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@@ -1,11 +1,8 @@ |
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main.csd
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Pete Shadbolt.2014
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Based on code by Iain McCurdy, 2006
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THE delay OPCODE IS PLACED IN A SEPARATE, ALWAYS ON, INSTRUMENT FROM THE SOURCE SOUND PRODUCING INSTRUMENT.
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THE IS A COMMONLY USED TECHNIQUE WITH TIME SMEARING OPCODES AND EFFECTS LIKE REVERBS AND DELAYS.
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ksmps MAY NEED TO BE LOW (AND kr THEREFORE HIGH) WHEN WORKING WITH SHORT DELAY TIMES DEFINED INITIALLY AT KRATE
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TODO: implement octave down/up (like old delay pedal), key control, panic button
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<CsoundSynthesizer>
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@@ -15,99 +12,90 @@ ksmps MAY NEED TO BE LOW (AND kr THEREFORE HIGH) WHEN WORKING WITH SHORT DELAY T |
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<CsInstruments>
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sr = 44100 ;SAMPLE RATE
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ksmps = 4 ;NUMBER OF AUDIO SAMPLES IN EACH CONTROL CYCLE (MAY NEED TO BE LOW WHEN WORKING WITH SHORT DELAY TIMES DEFINED INITIALLY AT KRATE)
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nchnls = 2 ;NUMBER OF CHANNELS (2=STEREO)
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0dbfs = 1 ;MAXIMUM AMPLITUDE
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;FLTK INTERFACE CODE;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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FLcolor 255, 255, 255, 0, 0, 0
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; LABEL | WIDTH | HEIGHT | X | Y
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FLpanel "M I L C H L O D E", 500, 300, 0, 0
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; ON | OFF | TYPE | WIDTH | HEIGHT | X | Y | OPCODE | INS | STARTTIM | DUR
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gkOnOff,ihOnOff FLbutton "Input On/Off", 1, 0, 22, 180, 25, 5, 5, 0, 1, 0, -1
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FLsetColor2 255, 255, 50, ihOnOff ;SET SECONDARY COLOUR TO YELLOW
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;GENERAL_TEXT_SETTINGS SIZE | FONT | ALIGN | RED | GREEN | BLUE
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FLlabel 13, 1, 3, 255, 255, 255 ;LABELS MADE INVISIBLE (I.E. SAME COLOR AS PANEL)
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;BUTTON BANKS TYPE | NUMX | NUMY | WIDTH | HEIGHT | X | Y | OPCODE | INS | STARTTIM | DUR
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;gkinput, ihinput FLbutBank 14, 1, 2, 18, 40, 250, 0, -1
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;GENERAL_TEXT_SETTINGS SIZE | FONT | ALIGN | RED | GREEN | BLUE
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FLlabel 13, 1, 3, 0, 0, 0 ;LABELS MADE VISIBLE AGAIN
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;VALUE_DISPLAY_BOXES WIDTH | HEIGHT | X | Y
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iddlt FLvalue " ", 80, 20, 5, 75
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idmix FLvalue " ", 80, 20, 5, 125
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idfeedbackamt FLvalue " ", 80, 20, 5, 175
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idamp FLvalue " ", 80, 20, 5, 225
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idporttime FLvalue " ", 80, 20, 5, 275
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;SLIDERS MIN | MAX | EXP | TYPE | DISP | WIDTH | HEIGHT | X | Y
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gkdlt,ihdlt FLslider "Delay Time (sec)", .001, 5, -1, 23, iddlt, 490, 25, 5, 50
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gkmix,ihmix FLslider "Dry/Wet Mix", 0, 1, 0, 23, idmix, 490, 25, 5, 100
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gkfeedamt,ihfeedamt FLslider "Feedback Ratio", -1, 1, 0, 23, idfeedbackamt, 490, 25, 5, 150
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gkamp,ihamp FLslider "Output Amplitude Rescaling", 0, 1, 0, 23, idamp, 490, 25, 5, 200
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gkporttime,ihporttime FLslider "Portamento Time", 0, 2, 0, 23, idporttime, 490, 25, 5, 250
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gkingain,ihingain FLslider "Live Input Gain", 0, 1, 0, 23, -1, 140, 20, 350, 5
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;SET_INITIAL_VALUES VALUE | HANDLE
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FLsetVal_i 1, ihOnOff
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FLsetVal_i .5, ihingain
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FLsetVal_i .5, ihdlt
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FLsetVal_i 0.5, ihmix
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FLsetVal_i 0.7, ihfeedamt
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FLsetVal_i .7, ihamp
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FLsetVal_i 0.3, ihporttime
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FLpanel_end ;END OF PANEL CONTENTS
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FLrun ;RUN THE FLTK WIDGET THREAD
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;END OF FLTK INTERFACE CODE;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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instr 1 ;PLAYS FILE
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if gkOnOff=0 then ;SENSE FLTK ON/OFF SWITCH
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turnoff ;TURN THIS INSTRUMENT OFF IMMEDIATELY
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endif
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asigL, asigR ins ;TAKE INPUT FROM COMPUTER'S AUDIO INPUT
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gasigL = asigL * gkingain ;SCALE USING 'Input Gain' SLIDER
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gasigR = asigR * gkingain ;SCALE USING 'Input Gain' SLIDER
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sr = 44100 ;Sample rate
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ksmps = 20 ;Number of audio samples in each control cycle
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nchnls = 2 ;Number of channels (2=stereo)
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0dbfs = 1 ;Maximum amplitude
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gkporttime = 0.3; portamento time
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;FLTK GUI interface
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FLcolor 200, 200, 255, 0, 0, 0
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FLpanel "M I L C H L O D E", 500, 300, 0, 0, 0, 1
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gkOnOff,ihOnOff FLbutton "Input On/Off", 1, 0, 22, 180, 25, 5, 5, 0, 1, 0, -1
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; Sliders
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gkdlt,ihdlt FLslider "Delay Time (sec)", .001, 5, 0, 23, -1, 490, 25, 5, 50
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gkmix,ihmix FLslider "Dry/Wet Mix", 0, 1, 0, 23, -1, 490, 25, 5, 100
