;Written by Iain McCurdy, 2009

;Modified for QuteCsound by René, September 2010, updated Feb 2011
;Tested on Ubuntu 10.04 with csound-float 5.13.0 and QuteCsound svn rev 817


;Notes on modifications from original csd:
;	Add table(s) for exp slider
;	Add Browser for audio files and use of FilePlay2 udo, now accept mono or stereo wav files

;	Cannot display more than one space in Label, so can't display the diagram as below:
;
;         klowcut                       khighcut
; ________                                      ______________
;         \\                                    /
;          \\                                  /
;           \\                                /
;            \\                              /
;             \\                            /
;      klowfull\\__________________________/ khighfull
      

;my flags on Ubuntu: -iadc -odac -b1024 -B2048 -+rtaudio=alsa -+rtmidi=null -m0
<CsoundSynthesizer>
<CsOptions>
--env:SSDIR+=../SourceMaterials
</CsOptions>
<CsInstruments>
sr 		= 44100	;SAMPLE RATE
ksmps 	= 256	;NUMBER OF AUDIO SAMPLES IN EACH CONTROL CYCLE
nchnls 	= 2		;NUMBER OF CHANNELS (2=STEREO)
0dbfs	= 1		;MAXIMUM SOUND INTENSITY LEVEL REGARDLESS OF BIT DEPTH


;TABLES THAT STORE FFT ANALYSIS ATTRIBUTES DATA
giFFTattributes0	ftgen	1, 0, 4, -2,  512, 256, 1024, 1
giFFTattributes1	ftgen	2, 0, 4, -2, 1024, 256, 1024, 1
giFFTattributes2	ftgen	3, 0, 4, -2, 2048, 256, 2048, 1
giFFTattributes3	ftgen	4, 0, 4, -2, 4096, 256, 4096, 1

;TABLE FOR EXP SLIDER
giExp20000		ftgen	0, 0, 129, -25, 0, 20.0, 128, 20000


opcode FilePlay2, aa, Skoo		; Credit to Joachim Heintz
	;gives stereo output regardless your soundfile is mono or stereo
	Sfil, kspeed, iskip, iloop	xin
	ichn		filenchnls	Sfil
	if ichn == 1 then
		aL		diskin2	Sfil, kspeed, iskip, iloop
		aR		=		aL
	else
		aL, aR	diskin2	Sfil, kspeed, iskip, iloop
	endif
		xout		aL, aR
endop


instr	10	;GUI
	ktrig	metro	10
	if (ktrig == 1)	then
		klowcut			invalue	"Low_Cut"
		gklowcut			tablei	klowcut, giExp20000, 1
						outvalue	"Low_Cut_Value", gklowcut		;init 100.0	
		klowfull			invalue	"Low_Full"
		gklowfull			tablei	klowfull, giExp20000, 1
						outvalue	"Low_Full_Value", gklowfull		;init 150.0	
		khighcut			invalue 	"High_Cut"
		gkhighcut			tablei	khighcut, giExp20000, 1
						outvalue	"High_Cut_Value", gkhighcut		;init 2800.0
		khighfull			invalue 	"High_Full"
		gkhighfull		tablei	khighfull, giExp20000, 1
						outvalue	"High_Full_Value", gkhighfull		;init 2900.0		
		gktype			invalue 	"Curve_Type"					;init 0.0
		
		gkinput			invalue	"Input"						;init 1
		gkFFTattributes	invalue	"FFTattributes"				;init 1

	endif
endin

instr 	1
	kSwitch		changed		gkFFTattributes							;GENERATE A MOMENTARY '1' PULSE IN OUTPUT 'kSwitch' IF ANY OF THE SCANNED INPUT VARIABLES CHANGE. (OUTPUT 'kSwitch' IS NORMALLY ZERO)
	if	kSwitch=1	then													;IF I-RATE VARIABLE IS CHANGED...
		reinit	UPDATE												;BEGIN A REINITIALISATION PASS IN ORDER TO EFFECT THIS CHANGE. BEGIN THIS PASS AT LABEL ENTITLED 'UPDATE' AND CONTINUE UNTIL rireturn OPCODE 
	endif															;END OF CONDITIONAL BRANCHING
	UPDATE:															;LABEL
	if	gkinput=0	then													;IF 'INPUT' SWITCH IS SET TO 'Live Input' THEN IMPLEMENT THE NEXT LINE OF CODE
		asig		inch		1											;READ AUDIO FROM THE COMPUTER'S LIVE INPUT CHANNEL 1 (LEFT)
	else																;IF 'INPUT' SWITCH IS NOT SET TO 'STORED FILE' THEN IMPLEMENT THE NEXT LINE OF CODE
		Sfile	invalue	"_Browse"
		;OUTPUT		OPCODE	FILE_PATH | SPEED | INSKIP | WRAPAROUND (1=ON)
		asig, asigR	FilePlay2	Sfile,       1,      0,        1				;READ A STORED AUDIO FILE FROM THE HARD DRIVE
	endif															;END OF 'IF'...'THEN' BRANCHING

