Home » Archimedes archive » Acorn User » AU 1994-04.adf » !StarInfo_StarInfo » Smith/!Compose/!Readme

Smith/!Compose/!Readme

This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.

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File contents
!Compose  Version 2.1 by Mike Smith (c) AU April 1994

!Compose is an automatic composition program that relates 
musical sounds to visual patterns on the screen.

The program is totally menu controlled, using the mouse to 
select options and change parameters.  Although not multi- 
tasking, it is initiated by double-clicking on its 
file-icon and will return to the DeskTop by selecting 
"Quit" from the MAIN MENU.

Menus are arranged hierarchically.  Clicking the left 
button, <select>, on an option will, if appropriate, 
display a lower menu.  Pressing the middle button, <menu>, 
returns to the next higher menu.  Thus the MAIN MENU can 
always be accessed by repeated clicks on <menu>.  

Current options are highlighted if "on".  Parameter values 
are shown and can be adjusted up or down by clicking 
<select> on "+" or "-".

Pressing the right button, <adjust>, will pause or restart 
the visual display and music, but the various menus can be 
accessed, and options or parameters changed at any time.

The menus are reasonably self-explanatory.  A little 
experimentation will soon familiarise you with the 
different effects possible.  !Compose is basically a 
program to explore and discover fascinating visual, 
rhythmic and musical patterns as you go.


PATTERNS

There are four visual modes accessed from the MAIN MENU:

"Mandelbrot", the familiar fractal, using a full 256 
colour tiling algorithm, giving progressively higher 
resolution.

"Julia", which is related to the current Mandelbrot screen 
by moving the cursor with the mouse to the desired 
position and pressing <select>.

"Brownian", which simulates molecular motion and displays 
it in various forms.

"Bouncer", an animated vector line display with adjustable 
parameters.

"Zoom" allows a small area of a Mandelbrot or Julia set to 
be enlarged.  A square boundary can be moved with the 
mouse, reduced in size with <menu> and increased with 
<adjust>.  Pressing <select> starts the new sequence.

"Save" saves the current screen and parameters.

"Load" loads a previously saved screen with its 
parameters, allowing the sequence to continue where it 
left off, or any other Mode 15 screen in the "Screens" 
directory, which can then be "played" with "autoplay" on 
the MUSIC menu.

One screen is already saved on disc, as MBROT1, which 
gives the full set at maximum resolution as the starting 
point for Julia sets or Zoom. 


MUSIC

"Sound" toggles the music on or off from the MAIN MENU.

"Music" accesses the parameters and options in the MUSIC 
menu.  The various Sub-menus are shown as required.

"Keyboard" allows the seventeen tones in the current scale 
to be played, in accordance with the current parameters, 
using keys <A-L> and <W-O>.  Holding down <Space> gives a 
random sequence of notes.  Pressing <Return> leaves the 
keyboard mode.

"Autoplay" stops the visual sequence and "plays" the 
current screen pixel by pixel.  Any Mode 15 screen can be 
used, so a "composition" could be "painted" in another 
program.  Results are not very predictable, however!

In the "Scale" sub-menu it is possible to enter a 
user-defined sequence of notes.  The sixteen intervals 
should be entered as numbers of semitones between notes up 
the scale.  For example a major scale would be entered as: 
2,2,1,2,2,2,1,2,2,1,2,2,2,1,2,2.

