PlaySound[ , , ]: Plays a MIDI note. Note is an integer from 0 to 127 that represents a musical note given by the table below.
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PlaySound指令
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PlaySound指令
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PlaySound[,,]
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PlaySound[,]
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PlaySound[]
目前本頁中文說明尚未翻譯完成，請先連至英文說明。
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PlaySound[,,]
目前本頁中文說明尚未翻譯完成，請先連至英文說明。
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PlaySound[,,,,
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PlaySound[]]
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PlaySound[,,]
PlaysaMIDInote.
Noteisanintegerfrom0to127thatrepresentsamusicalnotegivenbythetablebelow.Whennote=60aMiddleCisplayed.
Durationisthetimetoplaythenoteinseconds.
Instrumentisanintegerthatrepresentsthesynthesizedinstrumentusedtoplaythenote.Seetechnicalspecificationsatmidi.orgforpossibleinstruments.
Mostinstrumentsaresupported,buttherearedifferencesbetweencomputerplatforms.
MIDINotes
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
51
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
PlaySound[,]
PlaysasequenceofMIDInotesandcommandsusingaJFuguemusicstring.
NoteSequenceisatextstringthatusesJFuguecharactercommands.
InstrumentisthedefaultMIDIinstrumentusedwhenthestringisplayed.
Thebasiccommandsaregivenbelow.Thefullcommandsetisdescribedin
TheCompleteGuidetoJFugue(English).
BasicJFugueCommands
Character
Command
A-G
Playthemusicalnotegivenbytheletterinoctave5
Forsharpsandflatsaddbor#
Tochangeoctavesaddtheoctavenumber,e.g.A4
Notelengthisaquarternoteunlessspecifiedotherwise
[number]
PlaytheMIDInotegivenbythenumber(0-127)
+
Joinnotestogethertoplaytheminharmony,e.g.C+E+G
R
Rest
w,h,q,i,s
Addtotheendofanoteorrest;setsthelength
w=wholenote
h=halfnote
q=quarternote
i=eighthnote
s=sixteenthnote
/n
Addtoanoteorrest;setsthelengthton(adecimalnumber)
/1=wholenote
/.5=halfnote
/.25=quarternote
/2=twomeasures
I[number]
Settheinstrument
V
Vfollowedbyanumberfrom0to15setstheMIDIchannel."V9"setstheMIDIpercussionchannel.
Space
Playthepreviousnote,combinationofnotesorrest.
範例：PlaySound["C+E+GRwAiBiCiA4iB4iC4i",0]
PlaysaquarternotechordCEG;restsforawholenote;playstheeighthnotesA,B,C;playsthemagainoneoctavelower.
Pianoinstrumentisused.
範例：PlaySound["I[56]C5qD5qI[71]G5qF5q",0]
Playsnoteswithdifferentinstruments.Trumpet=56andClarinet=71.
範例：PlaySound["V0A3qB3qC3qB3qV1A2hC2h",0]
Playsnotesinharmonywithdifferentvoices.
PlaySound[]
PlaysaMIDIfile(*.mid)oratextfile(*.txt)containingaJFuguestring.
"File"isthedirectorypathtothisfile,e.g.PlaySound["path/to/myFile.mid"]
PlaySound[,,]
PlaysasoundgeneratedbyFunction,atime-valuedfunctionwithrange[-1,1].ThetimeunitsaresecondsandthesoundisplayedfromtimeMinValuetoMaxValue.Soundisgeneratedby8-bitsamplestakenatarateof8000samplespersecond.
範例：PlaySound[sin(4402Pix),0,1]
Thisplaysapuresinewavetoneat440Hz(musicalnoteA)foronesecond.
PlaySound[,,,,]
PlaysasoundgeneratedbyFunction,atime-valuedfunctionwithrange[-1,1].ThetimeunitsaresecondsandthesoundisplayedfromtimeMinValuetoMaxValue.Thesamplingmethodisspecifiedby"SampleDepth"and"SampleRate".
"SampleRate"isthenumberofsamplefunctionvaluestakeneachsecond.Allowablevaluesare8000,11025,16000,22050,or44100
"SampleDepth"isthedatasizeofasampleinbits.Allowablevaluesare8and16.
PlaySound[]
Pauseorresumeplay.
PlaySound[true]=play,PlaySound[false]=pause.
取自「http://wiki.geogebra.org/s/zh/index.php?title=PlaySound_指令&oldid=4405」
分類：4.0版官方手冊指令AwaitingTranslation
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