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gkfeedamt,ihfeedamt FLslider "Feedback Ratio", -1, 1, 0, 23, -1, 490, 25, 5, 150
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gkamp,ihamp FLslider "Output Amplitude Rescaling", 0, 1, 0, 23, -1, 490, 25, 5, 200
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gkingain,ihingain FLslider "Input Gain", 0, 1, 0, 23, -1, 140, 20, 350, 5
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ih FLbox "Keys: ", 1, 5, 14, 490, 20, 0, 250
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;Set defaults
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FLsetVal_i 1, ihOnOff
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FLsetVal_i .5, ihingain
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FLsetVal_i 4, ihdlt
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FLsetVal_i 0.5, ihmix
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FLsetVal_i 0.95, ihfeedamt
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FLsetVal_i .7, ihamp
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FLpanel_end ;End of GUI
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FLrun ;Run the FLTK thread
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; Instr 1 is the source
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instr 1
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; Turn off with the switch
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if gkOnOff=0 then
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turnoff
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endif
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; Get input from mic/line
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asigL, asigR ins
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gasigL = asigL * gkingain
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gasigR = asigR * gkingain
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endin
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instr 2 ;DELAY INSTRUMENT
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kporttime linseg 0, .001, 1, 1, 1 ;USE OF AN ENVELOPE VALUE THAT QUICKLY RAMPS UP FROM ZERO TO 1. THIS PREVENTS VARIABLES GLIDING TO THEIR REQUIRED VALUES EACH TIME THE INSTRUMENT IS STARTED.
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kporttime = kporttime * gkporttime ;SCALE PORTAMENTO FUNCTION WITH FLTK SLIDER VALUE
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kdlt portk gkdlt, kporttime ;PORTAMENTO IS APPLIED TO THE VARIABLE 'gkdlt'. A NEW VARIABLE 'kdlt' IS CREATED.
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adlt interp kdlt ;A NEW A-RATE VARIABLE 'adlt' IS CREATED BY INTERPOLATING THE K-RATE VARIABLE 'kdlt'
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;;;LEFT CHANNEL DELAY;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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abufferL delayr 5 ;CREATE A DELAY BUFFER OF 5 SECONDS DURATION (EQUIVALENT TO THE MAXIMUM DELAY TIME POSSIBLE USING THIS EXAMPLE)
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adelsigL deltap3 adlt ;TAP THE DELAY LINE AT gkdlt SECONDS
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delayw gasigL + (adelsigL * gkfeedamt) ;WRITE AUDIO SOURCE AND FEEDBACK SIGNAL INTO THE BEGINNING OF THE BUFFER
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;;;RIGHT CHANNEL DELAY;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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abufferR delayr 5 ;CREATE A DELAY BUFFER OF 5 SECONDS DURATION (EQUIVALENT TO THE MAXIMUM DELAY TIME POSSIBLE USING THIS EXAMPLE)
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adelsigR deltap3 adlt ;TAP THE DELAY LINE AT gkdlt SECONDS
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delayw gasigR + (adelsigR * gkfeedamt) ;WRITE AUDIO SOURCE AND FEEDBACK SIGNAL INTO THE BEGINNING OF THE BUFFER
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aL ntrpol gasigL, adelsigL, gkmix
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aR ntrpol gasigR, adelsigR, gkmix
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outs aL * gkamp, aR * gkamp ;CREATE A MIX BETWEEN THE WET AND THE DRY SIGNALS AT THE OUTPUT
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clear gasigL, gasigR ;CLEAR THE GLOBAL AUDIO SEND VARIABLES
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; Instr 2 is the delay line
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instr 2
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; Sense keyboard
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kKey FLkeyIn
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kChanged changed kKey
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printk2 kKey
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;if kKey=112&&kChanged=1 then
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;printf_i "awd"
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;FLsetVal_i 0.0, gkfeedamt
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;endif
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kporttime linseg 0, .001, 1, 1, 1 ;A short envelope
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kporttime = kporttime * gkporttime ;TODO: remove this
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kdlt portk gkdlt, kporttime ;Apply portamento
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adlt interp kdlt ;Interpolate
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;Left channel
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abufferL delayr 5 ;Buffer
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adelsigL deltap3 adlt ;Tap
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delayw gasigL + (adelsigL * gkfeedamt) ;Feedback
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;Right channel
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abufferR delayr 5 ;Buffer
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adelsigR deltap3 adlt ;Tap
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delayw gasigR + (adelsigR * gkfeedamt) ;Feedback
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aL ntrpol gasigL, adelsigL, gkmix
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aR ntrpol gasigR, adelsigR, gkmix
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outs aL * gkamp, aR * gkamp ;Mix wet/dry
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clear gasigL, gasigR ;Clear global audio sends
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endin
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</CsInstruments>
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<CsScore>
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;INSTR | START | DURATION
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i 2 0 -1 ;INSTRUMENT 2 (DELAY INSTRUMENT) PLAYS A HELD NOTE
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i 2 0 -1 ;Instrument 2 plays a held note
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f 0 3600 ;'DUMMY' SCORE EVENT KEEPS REALTIME PERFORMANCE GOING FOR 1 HOUR
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f 0 3600 ;Keep performance going
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</CsScore>
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</CsoundSynthesizer>
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Pete Shadbolt
10 jaren geleden