	iFFTsize	table	0, i(gkFFTattributes)+1								;READ FFT SIZE FROM APPROPRIATE TABLE    
	ioverlap	table	1, i(gkFFTattributes)+1								;READ OVERLAP SIZE FROM APPROPRIATE TABLE
	iwinsize	table	2, i(gkFFTattributes)+1								;READ WINDOW SIZE FROM APPROPRIATE TABLE 
	iwintype	table	3, i(gkFFTattributes)+1								;READ WINDOW TYPE FROM APPROPRIATE TABLE 	

	fsig1  	pvsanal	asig, iFFTsize, ioverlap, iwinsize, iwintype				;ANALYSE THE AUDIO SIGNAL. OUTPUT AN F-SIGNAL.
	fsig2 	pvsbandr	fsig1, gklowcut, gklowfull, gkhighfull, gkhighcut, gktype  	;PERFORM fsig BAND REJECT FILTERING

	;OUTPUT	OPCODE	INPUT
	aresyn 	pvsynth  	fsig2	                   							;RESYNTHESIZE THE f-SIGNAL AS AN AUDIO SIGNAL
			outs		aresyn, aresyn										;SEND THE RESYNTHESIZED SIGNAL TO THE AUDIO OUTPUTS
endin
</CsInstruments>
<CsScore>
;INSTR | START | DURATION
i 10		0	   3600	;GUI
</CsScore>
</CsoundSynthesizer>

