HI there guys any one know how to create the correct tone for the sound using c++? i manage to know the basic only
c 262
d294
e 330
f 349
f 392
a 440
b 494
c2 524
This is from a handphone ringing tone
how do i know the frequency for like 8-8a2,c4,c5 8#a2,8-
anyone have any idea?
sound(262);
I dusted off this little code snippet from the good old DOS days. It will answer some of your questions on how to calculate the musical scales. If you need any more details, get friendly with a musician!
/*********************** play.c ***********************
**
** Experimentation with sound:
** play(int octave,int note,int duration)
** Written in Turbo C V.2.0 by vegaseat 6/15/88
**
*********************************************************/
/************** note.h ***********/
#define P 0 /* pause */
#define C 1
#define CS 2 /* C sharp */
#define D 3
#define DS 4
#define E 5
#define F 6
#define FS 7
#define G 8
#define GS 9
#define A 10
#define AS 11
#define B 12
#define EN 75 /* eighth note */
#define QN 150 /* quarter note */
#define HN 300 /* half note */
#define FN 600 /* full note */
/************************************/
void play(int octave,int note,int duration);
void british(void); /* Westminster Bells */
void main(void) /* test play() */
{
british();
getch();
}
void play(int octave,int note,int duration)
/* play note (C=1 to B=12), in octave (1-8), and duration (msec)
include NOTE.H for note values */
{
int k;
double frequency;
if (note == 0) { /* pause */
delay(duration);
return;
}
frequency = 32.625;
for (k = 0; k < octave; k++) /* compute C in octave */
frequency *= 2;
for (k = 0; k < note; k++) /* frequency of note */
frequency *= 1.059463094; /* twelve root of 2 */
delay(5); /* delay between keys */
sound((int) frequency); /* sound the note */
delay(duration); /* for correct duration */
nosound();
}
void british(void) /* Westminster Bells, sort of */
{
play(4,E,HN);
play(4,C,HN);
play(4,D,HN);
play(3,G,HN+QN); play(3,P,QN);
play(3,G,HN);
play(4,D,HN);
play(4,E,HN);
play(4,C,HN+QN);
}
/*
For XP/NT that don't allow port outputs there is a WIN32 API call:
The Beep function generates simple tones on the speaker. The function
is synchronous; it does not return control to its caller until the
sound finishes.
BOOL Beep(
DWORD dwFreq, // sound frequency, in hertz
DWORD dwDuration // sound duration, in milliseconds
);
*/erm sorry but i still not very sure how u calculate the value this the the program i type just that i'm short of music that all.By the way thank u very for ur effort to reply my message.
It is not that difficult and even though I am a musician you don't really need to be one just to determine the frequency of each musical note.
First, c,d,e,f,g,a,b are not all the musical notes that exist in the eastern music system, in fact there are twelve different notes (see those black keys in a piano keyboard?) and they are:
a, a#, b, c, c#, d, d#, e, f, f#, g, g#
Second, the american standard pitch states that the note A has a frequency of 440, and this is the point of reference to determine every other note.
The third part is just mathematics, and it is a simple formula: The frequency of the subsequent note equals the current note multiplied by the 12th root of 2 (the 12th root of 2 can also be expresed as 2 elevated at 1/12, or 2^(1/12)). So with this formula let's make an example: suppose you already have the note A which is 440 and you want to determine the next note which is A#, the mathematical notation is:
A# = A * (2^(1/12))
which is 440 * (2^(1/12)) and equals 466.1637...
following this sequence:
B = A# * (2^(1/12))
C = B * (2^(1/12))
C# = C * (2^(1/12))
and so on.....
You'll get a lot of decimal numbers in all of the notes (except of all A's) and the good news is that you can round to the nearest integer as this difference is imperceptible to the human ear.
Now, what happens to all the notes below A 440???? It is very easy, you just need to use the same formula, except that instead of multiplying you need to divide, for example, to get the note before A:
G# = A / (2^(1/12))
Now you can get any range of notes you want in any scale. Note that this approach requires you to obtain all the notes in a sequential mode. If you want to get a note directly from A 440 you tweak the formula a little bit. Let's say you want to obtain the next F after A 440, F would be the 8th note after A, so you multiply by the 12th root of 2 elevated at the number of steps after the current note, in this case eight. So:
F = A * (2^(1/12))^8
I hope this helps, and sorry if my english is not that good since I'm from Mexico.
Sounds like you got lost with the calculations of the notes of the musical scale I gave you in my sample code. Well here is a table of notes and associated frequencies:
Frequency Note MIDI#
8.1758 0
8.6620 1
9.1770 2
9.7227 3
10.3009 4
10.9134 5
11.5623 6
12.2499 7
12.9783 8
13.7500 9
14.5676 10
15.4339 11
16.3516 12
17.3239 13
18.3540 14
19.4454 15
20.6017 16
21.8268 17
23.1247 18
24.4997 19
25.9565 20
27.5000 A0 21
29.1352 A#0 22
30.8677 B0 23
32.7032 C1 24
34.6478 C#1 25
36.7081 D1 26
38.8909 D#1 27
41.2034 E1 28
43.6535 F1 29
46.2493 F#1 30
48.9994 G1 31
51.9131 G#1 32
55.0000 A1 33
58.2705 A#1 34
61.7354 B1 35
65.4064 C2 36
69.2957 C#2 37
73.4162 D2 38
77.7817 D#2 39
82.4069 E2 40
87.3071 F2 41
92.4986 F#2 42
97.9989 G2 43
103.8262 G#2 44
110.0000 A2 45
116.5409 A#2 46
123.4708 B2 47
130.8128 C3 48
138.5913 C#3 49
146.8324 D3 50
155.5635 D#3 51
164.8138 E3 52
174.6141 F3 53
184.9972 F#3 54
195.9977 G3 55
207.6523 G#3 56
220.0000 A3 57
233.0819 A#3 58
246.9417 B3 59
261.6256 C4 60
277.1826 C#4 61
293.6648 D4 62
311.1270 D#4 63
329.6276 E4 64
349.2282 F4 65
369.9944 F#4 66
391.9954 G4 67
415.3047 G#4 68
440.0000 A4 69
466.1638 A#4 70
493.8833 B4 71
523.2511 C5 72
554.3653 C#5 73
587.3295 D5 74
622.2540 D#5 75
659.2551 E5 76
698.4565 F5 77
739.9888 F#5 78
783.9909 G5 79
830.6094 G#5 80
880.0000 A5 81
932.3275 A#5 82
987.7666 B5 83
1046.5023 C6 84
1108.7305 C#6 85
1174.6591 D6 86
1244.5079 D#6 87
1318.5102 E6 88
1396.9129 F6 89
1479.9777 F#6 90
1567.9817 G6 91
1661.2188 G#6 92
1760.0000 A6 93
1864.6550 A#6 94
1975.5332 B6 95
2093.0045 C7 96
2217.4610 C#7 97
2349.3181 D7 98
2489.0159 D#7 99
2637.0205 E7 100
2793.8259 F7 101
2959.9554 F#7 102
3135.9635 G7 103
3322.4376 G#7 104
3520.0000 A7 105
3729.3101 A#7 106
3951.0664 B7 107
4186.0090 C8 108
4434.9221 109
4698.6363 110
4978.0317 111
5274.0409 112
5587.6517 113
5919.9108 114
6271.9270 115
6644.8752 116
7040.0000 117
7458.6202 118
7902.1328 119
8372.0181 120
8869.8442 121
9397.2726 122
9956.0635 123
10548.0818 124
11175.3034 125
11839.8215 126
12543.8540 127
Trying to get fancy, hope it worked.
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