In the "Instrument" sub-menu you can enter the voice 
number of a solo instrument or up to eight separate 
instruments in an "orchestra".  The voice number refers to 
the 9 already installed in the computer, or to any extra 
ones installed as relocateable modules.  12 extra voices 
are on disc and are automatically installed on running the 
program.
00000000  21 43 6f 6d 70 6f 73 65  20 20 56 65 72 73 69 6f  |!Compose  Versio|
00000010  6e 20 32 2e 31 20 62 79  20 4d 69 6b 65 20 53 6d  |n 2.1 by Mike Sm|
00000020  69 74 68 20 28 63 29 20  41 55 20 41 70 72 69 6c  |ith (c) AU April|
00000030  20 31 39 39 34 0a 0a 21  43 6f 6d 70 6f 73 65 20  | 1994..!Compose |
00000040  69 73 20 61 6e 20 61 75  74 6f 6d 61 74 69 63 20  |is an automatic |
00000050  63 6f 6d 70 6f 73 69 74  69 6f 6e 20 70 72 6f 67  |composition prog|
00000060  72 61 6d 20 74 68 61 74  20 72 65 6c 61 74 65 73  |ram that relates|
00000070  20 0a 6d 75 73 69 63 61  6c 20 73 6f 75 6e 64 73  | .musical sounds|
00000080  20 74 6f 20 76 69 73 75  61 6c 20 70 61 74 74 65  | to visual patte|
00000090  72 6e 73 20 6f 6e 20 74  68 65 20 73 63 72 65 65  |rns on the scree|
000000a0  6e 2e 0a 0a 54 68 65 20  70 72 6f 67 72 61 6d 20  |n...The program |
000000b0  69 73 20 74 6f 74 61 6c  6c 79 20 6d 65 6e 75 20  |is totally menu |
000000c0  63 6f 6e 74 72 6f 6c 6c  65 64 2c 20 75 73 69 6e  |controlled, usin|
000000d0  67 20 74 68 65 20 6d 6f  75 73 65 20 74 6f 20 0a  |g the mouse to .|
000000e0  73 65 6c 65 63 74 20 6f  70 74 69 6f 6e 73 20 61  |select options a|
000000f0  6e 64 20 63 68 61 6e 67  65 20 70 61 72 61 6d 65  |nd change parame|
00000100  74 65 72 73 2e 20 20 41  6c 74 68 6f 75 67 68 20  |ters.  Although |
00000110  6e 6f 74 20 6d 75 6c 74  69 2d 20 0a 74 61 73 6b  |not multi- .task|
00000120  69 6e 67 2c 20 69 74 20  69 73 20 69 6e 69 74 69  |ing, it is initi|
00000130  61 74 65 64 20 62 79 20  64 6f 75 62 6c 65 2d 63  |ated by double-c|
00000140  6c 69 63 6b 69 6e 67 20  6f 6e 20 69 74 73 20 0a  |licking on its .|
00000150  66 69 6c 65 2d 69 63 6f  6e 20 61 6e 64 20 77 69  |file-icon and wi|
00000160  6c 6c 20 72 65 74 75 72  6e 20 74 6f 20 74 68 65  |ll return to the|
00000170  20 44 65 73 6b 54 6f 70  20 62 79 20 73 65 6c 65  | DeskTop by sele|
00000180  63 74 69 6e 67 20 0a 22  51 75 69 74 22 20 66 72  |cting ."Quit" fr|
00000190  6f 6d 20 74 68 65 20 4d  41 49 4e 20 4d 45 4e 55  |om the MAIN MENU|
000001a0  2e 0a 0a 4d 65 6e 75 73  20 61 72 65 20 61 72 72  |...Menus are arr|
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00000250  72 6e 73 20 74 6f 20 74  68 65 20 6e 65 78 74 20  |rns to the next |
00000260  68 69 67 68 65 72 20 6d  65 6e 75 2e 20 20 54 68  |higher menu.  Th|
00000270  75 73 20 74 68 65 20 4d  41 49 4e 20 4d 45 4e 55  |us the MAIN MENU|
00000280  20 63 61 6e 20 0a 61 6c  77 61 79 73 20 62 65 20  | can .always be |
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00000330  65 63 74 3e 20 6f 6e 20  22 2b 22 20 6f 72 20 22  |ect> on "+" or "|
