These frequencies were measured using the CCP module of the same chip running the SOUND commands.
Using "Capture" mode, an average of 16 cycles are taken using Timer1 with no prescaler as the time base, OSC = 20Mhz.
Not very many of them line up with musical "Notes".
And yet I've heard some pretty interesting songs played with the SOUND command.
Code:
Note Freq
---- ----
001 = 78.2
002 = 79.0
003 = 79.5
004 = 80.2
005 = 80.8
006 = 81.5
007 = 82.2
008 = 82.8
009 = 83.5
010 = 84.2
011 = 85.0
012 = 85.8
013 = 86.5
014 = 87.2
015 = 88.0
016 = 88.8
017 = 89.5
018 = 90.5
019 = 91.2
020 = 92.0
021 = 93.0
022 = 93.8
023 = 94.7
024 = 95.8
025 = 96.5
026 = 97.5
027 = 98.5
028 = 99.5
029 = 100.5
030 = 101.5
031 = 102.5
032 = 103.5
033 = 104.7
034 = 105.8
035 = 107.0
036 = 108.2
037 = 109.3
038 = 110.5
039 = 111.7
040 = 113.0
041 = 114.3
042 = 115.7
043 = 117.0
044 = 118.5
045 = 119.8
046 = 121.2
047 = 122.8
048 = 124.2
049 = 126.0
050 = 127.5
051 = 129.3
052 = 131.0
053 = 132.7
054 = 134.5
055 = 136.3
056 = 138.2
057 = 140.3
058 = 142.2
059 = 144.3
060 = 146.2
061 = 148.5
062 = 150.8
063 = 153.0
064 = 155.5
065 = 158.0
066 = 160.5
067 = 163.2
068 = 165.8
069 = 168.7
070 = 171.5
071 = 174.5 F3
072 = 177.8
073 = 181.0
074 = 184.2
075 = 187.8
076 = 191.5
077 = 195.2
078 = 199.0
079 = 203.3
080 = 207.2
081 = 211.8
082 = 216.5
083 = 221.2
084 = 226.3
085 = 231.5
086 = 237.0
087 = 242.7
088 = 248.8
089 = 255.2
090 = 262.0
091 = 269.0
092 = 276.5
093 = 284.5
094 = 292.8
095 = 301.8
096 = 311.0
097 = 321.3
098 = 331.7
099 = 343.3
100 = 355.5
101 = 368.7
102 = 383.0
103 = 398.3
104 = 414.7
105 = 433.0
106 = 452.5
107 = 474.3
108 = 497.7
109 = 524.0
110 = 553.3
111 = 585.7
112 = 622.3
113 = 663.9
114 = 711.4
115 = 766.3
116 = 830.0
117 = 905.5
118 = 995.8
119 = 1106.5
120 = 1245.1
121 = 1423.2
122 = 1660.3
123 = 1991.9
124 = 2490.2
125 = 3320.5
126 = 4980.6
127 = 9961.5
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