-point live.path at the clip in question
-use "select_all_notes", "get_selected_notes", "replace_selected_notes"

here the only parameter you'll want to change is pitch. The only little trick is that with the symmetry thing the value can easily go off limits, and that would mess up the whole thing. (If notes count isn't right, the whole system stops working)
So here's a basic version:


<pre><code>
----------begin_max5_patcher----------
1436.3oc0Zt0jZxCF.9Z2eEYY5k1cHIDNz6999az1wAgTMc3fCDr61N8+dCI
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SPxtPe46YKQ0KJn50x3vQH0qLEBFrezsRWSxHEcgEvhbkqDOhuTLiB1O5Fk1
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aeBhLw8okkI3HGlARvRSZjmbWsybuczXHsmMgF6VYCFO0c1PL3uO8OfosjlD
-----------end_max5_patcher-----------
</code></pre>

[thomasbuckler]

I just cannot get this to work. can you provide further help?

Hm. I have looked into that lesson, I couldn't figure out much from there. Look at the LOM, the operations on MIDI notes might look off-putting but they pretty much work as described. You'll always need to go through
-point live.path at the clip in question
-use "select_all_notes", "get_selected_notes", "replace_selected_notes"

here the only parameter you'll want to change is pitch. The only little trick is that with the symmetry thing the value can easily go off limits, and that would mess up the whole thing. (If notes count isn't right, the whole system stops working)
So here's a basic version:


<pre><code>
----------begin_max5_patcher----------
1436.3oc0Zt0jZxCF.9Z2eEYY5k1cHIDNz6999az1wAgTMc3fCDr61N8+dCI
nKtJwnBYzK1ES.w27j2yvedZlyxxWo0Nfu.9JX1r+7zrYxoZmXV23YN4wulj
EWKuLmjx7bZA2Yt5bb5qb4770TPQImBRJaJ3f7lZNXIETwVslOGvW2TCZujj
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Jkgxk+7yHxta+OJK3Ew4T4o9uJVbF3+KyR6e5Z1ukmF1dKUSWzjyJxnb4pE9
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SPxtPe46YKQ0KJn50x3vQH0qLEBFrezsRWSxHEcgEvhbkqDOhuTLiB1O5Fk1
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aeBhLw8okkI3HGlARvRSZjmbWsybuczXHsmMgF6VYCFO0c1PL3uO8OfosjlD
-----------end_max5_patcher-----------
</code></pre>

[toscanini]

Have you copypasted the code into a new max midi effect? Then, click the live.device for security and it should be up and running.

[broc]

I can confirm that the patch from toscanini works for me.

Alternatively, here is a simple solution based on the M4L lesson mentioned above.
(it assumes that all clip notes are selected)

<pre><code>
----------begin_max5_patcher----------
1058.3ocyX1ziZiCFG+L7ovMpGonXm2fdp6dY0JscOr6wQiFYRdXF20wNJwP
ospe2WGmDHvjPxLL3hFIBX67L+yum2ryOlNwYkbGT3f9H5NzjI+X5jIlgJGX
R8um3jR2EyoElk4jBEEzGAmYUyofcJy3EfB8dbyvhMoLAGTl6gTO3ZoPUv9N
TNF1ct6g0J2nZVLtdzLpJ9Il3wGxgXUk.wjE5aBQ78Ku3sr7Sb3bWz802SkY
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8yfRVNjAhjNoB9MhJKHFnDYXSfqAJKdwPIzdP4ceP6IitpQJ0LoNPIZXlvDp
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MwulG4yyu81TiHuxy74YwC8kqkD71.FxvfwbunfnK3zMd91sBTUsPSaaKD5f
iBurPGueEzAEfVykTUnOBi9j5o7MH2qb7T0aPXQUCM+fWTesdCsH1CdJDW+W
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bjczAMm.EJlX+APu6fCr0hdhkj.h1awLkkjIYBUsHP22oCcrZprYOhLflNQ3
WaMcBB5VSk6T1lZJ71y2U1FYXMEZWMMpXbe6Fi6eCl2Ml3Irm80D9FjSdCoo
eAbhbawonwDNEZ+VKCoI6VIXLEBBrphBFghrqaaTEl7sejzPElVZUIs7lyuM
lrsnATzQuFO2Ys9n8Kt6b5V+ieN8+Abja7A.
-----------end_max5_patcher-----------
</code></pre>

[crumhorn]

Posted this rubbish without testing it - my bad.

see later post for working version.

[broc]

@crumhorn
yes, operation in real time would be very simple, but I suppose the OP wanted "batch" inversion of existing midi clips.

[thomasbuckler]

Pd patch looks really simple. And I wouldn't mind a realtime one like that. Anyone know how to port that to m4l?

[toscanini]

Yes. The exact same thing as on the PD drawing

_____________________

@broc, thx for your example, I am not a big fan of the "official" abstractions but jit.matrix looks very interesting for working on clips. I'll definitely look into it...

[Machinate]

no, it's nowhere near the pd patch - m4l objects and cables are antialiased for a cleaner, more smooth sound.

[crumhorn]

Fixed a bug in my earlier post.

[broc]

Fixed a bug in my earlier post.

In your patch the '-' operation is not triggered on the left ("hot") inlet. So in Max you wouldn't get any output.

Does it work differently in Pd?

[crumhorn]

Fixed a bug in my earlier post.

In your patch the '-' operation is not triggered on the left ("hot") inlet. So in Max you wouldn't get any output.

Does it work differently in Pd?

Whoops - My Bad !!!

This is what comes of only testing code in my head.

This one works and is properly tested - promise!



or alternatively: