PlaySound Command
- PlaySound( <URL> )
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Plays an MP3 (.mp3) file
-
PlaySound("https://test.geogebra.org/~mike/welcome-to-geogebra-markus.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
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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
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- PlaySound( <Boolean Play> )
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Pause or resume play (not MP3 files)
PlaySound(true)= play,PlaySound(false)= pause. - PlaySound( <Function>, <Min Value>, <Max Value> )
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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.
This plays a pure sine wave tone at 440 Hz (musical note A) for one second.
PlaySound(sin(440 2Pi x), 0, 1)
- PlaySound( <Function>, <Min Value>, <Max Value>, <Sample Rate>, <Sample Depth> )
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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)
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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