120 lines
6.2 KiB
Markdown
120 lines
6.2 KiB
Markdown
# Apple 2 Mockingboard Test
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Play a single note on both the left and right channels A.
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Source: 6502 Assembly
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# Mockingboard Tone <-> Frequency Table
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See `freq.c`
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```
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Note Frequency Tone Decimal reproduced Relative Error
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A0 27.500 Hz -> $090F ( 9 15) ~ 27.503 Hz (+0.012%)
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A0# 29.135 Hz -> $088D ( 8 141) ~ 29.137 Hz (+0.005%)
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B0 30.868 Hz -> $0812 ( 8 18) ~ 30.871 Hz (+0.012%)
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C1 32.703 Hz -> $079E ( 7 158) ~ 32.708 Hz (+0.014%)
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C1# 34.648 Hz -> $0731 ( 7 49) ~ 34.644 Hz (-0.010%)
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D1 36.708 Hz -> $06C9 ( 6 201) ~ 36.719 Hz (+0.029%)
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D1# 38.891 Hz -> $0668 ( 6 104) ~ 38.890 Hz (-0.001%)
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E1 41.203 Hz -> $060C ( 6 12) ~ 41.202 Hz (-0.004%)
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F1 43.654 Hz -> $05B5 ( 5 181) ~ 43.655 Hz (+0.004%)
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F1# 46.249 Hz -> $0563 ( 5 99) ~ 46.251 Hz (+0.004%)
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G1 48.999 Hz -> $0516 ( 5 22) ~ 48.986 Hz (-0.027%)
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G1# 51.913 Hz -> $04CD ( 4 205) ~ 51.896 Hz (-0.033%)
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A1 55.000 Hz -> $0488 ( 4 136) ~ 54.983 Hz (-0.031%)
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A1# 58.270 Hz -> $0447 ( 4 71) ~ 58.247 Hz (-0.041%)
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B1 61.735 Hz -> $0409 ( 4 9) ~ 61.743 Hz (+0.012%)
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C2 65.406 Hz -> $03CF ( 3 207) ~ 65.416 Hz (+0.014%)
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C2# 69.296 Hz -> $0398 ( 3 152) ~ 69.326 Hz (+0.044%)
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D2 73.416 Hz -> $0365 ( 3 101) ~ 73.395 Hz (-0.029%)
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D2# 77.782 Hz -> $0334 ( 3 52) ~ 77.781 Hz (-0.001%)
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E2 82.407 Hz -> $0306 ( 3 6) ~ 82.403 Hz (-0.004%)
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F2 87.307 Hz -> $02DB ( 2 219) ~ 87.251 Hz (-0.065%)
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F2# 92.499 Hz -> $02B2 ( 2 178) ~ 92.435 Hz (-0.069%)
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G2 97.999 Hz -> $028B ( 2 139) ~ 97.973 Hz (-0.027%)
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G2# 103.826 Hz -> $0266 ( 2 102) ~ 103.877 Hz (+0.049%)
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A2 110.000 Hz -> $0244 ( 2 68) ~ 109.966 Hz (-0.031%)
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A2# 116.541 Hz -> $0223 ( 2 35) ~ 116.600 Hz (+0.051%)
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B2 123.471 Hz -> $0205 ( 2 5) ~ 123.366 Hz (-0.085%)
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C3 130.813 Hz -> $01E8 ( 1 232) ~ 130.697 Hz (-0.088%)
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C3# 138.591 Hz -> $01CC ( 1 204) ~ 138.653 Hz (+0.044%)
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D3 146.832 Hz -> $01B2 ( 1 178) ~ 146.959 Hz (+0.086%)
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D3# 155.563 Hz -> $019A ( 1 154) ~ 155.562 Hz (-0.001%)
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E3 164.814 Hz -> $0183 ( 1 131) ~ 164.807 Hz (-0.004%)
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F3 174.614 Hz -> $016D ( 1 109) ~ 174.740 Hz (+0.072%)
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F3# 184.997 Hz -> $0159 ( 1 89) ~ 184.870 Hz (-0.069%)
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G3 195.998 Hz -> $0145 ( 1 69) ~ 196.247 Hz (+0.127%)
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G3# 207.652 Hz -> $0133 ( 1 51) ~ 207.753 Hz (+0.049%)
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A3 220.000 Hz -> $0122 ( 1 34) ~ 219.932 Hz (-0.031%)
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A3# 233.082 Hz -> $0112 ( 1 18) ~ 232.775 Hz (-0.132%)
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B3 246.942 Hz -> $0102 ( 1 2) ~ 247.210 Hz (+0.109%)
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C4 261.626 Hz -> $00F4 ( 0 244) ~ 261.395 Hz (-0.088%)
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C4# 277.183 Hz -> $00E6 ( 0 230) ~ 277.306 Hz (+0.044%)
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D4 293.665 Hz -> $00D9 ( 0 217) ~ 293.918 Hz (+0.086%)
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D4# 311.127 Hz -> $00CD ( 0 205) ~ 311.123 Hz (-0.001%)
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E4 329.628 Hz -> $00C1 ( 0 193) ~ 330.468 Hz (+0.255%)
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F4 349.228 Hz -> $00B7 ( 0 183) ~ 348.526 Hz (-0.201%)
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F4# 369.994 Hz -> $00AC ( 0 172) ~ 370.816 Hz (+0.222%)
