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Unknown | 1994-12-20 | 10.0 KB | [?Syd/?Syn] |
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Confidence | Program | Detection | Match Type | Support
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key | value |
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macFileType | [?Syd] |
macFileCreator | [?Syn] |
hex view+--------+-------------------------+-------------------------+--------+--------+
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|00000010| 00 00 00 00 0e 27 07 80 | 84 1e 00 08 01 01 80 84 |.....'..|........|
|00000020| 1e 00 00 12 7a 00 01 00 | 15 00 00 00 23 73 6f 6e |....z...|....#son|
|00000030| 67 20 70 6f 73 74 70 72 | 6f 63 65 73 73 69 6e 67 |g postpr|ocessing|
|00000040| 0a 04 00 00 00 02 20 00 | 22 00 f4 01 22 01 08 00 |...... .|"..."...|
|00000050| 00 00 41 64 64 69 74 69 | 76 65 00 00 00 00 00 00 |..Additi|ve......|
|00000060| 00 00 00 00 00 00 00 00 | 40 42 0f 00 00 00 00 00 |........|@B......|
|00000070| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000080| 00 00 00 00 40 42 0f 00 | 40 42 0f 00 00 00 00 00 |....@B..|@B......|
|00000090| 00 40 42 0f 00 00 00 00 | 00 00 00 00 00 00 01 01 |.@B.....|........|
|000000a0| 08 00 00 00 41 64 64 69 | 74 69 76 65 00 18 00 00 |....Addi|tive....|
|000000b0| 00 23 63 68 61 6e 6e 65 | 6c 20 70 6f 73 74 70 72 |.#channe|l postpr|
|000000c0| 6f 63 65 73 73 69 6e 67 | 0a 02 01 00 00 00 01 00 |ocessing|........|
|000000d0| 00 00 07 94 28 00 c0 00 | 00 00 00 00 00 00 00 00 |....(...|........|
|000000e0| 00 00 e8 03 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000000f0| ff ff e8 03 e8 03 00 00 | e8 03 00 00 00 00 00 00 |........|........|
|00000100| 02 20 00 22 00 f4 01 22 | 01 07 00 00 00 4d 75 6c |. ."..."|.....Mul|
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|00000280| 61 6e 6e 65 6c 20 70 6f | 73 74 70 72 6f 63 65 73 |annel po|stproces|
|00000290| 73 69 6e 67 0a 02 05 00 | 00 00 01 00 00 00 05 96 |sing....|........|
|000002a0| 28 00 c0 00 00 00 00 00 | 00 00 00 00 00 00 e8 03 |(.......|........|
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|00000390| 00 52 69 6e 67 00 00 00 | 00 00 00 00 00 00 00 00 |.Ring...|........|
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|00000500| 03 00 00 00 00 00 00 00 | 00 00 00 00 00 ff ff e8 |........|........|
|00000510| 03 e8 03 00 00 e8 03 00 | 00 01 00 00 00 07 94 28 |........|.......(|
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|00000550| 00 00 00 00 00 00 00 00 | 00 00 00 03 00 00 00 01 |........|........|
|00000560| 4f 00 2d 00 0e 02 32 01 | 08 00 00 00 53 61 77 74 |O.-...2.|....Sawt|
|00000570| 6f 6f 74 68 e9 00 00 00 | 23 20 67 65 6e 65 72 61 |ooth....|# genera|
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|000005a0| 61 72 72 61 79 28 64 61 | 74 61 3a 66 69 78 65 64 |array(da|ta:fixed|
|000005b0| 61 72 72 61 79 2c 20 73 | 74 61 72 74 3a 69 6e 74 |array, s|tart:int|