<bsbPanel>
 <label>Widgets</label>
 <objectName/>
 <x>516</x>
 <y>277</y>
 <width>849</width>
 <height>453</height>
 <visible>true</visible>
 <uuid/>
 <bgcolor mode="background">
  <r>241</r>
  <g>226</g>
  <b>185</b>
 </bgcolor>
 <bsbObject version="2" type="BSBLabel">
  <objectName/>
  <x>2</x>
  <y>2</y>
  <width>516</width>
  <height>450</height>
  <uuid>{aa607456-d368-4d59-8497-d16d608404c3}</uuid>
  <visible>true</visible>
  <midichan>0</midichan>
  <midicc>0</midicc>
  <label>pvsbandr</label>
  <alignment>center</alignment>
  <font>Liberation Sans</font>
  <fontsize>18</fontsize>
  <precision>3</precision>
  <color>
   <r>0</r>
   <g>0</g>
   <b>0</b>
  </color>
  <bgcolor mode="background">
   <r>181</r>
   <g>199</g>
   <b>255</b>
  </bgcolor>
  <bordermode>border</bordermode>
  <borderradius>5</borderradius>
  <borderwidth>2</borderwidth>
 </bsbObject>
 <bsbObject version="2" type="BSBLabel">
  <objectName/>
  <x>519</x>
  <y>2</y>
  <width>323</width>
  <height>450</height>
  <uuid>{74928ed2-b701-4668-9a11-74763d317e9b}</uuid>
  <visible>true</visible>
  <midichan>0</midichan>
  <midicc>0</midicc>
  <label>pvsbandr</label>
  <alignment>center</alignment>
  <font>Liberation Sans</font>
  <fontsize>18</fontsize>
  <precision>3</precision>
  <color>
   <r>0</r>
   <g>0</g>
   <b>0</b>
  </color>
  <bgcolor mode="background">
   <r>181</r>
   <g>199</g>
   <b>255</b>
  </bgcolor>
  <bordermode>border</bordermode>
  <borderradius>5</borderradius>
  <borderwidth>2</borderwidth>
 </bsbObject>
 <bsbObject version="2" type="BSBLabel">
  <objectName/>
  <x>521</x>
  <y>27</y>
  <width>316</width>
  <height>402</height>
  <uuid>{d4bdb5ce-87d8-4c8c-9c64-40ec2eed6f5a}</uuid>
  <visible>true</visible>
  <midichan>0</midichan>
  <midicc>0</midicc>
  <label>----------------------------------------------------------------------------
pvsbandr is an implementation of a band reject filter using phase vocoder analysis.
The shape of the filter is defined by specifying the nodes of maximum and minimum attenuation for the low cut and high cut aspects of the filter.
The diagram (taken from the Csound Manual) shown in csd, helps to illustrate this.
Using this system the user can continuously vary the cutoff slope of the filter.
The input parameter 'type' define the shape of the cutoff slope. A value of zero will give a linear shape, positive values will result in an exponential shape and negative values will give a logarithmic shape.
The user can select between a variety of combinations of parameters for the FFT analysis. Larger values for FFT size will give better harmonic reproduction but greater time smearing effects and higher computational cost. Lower values will result in less time smearing but greater harmonic distortion.
The user can choose between different input sources which includes the computer's live input.</label>
  <alignment>left</alignment>
  <font>Arial</font>
  <fontsize>14</fontsize>
  <precision>3</precision>
  <color>
   <r>0</r>
   <g>0</g>
   <b>0</b>
  </color>
  <bgcolor mode="nobackground">
   <r>255</r>
   <g>255</g>
   <b>255</b>
  </bgcolor>
  <bordermode>noborder</bordermode>
  <borderradius>1</borderradius>
  <borderwidth>1</borderwidth>
 </bsbObject>
 <bsbObject version="2" type="BSBButton">
  <objectName/>
  <x>8</x>
  <y>8</y>
  <width>100</width>
  <height>30</height>
  <uuid>{24979132-c53f-4414-ac6b-6b4f503ecfe8}</uuid>
  <visible>true</visible>
  <midichan>0</midichan>
  <midicc>0</midicc>
  <type>event</type>
  <pressedValue>1.00000000</pressedValue>
  <stringvalue/>
  <text>  ON / OFF</text>
  <image>/</image>
  <eventLine>i 1 0 -1</eventLine>
  <latch>true</latch>
  <latched>false</latched>
 </bsbObject>
 <bsbObject version="2" type="BSBLabel">
  <objectName/>
  <x>191</x>
  <y>280</y>
  <width>60</width>
  <height>30</height>
  <uuid>{b3560c14-84be-4876-9100-5807ffe16e97}</uuid>
  <visible>true</visible>
  <midichan>0</midichan>
  <midicc>0</midicc>
  <label>Input</label>