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G4 391.995 Hz -> $00A3 ( 0 163) ~ 391.290 Hz (-0.180%)
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G4# 415.305 Hz -> $009A ( 0 154) ~ 414.158 Hz (-0.276%)
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A4 440.000 Hz -> $0091 ( 0 145) ~ 439.864 Hz (-0.031%)
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A4# 466.164 Hz -> $0089 ( 0 137) ~ 465.549 Hz (-0.132%)
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B4 493.883 Hz -> $0081 ( 0 129) ~ 494.421 Hz (+0.109%)
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C5 523.251 Hz -> $007A ( 0 122) ~ 522.789 Hz (-0.088%)
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C5# 554.365 Hz -> $0073 ( 0 115) ~ 554.611 Hz (+0.044%)
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D5 587.330 Hz -> $006D ( 0 109) ~ 585.140 Hz (-0.373%)
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D5# 622.254 Hz -> $0067 ( 0 103) ~ 619.226 Hz (-0.487%)
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E5 659.255 Hz -> $0061 ( 0 97) ~ 657.529 Hz (-0.262%)
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F5 698.456 Hz -> $005B ( 0 91) ~ 700.882 Hz (+0.347%)
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F5# 739.989 Hz -> $0056 ( 0 86) ~ 741.631 Hz (+0.222%)
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G5 783.991 Hz -> $0051 ( 0 81) ~ 787.411 Hz (+0.436%)
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G5# 830.609 Hz -> $004D ( 0 77) ~ 828.315 Hz (-0.276%)
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A5 880.000 Hz -> $0048 ( 0 72) ~ 885.837 Hz (+0.663%)
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A5# 932.328 Hz -> $0044 ( 0 68) ~ 937.945 Hz (+0.603%)
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B5 987.767 Hz -> $0041 ( 0 65) ~ 981.235 Hz (-0.661%)
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C6 1046.502 Hz -> $003D ( 0 61) ~1045.578 Hz (-0.088%)
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C6# 1108.731 Hz -> $003A ( 0 58) ~1099.660 Hz (-0.818%)
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D6 1174.659 Hz -> $0036 ( 0 54) ~1181.116 Hz (+0.550%)
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D6# 1244.508 Hz -> $0033 ( 0 51) ~1250.594 Hz (+0.489%)
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E6 1318.510 Hz -> $0030 ( 0 48) ~1328.756 Hz (+0.777%)
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F6 1396.913 Hz -> $002E ( 0 46) ~1386.528 Hz (-0.743%)
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F6# 1479.978 Hz -> $002B ( 0 43) ~1483.262 Hz (+0.222%)
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G6 1567.982 Hz -> $0029 ( 0 41) ~1555.616 Hz (-0.789%)
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G6# 1661.219 Hz -> $0026 ( 0 38) ~1678.428 Hz (+1.036%)
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A6 1760.000 Hz -> $0024 ( 0 36) ~1771.674 Hz (+0.663%)
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A6# 1864.655 Hz -> $0022 ( 0 34) ~1875.890 Hz (+0.603%)
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B6 1975.533 Hz -> $0020 ( 0 32) ~1993.133 Hz (+0.891%)
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C7 2093.005 Hz -> $001E ( 0 30) ~2126.009 Hz (+1.577%)
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C7# 2217.461 Hz -> $001D ( 0 29) ~2199.320 Hz (-0.818%)
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D7 2349.318 Hz -> $001B ( 0 27) ~2362.232 Hz (+0.550%)
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D7# 2489.016 Hz -> $001A ( 0 26) ~2453.087 Hz (-1.443%)
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E7 2637.020 Hz -> $0018 ( 0 24) ~2657.511 Hz (+0.777%)
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F7 2793.826 Hz -> $0017 ( 0 23) ~2773.055 Hz (-0.743%)
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F7# 2959.955 Hz -> $0016 ( 0 22) ~2899.103 Hz (-2.056%)
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G7 3135.963 Hz -> $0014 ( 0 20) ~3189.014 Hz (+1.692%)
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G7# 3322.438 Hz -> $0013 ( 0 19) ~3356.856 Hz (+1.036%)
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A7 3520.000 Hz -> $0012 ( 0 18) ~3543.348 Hz (+0.663%)
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A7# 3729.310 Hz -> $0011 ( 0 17) ~3751.781 Hz (+0.603%)
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B7 3951.066 Hz -> $0010 ( 0 16) ~3986.267 Hz (+0.891%)
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C8 4186.009 Hz -> $000F ( 0 15) ~4252.018 Hz (+1.577%)
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C8# 4434.922 Hz -> $000E ( 0 14) ~4555.734 Hz (+2.724%)
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D8 4698.636 Hz -> $000E ( 0 14) ~4555.734 Hz (-3.041%)
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D8# 4978.032 Hz -> $000D ( 0 13) ~4906.175 Hz (-1.443%)
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E8 5274.041 Hz -> $000C ( 0 12) ~5315.023 Hz (+0.777%)
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F8 5587.652 Hz -> $000B ( 0 11) ~5798.206 Hz (+3.768%)
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F8# 5919.911 Hz -> $000B ( 0 11) ~5798.206 Hz (-2.056%)
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G8 6271.927 Hz -> $000A ( 0 10) ~6378.027 Hz (+1.692%)
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G8# 6644.875 Hz -> $000A ( 0 10) ~6378.027 Hz (-4.016%)
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```
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