00000340  2d 22 2e 0a 0a 50 72 65  73 73 69 6e 67 20 74 68  |-"...Pressing th|
00000350  65 20 72 69 67 68 74 20  62 75 74 74 6f 6e 2c 20  |e right button, |
00000360  3c 61 64 6a 75 73 74 3e  2c 20 77 69 6c 6c 20 70  |<adjust>, will p|
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00000380  0a 74 68 65 20 76 69 73  75 61 6c 20 64 69 73 70  |.the visual disp|
00000390  6c 61 79 20 61 6e 64 20  6d 75 73 69 63 2c 20 62  |lay and music, b|
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000003d0  6e 73 20 6f 72 20 70 61  72 61 6d 65 74 65 72 73  |ns or parameters|
000003e0  20 63 68 61 6e 67 65 64  20 61 74 20 61 6e 79 20  | changed at any |
000003f0  74 69 6d 65 2e 0a 0a 54  68 65 20 6d 65 6e 75 73  |time...The menus|
00000400  20 61 72 65 20 72 65 61  73 6f 6e 61 62 6c 79 20  | are reasonably |
00000410  73 65 6c 66 2d 65 78 70  6c 61 6e 61 74 6f 72 79  |self-explanatory|
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00000480  6f 6d 70 6f 73 65 20 69  73 20 62 61 73 69 63 61  |ompose is basica|
00000490  6c 6c 79 20 61 20 0a 70  72 6f 67 72 61 6d 20 74  |lly a .program t|
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000004b0  73 63 6f 76 65 72 20 66  61 73 63 69 6e 61 74 69  |scover fascinati|
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000004e0  20 70 61 74 74 65 72 6e  73 20 61 73 20 79 6f 75  | patterns as you|
000004f0  20 67 6f 2e 0a 0a 0a 50  41 54 54 45 52 4e 53 0a  | go....PATTERNS.|
00000500  0a 54 68 65 72 65 20 61  72 65 20 66 6f 75 72 20  |.There are four |
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00000540  65 6c 62 72 6f 74 22 2c  20 74 68 65 20 66 61 6d  |elbrot", the fam|
00000550  69 6c 69 61 72 20 66 72  61 63 74 61 6c 2c 20 75  |iliar fractal, u|
00000560  73 69 6e 67 20 61 20 66  75 6c 6c 20 32 35 36 20  |sing a full 256 |
00000570  0a 63 6f 6c 6f 75 72 20  74 69 6c 69 6e 67 20 61  |.colour tiling a|
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000006d0  20 0a 70 61 72 61 6d 65  74 65 72 73 2e 0a 0a 22  | .parameters..."|
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000007b0  20 6e 65 77 20 73 65 71  75 65 6e 63 65 2e 0a 0a  | new sequence...|
000007c0  22 53 61 76 65 22 20 73  61 76 65 73 20 74 68 65  |"Save" saves the|
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000007e0  61 6e 64 20 70 61 72 61  6d 65 74 65 72 73 2e 0a  |and parameters..|
000007f0  0a 22 4c 6f 61 64 22 20  6c 6f 61 64 73 20 61 20  |."Load" loads a |
00000800  70 72 65 76 69 6f 75 73  6c 79 20 73 61 76 65 64  |previously saved|
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00000820  20 0a 70 61 72 61 6d 65  74 65 72 73 2c 20 61 6c  | .parameters, al|
00000830  6c 6f 77 69 6e 67 20 74  68 65 20 73 65 71 75 65  |lowing the seque|
00000840  6e 63 65 20 74 6f 20 63  6f 6e 74 69 6e 75 65 20  |nce to continue |
00000850  77 68 65 72 65 20 69 74  20 0a 6c 65 66 74 20 6f  |where it .left o|
00000860  66 66 2c 20 6f 72 20 61  6e 79 20 6f 74 68 65 72  |ff, or any other|
