Jump to content

length-modify


erka

Recommended Posts

 

With length-modify it seems that I can either modify notes or rests or random.

length-modify.pdf: 
type 'r (rest) or 'n (note) or '? (at random), if not specified random type is used.

 

Wouldn't :type 'all also be useful? 

I could use it for what I am doing now.

Now I realized it by calling :type 'n and :type 'r one after the other.

 

Is there another function that would modify all (rest and notes)?

 

Link to comment
Share on other sites

The function takes a string as input and returns the omn . Auditioning it will sound like a morse message. Setting :morse_output to t will output the real morse-message (for testing ..).

You can input any :pitch and  the morsecode loops over the :pitch or just change the pitch of the output

What I was looking for is way to change the basic unit. This is set in the map to s (1/16).

It is Between ;; make changes for non-default units and ;; prepare for morse output.

 

(defun text-to-morse-omn (text  &key ( pitch 'c4 ) ( dit_length 1/16 ) (morse_output nil)) 
    "converting text -> morse -> omn-length 
    reference: wikipedia
    default time unit is 1/16.
    International Morse code is composed of five elements:
    short mark, dot or dit (  ▄   is one time unit long
    long mark, dash or dah (  ▄▄▄  three time units long
    inter-element gap between the dits and dahs within a character: 
    one dot duration or one unit long
    short gap (between letters): three time units long
    medium gap (between words): seven time units long "

 

        (if (or (stringp text) (stringp (car text))) () 
          (return-from text-to-morse-omn  "text must be string or string in list"))


    (let* 
            (
        ( char_lengths_map
        ;; includes the dit between the dits and dahs 
        ;;  and the 3 dits for end of letter
        '(
                ( a ((s -s s== -s==)) ) 
        ( b ((s== -s s -s s -s s -s==))  )
        ( c ((s== -s s -s s== -s s -s==))  )
        ( d ((s== -s s -s s -s==))  )
        ( e ((s -s==))  )
        ( f ((s -s s -s s== -s s -s==))  )
        ( g ((s== -s s== -s s -s==))  )
        ( h ((s -s s -s s -s s -s==))  )
        ( i ((s -s s -s==))  )
        ( j ((s -s s== -s s== -s s== -s==)) )
        ( k ((s== -s s -s s== -s==)) )
        ( l ((s -s s== -s s -s s -s==))  )
        ( m ((s== -s s== -s==)) )
        ( n ((s== -s s -s==))  )
        ( o ((s== -s s== -s s== -s==)) )
        ( p ((s -s s= -s= s== -s s -s==))  )
        ( q ((s== -s s== -s s -s s== -s==)) )
        ( r ((s -s s== -s s -s==))  )
        ( s ((s -s s -s s -s==))  )
        ( t ((s== -s==)) )
        ( u ((s -s s -s s== -s==)) )
        ( v ((s -s s -s s -s s== -s==)) )
        ( w ((s -s s== -s s== -s==)) )
        ( x ((s== -s s -s s -s s== -s==)) )
        ( y ((s== -s s -s s== -s s== -s==)) )
        ( z ((s== -s s== -s s -s s -s==))  )
        ( 1 ((s -s s== -s s== -s s== -s s== -s==)) )
        ( 2 ((s -s s -s s== -s s== -s s== -s==)) )
        ( 3 ((s -s s -s s -s s= -s= s== -s==)) )
        ( 4 ((s -s s -s s -s s -s s== -s==)) )
        ( 5 ((s -s s -s s -s s -s s -s==))  )
        ( 6 ((s== -s s -s s -s s -s s -s==))  )
        ( 7 ((s== -s s== -s s -s s -s s -s==))  )
        ( 8 ((s== -s s== -s s== -s s -s s -s==))  )
        ( 9 ((s== -s s== -s s== -s s== -s s -s==))  )
        ( 0 ((s== -s s== -s s== -s s== -s s== -s==)) ) 
        ( ä ((s -s s== -s s -s s== -s==)) )
        ( ö ((s== -s s== -s s== -s s -s==))  )
        ( ü ((s -s s -s s== -s s== -s==)) )
        ( ß ((s -s s -s s -s s -s s -s s -s==)))
; french letters can be easier added with a french keyboard 
        ; punctuation is ignored by text-map and this function

        )) 
        ( mapstr (text-map char_lengths_map text))
        
        ;; remove last rest from letter
        ;; to add 7 dits later
        ( removelastrests (if (not (listp  (car mapstr)) ) ; if only one word
                 (list ( butlast mapstr 1))
                 (loop for i in mapstr collect  (butlast i 1)))) 
            
        ;; add 7 dits for end of word. Needed for decoding into real morse maybe later
        ( add7  (loop for x in removelastrests
             collect (append x '(-s======))))

        ;; make omnstr
        ( default_omnstr (make-omn :length add7  :pitch (list pitch) :span :length))

 

                ;; make changes for non-default units
                ( s_unit 1/16) ; default for 's
                ( u_unit dit_length) ;user set unit
                ( oper (if (>=  s_unit u_unit)  'times 'divide))
                ( mult (if (equalp oper 'divide) (/ s_unit u_unit) (/ u_unit s_unit)))
                ( mod_notes (length-modify mult default_omnstr :type 'n :operator oper :count 'all)).      ;first run of length-modify for notes
                ( dit_modified_omn (length-modify mult mod_notes :type 'r :operator oper :count 'all))   ; another run for rests

 

                ;; prepare for morse output
        ( omn_morse_map
        '(( s "." )
          ( s== "-" )
          ( -s== " " )
          ( -s====== " / ")))
        ( mapstr (text-map omn_morse_map default_omnstr))
        ( morsestr (loop for i in mapstr 
              collect (eval (cons 'concatenate (cons ''string i)))))

            ) ; end of variablelist

            ;; decide output due to :morse_output t or nil
            (if  morse_output (format T "~a" morsestr)  dit_modified_omn) 
    ) ; end let*


(setf ttmo_ret (text-to-morse-omn "bla" :pitch 'c3 :morse_output nil) )

=> ((e. c3 -s c3 - c3 - c3 -e. s c3 - e. c3 -s c3 - c3 -e. s c3 - e. c3 -q..))

 

--------------
My first function I am writing in opusmodus and lisp. I learned a lot doing it. That was the main purpose. And maybe make strange music with it.

Maybe some morse-trained person will get the message. 🙂 

I had something similar written for max-for-live mainly in javascript to learn all the functions needed to put notes into a clip.

And had some musical fun with it.

 

 

Link to comment
Share on other sites

Thank you o-e. That is much better. You didn't write this including doc this afternoon, did you?

length-diminution and text-to-letters I didn't know.

I  learned a lot by going the complicated way.

 

Do you know how to convert an input of length-symbol to ratio? 

In your function I think length-diminution is handling this. You can set :pulse 's .

 

Link to comment
Share on other sites

(encode-seq 't)  => t

(encode-seq (list 't)) => (1/32)

 

When the user inputs in my example :dit_length 't ,I would write 

(car (encode-seq (list :dit_length))) => 1/32

to get a value for calculation.

Link to comment
Share on other sites

I rewrote the function, so I can enter any length-symbol or ratio and don't have to make complicated calculations. Looks good to me and does what I wanted.

I don't use length-modify anymore. But still wonder way 'all is not a feature.

If you have any suggestions regarding style or other optimization please let me know.

I had entered this forum in 2015 but was into other things until release of v3. In case you are wondering. Just starting again with lisp and opusmodus.

I made a short score and my wife smiled while listening. 🙂 

 

text2morse-length.opmo

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

Terms of Use Privacy Policy