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|000005d0| 61 72 72 61 79 0a 09 28 | 0a 09 09 76 61 72 20 69 |array..(|...var i|
|000005e0| 3a 69 6e 74 20 3d 20 30 | 3b 0a 09 09 77 68 69 6c |:int = 0|;...whil|
|000005f0| 65 20 69 20 3c 20 6c 65 | 6e 20 64 6f 0a 09 09 09 |e i < le|n do....|
|00000600| 28 0a 09 09 09 09 73 65 | 74 20 64 61 74 61 5b 69 |(.....se|t data[i|
|00000610| 20 2b 20 73 74 61 72 74 | 5d 20 3a 3d 20 66 69 78 | + start|] := fix|
|00000620| 65 64 28 2d 31 20 2b 20 | 32 20 2a 20 69 20 2f 20 |ed(-1 + |2 * i / |
|00000630| 28 6c 65 6e 20 2d 20 31 | 29 29 3b 0a 09 09 09 09 |(len - 1|));.....|
|00000640| 73 65 74 20 69 20 3a 3d | 20 69 20 2b 20 31 3b 0a |set i :=| i + 1;.|
|00000650| 09 09 09 29 3b 0a 09 09 | 64 61 74 61 0a 09 29 3b |...);...|data..);|
|00000660| 0a 01 12 00 23 00 5f 02 | 42 01 0b 00 00 00 54 6f |....#._.|B.....To|
|00000670| 6e 65 20 46 69 6c 74 65 | 72 6a 05 00 00 23 20 66 |ne Filte|rj...# f|
|00000680| 69 72 73 74 20 6f 72 64 | 65 72 20 72 65 63 75 72 |irst ord|er recur|
|00000690| 73 69 76 65 20 66 69 6c | 74 65 72 2e 0a 23 20 66 |sive fil|ter..# f|
|000006a0| 72 6f 6d 20 41 70 70 65 | 6e 64 69 78 20 28 70 61 |rom Appe|ndix (pa|
|000006b0| 67 65 20 33 34 39 29 20 | 6f 66 0a 23 20 44 6f 64 |ge 349) |of.# Dod|
|000006c0| 67 65 2c 20 43 68 61 72 | 6c 65 73 20 61 6e 64 20 |ge, Char|les and |
|000006d0| 4a 65 72 73 65 2c 20 54 | 68 6f 6d 61 73 20 41 2e |Jerse, T|homas A.|
|000006e0| 0a 23 20 43 6f 6d 70 75 | 74 65 72 20 4d 75 73 69 |.# Compu|ter Musi|
|000006f0| 63 3a 20 20 53 79 6e 74 | 68 65 73 69 73 2c 20 43 |c: Synt|hesis, C|
|00000700| 6f 6d 70 6f 73 69 74 69 | 6f 6e 2c 20 61 6e 64 20 |ompositi|on, and |
|00000710| 50 65 72 66 6f 72 6d 61 | 6e 63 65 0a 23 20 53 63 |Performa|nce.# Sc|
|00000720| 68 69 72 6d 65 72 20 42 | 6f 6f 6b 73 2c 20 4e 65 |hirmer B|ooks, Ne|
|00000730| 77 20 59 6f 72 6b 2c 20 | 31 39 38 35 0a 0a 23 20 |w York, |1985..# |
|00000740| 66 69 6c 74 65 72 20 73 | 65 74 20 75 70 20 66 75 |filter s|et up fu|
|00000750| 6e 63 74 69 6f 6e 0a 23 | 20 20 20 66 63 20 3d 20 |nction.#| fc = |
|00000760| 63 75 74 6f 66 66 20 66 | 72 65 71 75 65 6e 63 79 |cutoff f|requency|
|00000770| 20 69 6e 20 48 65 72 74 | 7a 2e 0a 23 20 20 20 20 | in Hert|z..# |
|00000780| 20 66 63 20 3c 20 30 20 | 3d 3e 20 68 69 67 68 20 | fc < 0 |=> high |
|00000790| 70 61 73 73 20 66 69 6c | 74 65 72 0a 23 20 20 20 |pass fil|ter.# |
|000007a0| 20 20 66 63 20 3e 20 30 | 20 3d 3e 20 6c 6f 77 20 | fc > 0| => low |
|000007b0| 70 61 73 73 20 66 69 6c | 74 65 72 0a 23 20 20 20 |pass fil|ter.# |
|000007c0| 73 72 20 3d 20 73 61 6d | 70 6c 69 6e 67 20 72 61 |sr = sam|pling ra|
|000007d0| 74 65 20 69 6e 20 48 65 | 72 74 7a 0a 23 20 20 20 |te in He|rtz.# |
|000007e0| 72 65 74 75 72 6e 73 20 | 61 72 72 61 79 20 6f 66 |returns |array of|
|000007f0| 20 33 20 65 6c 65 6d 65 | 6e 74 73 20 74 6f 20 63 | 3 eleme|nts to c|