00000870  20 4d 6f 64 65 20 31 35  20 73 63 72 65 65 6e 20  | Mode 15 screen |
00000880  69 6e 20 74 68 65 20 22  53 63 72 65 65 6e 73 22  |in the "Screens"|
00000890  20 0a 64 69 72 65 63 74  6f 72 79 2c 20 77 68 69  | .directory, whi|
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000008b0  70 6c 61 79 65 64 22 20  77 69 74 68 20 22 61 75  |played" with "au|
000008c0  74 6f 70 6c 61 79 22 20  6f 6e 20 0a 74 68 65 20  |toplay" on .the |
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000008e0  20 73 63 72 65 65 6e 20  69 73 20 61 6c 72 65 61  | screen is alrea|
000008f0  64 79 20 73 61 76 65 64  20 6f 6e 20 64 69 73 63  |dy saved on disc|
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00000910  63 68 20 0a 67 69 76 65  73 20 74 68 65 20 66 75  |ch .gives the fu|
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00000930  6d 20 72 65 73 6f 6c 75  74 69 6f 6e 20 61 73 20  |m resolution as |
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000009a0  68 65 20 4d 41 49 4e 20  4d 45 4e 55 2e 0a 0a 22  |he MAIN MENU..."|
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000009c0  74 68 65 20 70 61 72 61  6d 65 74 65 72 73 20 61  |the parameters a|
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00000a20  65 79 62 6f 61 72 64 22  20 61 6c 6c 6f 77 73 20  |eyboard" allows |
00000a30  74 68 65 20 73 65 76 65  6e 74 65 65 6e 20 74 6f  |the seventeen to|
00000a40  6e 65 73 20 69 6e 20 74  68 65 20 63 75 72 72 65  |nes in the curre|
00000a50  6e 74 20 73 63 61 6c 65  20 0a 74 6f 20 62 65 20  |nt scale .to be |
00000a60  70 6c 61 79 65 64 2c 20  69 6e 20 61 63 63 6f 72  |played, in accor|
00000a70  64 61 6e 63 65 20 77 69  74 68 20 74 68 65 20 63  |dance with the c|
00000a80  75 72 72 65 6e 74 20 70  61 72 61 6d 65 74 65 72  |urrent parameter|
00000a90  73 2c 20 0a 75 73 69 6e  67 20 6b 65 79 73 20 3c  |s, .using keys <|
00000aa0  41 2d 4c 3e 20 61 6e 64  20 3c 57 2d 4f 3e 2e 20  |A-L> and <W-O>. |
00000ab0  20 48 6f 6c 64 69 6e 67  20 64 6f 77 6e 20 3c 53  | Holding down <S|
00000ac0  70 61 63 65 3e 20 67 69  76 65 73 20 61 20 0a 72  |pace> gives a .r|
00000ad0  61 6e 64 6f 6d 20 73 65  71 75 65 6e 63 65 20 6f  |andom sequence o|
00000ae0  66 20 6e 6f 74 65 73 2e  20 20 50 72 65 73 73 69  |f notes.  Pressi|
00000af0  6e 67 20 3c 52 65 74 75  72 6e 3e 20 6c 65 61 76  |ng <Return> leav|
00000b00  65 73 20 74 68 65 20 0a  6b 65 79 62 6f 61 72 64  |es the .keyboard|
00000b10  20 6d 6f 64 65 2e 0a 0a  22 41 75 74 6f 70 6c 61  | mode..."Autopla|
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00000b30  75 61 6c 20 73 65 71 75  65 6e 63 65 20 61 6e 64  |ual sequence and|
00000b40  20 22 70 6c 61 79 73 22  20 74 68 65 20 0a 63 75  | "plays" the .cu|
00000b50  72 72 65 6e 74 20 73 63  72 65 65 6e 20 70 69 78  |rrent screen pix|
00000b60  65 6c 20 62 79 20 70 69  78 65 6c 2e 20 20 41 6e  |el by pixel.  An|
00000b70  79 20 4d 6f 64 65 20 31  35 20 73 63 72 65 65 6e  |y Mode 15 screen|
00000b80  20 63 61 6e 20 62 65 20  0a 75 73 65 64 2c 20 73  | can be .used, s|
