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Rangarajan

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Posts posted by Rangarajan

  1. I agree completely. I too have experimented with GPT3.5 API (waiting for access to GPT 4) and I have learnt that we should be cautious while depending on this system. It tends to generate a lot of incorrect stuff, at the same time appearing to be quite knowledgeable!

     

    I am sure these tools will improve over a period of time, but I feel they lack the "creativity" of humans. I don't want to wade into any controversy ...!

  2. Hi,

    Opusmodus team has done a great job in supporting L-system. I have been spending some time to understand this feature; seems quite powerful.

     

    I have just uploaded a blog post on this topic. Your comments and suggestions will be very much appreciated.

     

    Does OM implementation support the full functionality as outlined in this paper?

     

    - Rangarajan

  3. Thanks! I fully agree with your view on license fee, etc. 

     

    I guess it is possible to view OM as a Lisp-based Library for music synthesis, if you exclude the IDE, etc. It is perfectly reasonable for the library vendor to charge developers a "royalty", based on the number of copies of their application sold, in addition to the one-time license fee for purchasing the library.

     

    - Rangarajan

  4. Thanks a lot! "chord-interval-add" comes closest to what I want. 

     

    Stephane's suggestion would be ideal if we want all chords to be the same size. If we need chords of different sizes, "chord-interval-add" seems better suited.

     

    Coming to a related point, I would love to take advantage of the huge collection of predefined chords in the OM library. For instance, something like the following might be useful (hope I don't sound silly):

     

    (harmonic-progression '(maj7 add9 11 7s/9/b5) '(c4 major))

     

    This allows me to get different chord types in harmonic progression on a given scale.

     

    - Rangarajan

  5. Sorry if I wasn't clear. Maybe this will be clearer:

    I would like to generate a chord progression in C Major scale like this: I-vi-ii-V7-ii. Here the V chord is played as dominant 7th. How do I do this?

     

    Next, I want to use the different elements of the chord library in OM to generate a chord progression. How do I do that?

     

    Thanks,

    Rangarajan

  6. Hi,

    I noticed something strange a short while go and need your urgent help. I am sending the score from OM to Ableton Live, and noticed that when I send the key sequence <C2, C3, C2, C3...> via Port 0, Channel 1 to Ableton Live, it is received as <C1, C2, C1, C2, ...> within Ableton. I tried again with UVI Falcon (instead of Ableton) and it was the same behaviour! Why is this happening? Any fixes?

     

    - Rangarajan

  7. When I execute some code in the editor, trace messages appear in the Listener pane. Is there any way to disable the printing of these messages?  When I run a large piece of code, it seems to me that these debug messages introduce some delay before the actual code is executed. Of course, these are very useful for debugging, but, it would be nice to have an option to turn these off when not required.

     

    - Rangarajan

  8. Thanks to suggestion by Janusz, I have been able to solve my requirement thus:

    ;; Returns a list of pitches from the given list, satisfying the supplied noise
    ;; pitch-list => arbitrary list of pitches
    ;; noise => Any noise
    
    (defun noise-to-pitch-map (pitch-list noise)
      (mapcar #'(lambda (n) 
                  (nth n pitch-list))
              (vector-round 0 (1- (length pitch-list)) noise)))
    
    Examples:
    (noise-to-pitch-map '(c4 d4 e4 f4) (gen-white-noise 10 :seed 89))
    => (c4 f4 e4 c4 d4 e4 f4 c4 f4 e4)
    
    (noise-to-pitch-map '(c4 d4 e4 c5 d5) (gen-gaussian-noise 10 :seed 89))
    => (d5 d4 c4 e4 d4 e4 c4 d4 e4 d5)
    
    (noise-to-pitch-map (expand-tonality '(c4 major)) (gen-pink-noise 10 :seed 89))
    => (c4 d4 d4 e4 e4 f4 g4 a4 b4 b4)

     

    - Rangarajan

  9. Hi,

    vector-to-pitch is a very useful function. I want something quite similar with but with a small change.

     

    What it does now (from the doc):

    (vector-to-pitch '(g3 g4) (gen-white-noise 10 :seed 89))(vector-to-pitch '(g3 g4) (gen-white-noise 10 :seed 89))

    => (ab3 g4 eb4 a3 b3 eb4 g4 g3 gb4 e4)

     

    Instead of giving (low high) as the first argument, I would like to give, for example, a specific scale. Let us say that I want vector-to-pitch  to convert the generated white noise to pitches in Major Scale, with tonic of C4. Is this possible? 

     

    - Rangarajan

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