78 lines
2.1 KiB
Text
78 lines
2.1 KiB
Text
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#lang scribble/manual
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@(require (for-label racket))
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@title{(record-buf bufnum offset reclevel prelevel run loop trigger inputs)}
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Records input into a Buffer.
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If recLevel is 1.0 and preLevel is 0.0 then the new input
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overwrites the old data. If they are both 1.0 then the new data is
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added to the existing data. (Any other settings are also valid.)
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bufnum - the index of the buffer to use
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offset - an offset into the buffer in samples, default 0
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recLevel - value to multiply by input before mixing with
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existing data. Default is 1.0.
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preLevel - value to multiply to existing data in buffer before
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mixing with input. Default is 0.0.
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run - If zero, then recording stops, otherwise recording
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proceeds. Default is 1.
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loop - If zero then don't loop, otherwise do. This is
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modulate-able. Default is 1.
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trigger - a trigger causes a jump to the start of the Buffer.
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A trigger occurs when a signal changes from <=0 to >0.
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inputArray - an Array of input channels
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(with-sc3
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(lambda (fd)
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(send-synth
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fd
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"recorder"
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(letc ((in 0)
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(bufnum 0)
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(offset 1)
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(recLevel 1)
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(preLevel 0)
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(run 1)
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(loop 1)
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(trigger 1))
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(let ((i (in 2 ar in)))
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(out 0 (record-buf bufnum offset recLevel preLevel run loop trigger i)))))
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(let ((b 10)
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(y 1001)
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(z 1002))
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(async fd (/b_alloc b 44100 2))
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(send fd (/s_new "recorder" y add-to-tail 1 "bufnum" b "in" 8))
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(send fd (/n_trace y))
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(send-synth
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fd
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"player"
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(letc ((bufnum 0)
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(rate 1)
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(trigger 1)
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(startPos 0)
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(loop 1)
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(gain 1))
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(out 0 (mul (play-buf 2 bufnum rate trigger startPos loop) gain))))
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(send fd (/s_new "player" z add-to-tail 1 "bufnum" b)))))
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(define do-send
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(lambda (m)
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(with-sc3
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(lambda (fd)
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(send fd m)))))
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(do-send (/n_set 1001 "run" 1))
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(do-send (/n_set 1002 "loop" 1))
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(do-send (/n_set 1002 "gain" 2))
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(do-send (/n_set 1002 "trigger" 1))
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(do-send (/n_free 1001))
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(do-send (/n_free 1002))
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(with-sc3
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(lambda (fd)
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(async fd (/b_free 10))))
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