|00000800| 6f 6e 74 61 69 6e 20 77 | 6f 72 6b 73 70 61 63 65 |ontain w|orkspace|
|00000810| 20 66 6f 72 20 66 69 6c | 74 65 72 0a 66 75 6e 63 | for fil|ter.func|
|00000820| 20 74 6f 6e 65 73 65 74 | 28 66 63 3a 64 6f 75 62 | toneset|(fc:doub|
|00000830| 6c 65 2c 20 73 72 3a 64 | 6f 75 62 6c 65 29 20 3a |le, sr:d|ouble) :|
|00000840| 20 64 6f 75 62 6c 65 61 | 72 72 61 79 0a 09 28 0a | doublea|rray..(.|
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|00000860| 72 61 79 28 33 29 3b 0a | 09 09 76 61 72 20 62 3a |ray(3);.|..var b:|
|00000870| 64 6f 75 62 6c 65 20 3d | 20 32 20 2d 20 63 6f 73 |double =| 2 - cos|
|00000880| 28 32 20 2a 20 70 69 20 | 2a 20 66 63 20 2f 20 73 |(2 * pi |* fc / s|
|00000890| 72 29 3b 0a 09 09 73 65 | 74 20 61 5b 31 5d 20 3a |r);...se|t a[1] :|
|000008a0| 3d 20 73 71 72 74 28 62 | 20 2a 20 62 20 2d 20 31 |= sqrt(b| * b - 1|
|000008b0| 29 20 2d 20 62 3b 0a 09 | 09 73 65 74 20 61 5b 30 |) - b;..|.set a[0|
|000008c0| 5d 20 3a 3d 20 31 20 2a | 20 61 5b 31 5d 3b 0a 09 |] := 1 *| a[1];..|
|000008d0| 09 69 66 20 66 63 20 3c | 20 30 20 74 68 65 6e 20 |.if fc <| 0 then |
|000008e0| 73 65 74 20 61 5b 31 5d | 20 3a 3d 20 2d 61 5b 31 |set a[1]| := -a[1|
|000008f0| 5d 3b 0a 09 09 61 0a 09 | 29 3b 0a 0a 23 20 66 69 |];...a..|);..# fi|
|00000900| 6c 74 65 72 20 73 69 6e | 67 6c 65 20 73 74 65 70 |lter sin|gle step|
|00000910| 20 66 75 6e 63 74 69 6f | 6e 0a 23 20 20 20 78 69 | functio|n.# xi|
|00000920| 6e 20 3d 20 69 6e 70 75 | 74 20 73 61 6d 70 6c 65 |n = inpu|t sample|
|00000930| 20 76 61 6c 75 65 20 5b | 2d 31 2e 2e 31 5d 0a 23 | value [|-1..1].#|
|00000940| 20 20 20 61 20 3d 20 61 | 72 72 61 79 20 6f 62 74 | a = a|rray obt|
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|00000970| 65 77 20 73 61 6d 70 6c | 65 20 76 61 6c 75 65 0a |ew sampl|e value.|
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|00000b30| 20 69 20 2b 20 31 3b 0a | 09 09 09 09 09 29 3b 0a | i + 1;.|.....);.|
|00000b40| 09 09 09 09 73 65 74 20 | 63 6f 75 6e 74 20 3a 3d |....set |count :=|
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|00000b60| 3b 0a 09 09 73 65 74 20 | 69 20 3a 3d 20 30 3b 0a |;...set |i := 0;.|
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|00000b80| 64 6f 0a 09 09 09 28 0a | 09 09 09 09 73 65 74 20 |do....(.|....set |
|00000b90| 64 61 74 61 5b 73 74 61 | 72 74 20 2b 20 69 5d 20 |data[sta|rt + i] |
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|00000bf0| 09 00 00 00 4e 6f 72 6d | 61 6c 69 7a 65 8f 04 00 |....Norm|alize...|
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|00000c80| 3a 69 6e 74 20 3d 20 30 | 3b 0a 09 09 76 61 72 20 |:int = 0|;...var |
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|00000cc0| 20 70 6f 69 6e 74 3a 64 | 6f 75 62 6c 65 20 3d 20 | point:d|ouble = |
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+--------+-------------------------+-------------------------+--------+--------+