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GeoGebra Manual
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PlaySound( <URL> )
Plays an MP3 (.mp3) file
예:
  • PlaySound("http://static.geogebra.org/welcome_to_geogebra.mp3")
  • PlaySound("#J2sQQfwQ") plays an .mp3 that has been uploaded to GeoGebra
  • PlaySound("https://drive.google.com/uc?id=0B7xCmZaU3oU2eXFNUzd6ZlZJS0U&authuser=0&export=download") plays an .mp3 from Google Drive
  • PlaySound("https://www.dropbox.com/s/27skpv82odjp7ej/material-1264825.mp3?dl=1") plays an .mp3 from DropBox
노트: To work on iOS (and also if you want immediate playback) then you can encode the .mp3 as an inline base64-encoded data: URL, see https://www.geogebra.org/m/wztkqxuv for an example. It must start with the exact string data:audio/mp3;base64, to work in GeoGebra Classic 5. You can use this utility to convert .MP3s into the syntax needed in GeoGebra https://test.geogebra.org/~mike/utils/base64Encode.html 


PlaySound( <Boolean Play> )
Pause or resume play (not MP3 files)
PlaySound(true) = play, PlaySound(false) = pause.
PlaySound( <Function>, <Min Value>, <Max Value> )
Plays a sound generated by Function, a time-valued function with range [-1,1]. The time units are seconds and the sound is played from time Min Value to Max Value. Sound is generated by 8-bit samples taken at a rate of 8000 samples per second.
예: PlaySound(sin(440 2Pi x), 0, 1)
This plays a pure sine wave tone at 440 Hz (musical note A) for one second.
PlaySound( <Function>, <Min Value>, <Max Value>, <Sample Rate>, <Sample Depth> )
Plays a sound generated by Function, a time-valued function with range [-1,1]. The time units are seconds and the sound is played from time Min Value to Max Value. The sampling method is specified by "Sample Depth" and "Sample Rate".
"Sample Rate" is the number of sample function values taken each second. Allowable values are 8000, 11025, 16000, 22050, or 44100
"Sample Depth" is the data size of a sample in bits. Allowable values are 8 and 16.
PlaySound( <Note>, <Duration>, <Instrument> ) (GeoGebra Classic 5 only)
Plays a MIDI note.
Note is an integer from 0 to 127 that represents a musical note given by the table below. When note = 60 a Middle C is played.
Duration is the time to play the note in seconds.
Instrument is an integer that represents the synthesized instrument used to play the note. See technical specifications for possible instruments.
Most instruments are supported, but there are differences between computer platforms.
MIDI Notes
Octave C C# D D# E F F# G G# A A# B
0 0 1 2 3 4 5 6 7 8 9 10 11
1 12 13 14 15 16 17 18 19 20 21 22 23
2 24 25 26 27 28 29 30 31 32 33 34 35
3 36 37 38 39 40 41 42 43 44 45 46 47
4 48 49 50 51 52 53 54 55 56 57 58 59
5 60 61 62 63 64 65 66 67 68 69 70 71
6 72 73 74 75 76 77 78 79 80 81 82 83
7 84 85 86 87 88 89 90 91 92 93 94 95
8 96 97 98 99 100 101 102 103 104 105 106 107
9 108 109 110 111 112 113 114 115 116 117 118 119
10 120 121 122 123 124 125 126 127


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