  <alignment>right</alignment>
  <font>Arial</font>
  <fontsize>10</fontsize>
  <precision>3</precision>
  <color>
   <r>0</r>
   <g>0</g>
   <b>0</b>
  </color>
  <bgcolor mode="nobackground">
   <r>255</r>
   <g>255</g>
   <b>255</b>
  </bgcolor>
  <bordermode>noborder</bordermode>
  <borderradius>1</borderradius>
  <borderwidth>1</borderwidth>
 </bsbObject>
 <bsbObject version="2" type="BSBDropdown">
  <objectName>Input</objectName>
  <x>252</x>
  <y>280</y>
  <width>110</width>
  <height>30</height>
  <uuid>{cdb2d3b2-5a09-4e13-865e-8501e33b9d35}</uuid>
  <visible>true</visible>
  <midichan>0</midichan>
  <midicc>0</midicc>
  <bsbDropdownItemList>
   <bsbDropdownItem>
    <name>Live Input</name>
    <value>0</value>
    <stringvalue/>
   </bsbDropdownItem>
   <bsbDropdownItem>
    <name>Audio File</name>
    <value>1</value>
    <stringvalue/>
   </bsbDropdownItem>
  </bsbDropdownItemList>
  <selectedIndex>1</selectedIndex>
  <randomizable group="0">false</randomizable>
 </bsbObject>
 <bsbObject version="2" type="BSBLabel">
  <objectName/>
  <x>9</x>
  <y>376</y>
  <width>502</width>
  <height>70</height>
  <uuid>{f0c4875d-4e35-4d37-b043-9c1476025645}</uuid>
  <visible>true</visible>
  <midichan>0</midichan>
  <midicc>0</midicc>
  <label>FFT Attributes</label>
  <alignment>left</alignment>
  <font>Arial</font>
  <fontsize>14</fontsize>
  <precision>3</precision>
  <color>
   <r>0</r>
   <g>0</g>
   <b>0</b>
  </color>
  <bgcolor mode="nobackground">
   <r>255</r>
   <g>255</g>
   <b>255</b>
  </bgcolor>
  <bordermode>border</bordermode>
  <borderradius>3</borderradius>
  <borderwidth>1</borderwidth>
 </bsbObject>
 <bsbObject version="2" type="BSBLabel">
  <objectName/>
  <x>168</x>
  <y>382</y>
  <width>300</width>
  <height>28</height>
  <uuid>{c2cdd204-e32b-488e-b5c2-70688fb2defa}</uuid>
  <visible>true</visible>
  <midichan>0</midichan>
  <midicc>0</midicc>
  <label>FFT Size - Overlap - Window Size - Window Type</label>
  <alignment>left</alignment>
  <font>Arial</font>
  <fontsize>10</fontsize>
  <precision>3</precision>
  <color>
   <r>0</r>
   <g>0</g>
   <b>0</b>
  </color>
  <bgcolor mode="nobackground">
   <r>255</r>
   <g>255</g>
   <b>255</b>
  </bgcolor>
  <bordermode>noborder</bordermode>
  <borderradius>1</borderradius>
  <borderwidth>1</borderwidth>
 </bsbObject>
 <bsbObject version="2" type="BSBDropdown">
  <objectName>FFTattributes</objectName>
  <x>168</x>
  <y>402</y>
  <width>274</width>
  <height>32</height>
  <uuid>{c8c311f9-c1b7-4bbb-becf-9c9f1fa862c9}</uuid>
  <visible>true</visible>
  <midichan>0</midichan>
  <midicc>0</midicc>
  <bsbDropdownItemList>
   <bsbDropdownItem>
    <name>512        256        1024             1</name>
    <value>0</value>
    <stringvalue/>
   </bsbDropdownItem>
   <bsbDropdownItem>
    <name>1024      256        1024             1</name>
    <value>1</value>
    <stringvalue/>
   </bsbDropdownItem>
   <bsbDropdownItem>
    <name>2048      256        2048             1</name>
    <value>2</value>
    <stringvalue/>
   </bsbDropdownItem>
   <bsbDropdownItem>
    <name>4096      256        4096             1</name>
    <value>3</value>
    <stringvalue/>
   </bsbDropdownItem>
  </bsbDropdownItemList>
  <selectedIndex>0</selectedIndex>
  <randomizable group="0">false</randomizable>
 </bsbObject>
 <bsbObject version="2" type="BSBDisplay">
  <objectName>Low_Cut_Value</objectName>
  <x>450</x>
  <y>73</y>
  <width>60</width>
  <height>30</height>
  <uuid>{a471f0a0-872d-45ce-8067-16edcf43702b}</uuid>
  <visible>true</visible>
  <midichan>0</midichan>
  <midicc>0</midicc>
  <label>312.653</label>
  <alignment>right</alignment>
  <font>Arial</font>
  <fontsize>9</fontsize>
  <precision>3</precision>
  <color>
   <r>0</r>
   <g>0</g>
   <b>0</b>
  </color>
  <bgcolor mode="nobackground">
   <r>255</r>
   <g>255</g>
   <b>255</b>
  </bgcolor>
  <bordermode>noborder</bordermode>
  <borderradius>1</borderradius>
  <borderwidth>1</borderwidth>
 </bsbObject>
