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o_e last won the day on December 16 2017

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About o_e

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  1. Hi, When I write a file to disk with the plot functions (e.g. pitch-list-plot), and I print out that plot in DIN A4 Landscape size the resolution is poor. Is there a way to change the resolution/size of the .png that is written? Thanks! ole
  2. o_e

    Length-Legato opposite function

    You are welcome! Maybe Janusz can chime in and tell us something about how to handle tied notes in functions like this. I really would like to know that!
  3. o_e

    Length-Legato opposite function

    Hi Julio, I've found two problems. The weird one you had I think I could find and solve, but the function also does not handle tied notes properly and I have no idea how to remedy that. That goes waay above my hacking abilities :-) (length-staccato 1/16 '((e. c4 eb4 fs4 a4 tie) (s a4 e. cs4 e4 g4 e bb4 tie) (e bb4 e. d4 f4 gs4 s b4))) -->((s c4 -e s eb4 -e s fs4 -e s a4 -e) (s a4 cs4 -e s e4 -e s g4 -e s bb4 -) (s bb4 - d4 -e s f4 -e s gs4 -e s b4)) Nevertheless the code with the one correction, so it's not perfect but maybe somehow useful for you.. best ole (defun length-staccato (n alist) (let ((newlengths (loop for i in (omn :length (flatten alist)) when (> i n) append (list n (* -1 (abs (- i n)))) else collect i))) (if (omn-formp alist) (omn-to-time-signature (make-omn :length newlengths :pitch (omn :pitch alist) :velocity (omn :velocity alist) :articulation (omn :articulation alist)) (get-time-signature alist)) newlengths)))
  4. Did you see my workaround in the post mentioned by André (to lock the smpte of the track and then change the overall tempo in Logic)? Now I'am working with Reaper (https://www.reaper.fm/ ) which is worth to checkout, very cheap and unbelievable powerful (a bit of a learning curve I admit), no problem to change the tempo of every midi file seperatly.. best ole
  5. o_e

    Length-Legato opposite function

    Hi, Just a minor improvement, the function is now also working with sublists :-) best ole (defun length-staccato-lists (n alist) (let ((newlengths (loop for i in (omn :length (flatten alist)) when (> i 0) append (list n (* -1 (abs (- i n)))) else collect i))) (if (omn-formp alist) (omn-to-time-signature (make-omn :length newlengths :pitch (omn :pitch alist) :velocity (omn :velocity alist) :articulation (omn :articulation alist)) (get-time-signature alist)) newlengths))) (length-staccato-lists 1/16 '((q e4 mp q tasto q -q q q)(q e4 mp q tasto q -q q q))) -->((s e4 mp -e. s e4 tasto -e. s e4 -e. -q s e4 -e. s e4 -e.) (s e4 -e. s e4 tasto -e. s e4 -e. -q s e4 -e. s e4 -e.))
  6. o_e

    Velocities other than symbols

    thanks for the quick answer! So the floating point numbers velocity ranges from 0.1 to 0.99 or how do it relate to the 1-127 midi steps? I want to create an as-smooth-as-possible crescendo from the lowest possible value to the highest over x steps.. Can you point me to some more information about 'floating point numbers velocity'?
  7. Hi, I have a list of 30 midi-velocities that I want to map to 30 pitches, how can I do that without converting the velocities into symbols? Is that possible in OM (it is not for human players but for virtual instruments)? (setf vel '(1 5 10 14 19 23 27 32 36 41 44 50 53 57 62 66 71 75 79 84 88 93 97 102 105 109 114 118 123 127)) converted to symbols it looks like: (ppppp ppppp pppp pppp pppp ppp ppp pp pp pp p p mp mp mp mf mf f f f ff ff fff fff fff ffff ffff ffff fffff fffff) which is not as 'smooth' as I want it..but make-omn seems to handle only velocity-symbol or am I missing something? thanks for help!
  8. (loop for x in '(1 2 3) for y in '(a b c) for z in '(4 5 6) collect (list x y z)) hth ole
  9. o_e

    muting every other note

    I think I know what the problem was, I can not copy directly from the browser. 'Text Wrangler' shows me lots of otherwise hidden signs that confuses OM and that I have to remove first. Sorry for the noise. That was probably the same problem with Yuichis Code.. edit: Yes ideed!
  10. o_e

    muting every other note

    Dear Torsten, Thank you very much for your solution. It looks very promising, in a good sense simple. Unfortunatly, when I tried to eval your "cut-holes" function it throws an error: Error: ((= b 0) (* l -1) l) can't be destructured against the lambda list (ccl::test true &optional false), because it contains 5 elements, and at most 3 are expected. and I could not find out whats wrong. What am I missing? ole
  11. o_e

    muting every other note

    Hi Yuichi, Thanks for your efforts! Unfortunatly the listener gives me a 'no current expression' when I try to evaluate the 'skip-notes' function and I do not find what is wrong at first glance. Maybe you can repost your code using the '<>' code-brackets in the posting window. Not sure if this helps though. best ole
  12. Hi, I want something rather simple, a sort of sieve, how can I achive that? Lets say I have a melody like (q c4 e d4 e e4 q. f4 e g4 q a4 b4) and I want to mute every other note, so the result would be: (q c4 -e e4 -q. e g4 -q b4) or every third note like: (q c4 e d4 -e q. f4 e g4 q a4 -q) and it would be great to have an offset.. thanks! ole