00000b90  6f 20 61 20 22 63 6f 6d  70 6f 73 69 74 69 6f 6e  |o a "composition|
00000ba0  22 20 63 6f 75 6c 64 20  62 65 20 22 70 61 69 6e  |" could be "pain|
00000bb0  74 65 64 22 20 69 6e 20  61 6e 6f 74 68 65 72 20  |ted" in another |
00000bc0  0a 70 72 6f 67 72 61 6d  2e 20 20 52 65 73 75 6c  |.program.  Resul|
00000bd0  74 73 20 61 72 65 20 6e  6f 74 20 76 65 72 79 20  |ts are not very |
00000be0  70 72 65 64 69 63 74 61  62 6c 65 2c 20 68 6f 77  |predictable, how|
00000bf0  65 76 65 72 21 0a 0a 49  6e 20 74 68 65 20 22 53  |ever!..In the "S|
00000c00  63 61 6c 65 22 20 73 75  62 2d 6d 65 6e 75 20 69  |cale" sub-menu i|
00000c10  74 20 69 73 20 70 6f 73  73 69 62 6c 65 20 74 6f  |t is possible to|
00000c20  20 65 6e 74 65 72 20 61  20 0a 75 73 65 72 2d 64  | enter a .user-d|
00000c30  65 66 69 6e 65 64 20 73  65 71 75 65 6e 63 65 20  |efined sequence |
00000c40  6f 66 20 6e 6f 74 65 73  2e 20 20 54 68 65 20 73  |of notes.  The s|
00000c50  69 78 74 65 65 6e 20 69  6e 74 65 72 76 61 6c 73  |ixteen intervals|
00000c60  20 0a 73 68 6f 75 6c 64  20 62 65 20 65 6e 74 65  | .should be ente|
00000c70  72 65 64 20 61 73 20 6e  75 6d 62 65 72 73 20 6f  |red as numbers o|
00000c80  66 20 73 65 6d 69 74 6f  6e 65 73 20 62 65 74 77  |f semitones betw|
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00000ce0  32 2c 32 2c 32 2c 31 2c  32 2c 32 2c 31 2c 32 2c  |2,2,2,1,2,2,1,2,|
00000cf0  32 2c 32 2c 31 2c 32 2c  32 2e 0a 0a 49 6e 20 74  |2,2,1,2,2...In t|
00000d00  68 65 20 22 49 6e 73 74  72 75 6d 65 6e 74 22 20  |he "Instrument" |
00000d10  73 75 62 2d 6d 65 6e 75  20 79 6f 75 20 63 61 6e  |sub-menu you can|
00000d20  20 65 6e 74 65 72 20 74  68 65 20 76 6f 69 63 65  | enter the voice|
00000d30  20 0a 6e 75 6d 62 65 72  20 6f 66 20 61 20 73 6f  | .number of a so|
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00000d70  74 73 20 69 6e 20 61 6e  20 22 6f 72 63 68 65 73  |ts in an "orches|
00000d80  74 72 61 22 2e 20 20 54  68 65 20 76 6f 69 63 65  |tra".  The voice|
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00000da0  6f 20 0a 74 68 65 20 39  20 61 6c 72 65 61 64 79  |o .the 9 already|
00000db0  20 69 6e 73 74 61 6c 6c  65 64 20 69 6e 20 74 68  | installed in th|
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00000dd0  6f 20 61 6e 79 20 65 78  74 72 61 20 0a 6f 6e 65  |o any extra .one|
00000de0  73 20 69 6e 73 74 61 6c  6c 65 64 20 61 73 20 72  |s installed as r|
00000df0  65 6c 6f 63 61 74 65 61  62 6c 65 20 6d 6f 64 75  |elocateable modu|
00000e00  6c 65 73 2e 20 20 31 32  20 65 78 74 72 61 20 76  |les.  12 extra v|
00000e10  6f 69 63 65 73 20 0a 61  72 65 20 6f 6e 20 64 69  |oices .are on di|
00000e20  73 63 20 61 6e 64 20 61  72 65 20 61 75 74 6f 6d  |sc and are autom|
00000e30  61 74 69 63 61 6c 6c 79  20 69 6e 73 74 61 6c 6c  |atically install|
00000e40  65 64 20 6f 6e 20 72 75  6e 6e 69 6e 67 20 74 68  |ed on running th|
00000e50  65 20 0a 70 72 6f 67 72  61 6d 2e 0a              |e .program..|
00000e5c