 <bsbObject version="2" type="BSBHSlider">
  <objectName>Low_Cut</objectName>
  <x>10</x>
  <y>56</y>
  <width>500</width>
  <height>27</height>
  <uuid>{f14f89da-9ddf-4d52-9ec3-1d26969055ca}</uuid>
  <visible>true</visible>
  <midichan>0</midichan>
  <midicc>0</midicc>
  <minimum>0.00000000</minimum>
  <maximum>1.00000000</maximum>
  <value>0.39800000</value>
  <mode>lin</mode>
  <mouseControl act="jump">continuous</mouseControl>
  <resolution>-1.00000000</resolution>
  <randomizable group="0">false</randomizable>
 </bsbObject>
 <bsbObject version="2" type="BSBLabel">
  <objectName/>
  <x>10</x>
  <y>75</y>
  <width>180</width>
  <height>30</height>
  <uuid>{98b93c08-e505-4a89-8b08-f1c9fbf92c01}</uuid>
  <visible>true</visible>
  <midichan>0</midichan>
  <midicc>0</midicc>
  <label>Low Cut</label>
  <alignment>left</alignment>
  <font>Arial</font>
  <fontsize>10</fontsize>
  <precision>3</precision>
  <color>
   <r>0</r>
   <g>0</g>
   <b>0</b>
  </color>
  <bgcolor mode="nobackground">
   <r>255</r>
   <g>255</g>
   <b>255</b>
  </bgcolor>
  <bordermode>noborder</bordermode>
  <borderradius>1</borderradius>
  <borderwidth>1</borderwidth>
 </bsbObject>
 <bsbObject version="2" type="BSBLabel">
  <objectName/>
  <x>10</x>
  <y>116</y>
  <width>180</width>
  <height>30</height>
  <uuid>{a45554bb-09a2-40c7-90db-f301895af4ea}</uuid>
  <visible>true</visible>
  <midichan>0</midichan>
  <midicc>0</midicc>
  <label>Low Full</label>
  <alignment>left</alignment>
  <font>Arial</font>
  <fontsize>10</fontsize>
  <precision>3</precision>
  <color>
   <r>0</r>
   <g>0</g>
   <b>0</b>
  </color>
  <bgcolor mode="nobackground">
   <r>255</r>
   <g>255</g>
   <b>255</b>
  </bgcolor>
  <bordermode>noborder</bordermode>
  <borderradius>1</borderradius>
  <borderwidth>1</borderwidth>
 </bsbObject>
 <bsbObject version="2" type="BSBHSlider">
  <objectName>Low_Full</objectName>
  <x>10</x>
  <y>97</y>
  <width>500</width>
  <height>27</height>
  <uuid>{7bccbbd8-96f6-4c58-8210-5c45f467adff}</uuid>
  <visible>true</visible>
  <midichan>0</midichan>
  <midicc>0</midicc>
  <minimum>0.00000000</minimum>
  <maximum>1.00000000</maximum>
  <value>0.30400000</value>
  <mode>lin</mode>
  <mouseControl act="jump">continuous</mouseControl>
  <resolution>-1.00000000</resolution>
  <randomizable group="0">false</randomizable>
 </bsbObject>
 <bsbObject version="2" type="BSBDisplay">
  <objectName>Low_Full_Value</objectName>
  <x>450</x>
  <y>114</y>
  <width>60</width>
  <height>30</height>
  <uuid>{99f84362-9a1a-4063-9b94-adae67e9e45c}</uuid>
  <visible>true</visible>
  <midichan>0</midichan>
  <midicc>0</midicc>
  <label>163.335</label>
  <alignment>right</alignment>
  <font>Arial</font>
  <fontsize>9</fontsize>
  <precision>3</precision>
  <color>
   <r>0</r>
   <g>0</g>
   <b>0</b>
  </color>
  <bgcolor mode="nobackground">
   <r>255</r>
   <g>255</g>
   <b>255</b>
  </bgcolor>
  <bordermode>noborder</bordermode>
  <borderradius>1</borderradius>
  <borderwidth>1</borderwidth>
 </bsbObject>
 <bsbObject version="2" type="BSBLabel">
  <objectName/>
  <x>10</x>
  <y>157</y>
  <width>150</width>
  <height>30</height>
  <uuid>{9953cbaa-8c27-400f-bc75-706d4b94c0b2}</uuid>
  <visible>true</visible>
  <midichan>0</midichan>
  <midicc>0</midicc>
  <label>High Cut</label>
  <alignment>left</alignment>
  <font>Arial</font>
  <fontsize>10</fontsize>
  <precision>3</precision>
  <color>
   <r>0</r>
   <g>0</g>
   <b>0</b>
  </color>
  <bgcolor mode="nobackground">
   <r>255</r>
   <g>255</g>
   <b>255</b>
  </bgcolor>
  <bordermode>noborder</bordermode>
  <borderradius>1</borderradius>
  <borderwidth>1</borderwidth>
 </bsbObject>
 <bsbObject version="2" type="BSBHSlider">
  <objectName>High_Cut</objectName>
  <x>10</x>
  <y>138</y>
  <width>500</width>
  <height>27</height>
  <uuid>{e0921fc1-e6f7-4a32-85c8-533dc91e659d}</uuid>
  <visible>true</visible>
  <midichan>0</midichan>
  <midicc>0</midicc>
  <minimum>0.00000000</minimum>
  <maximum>1.00000000</maximum>
  <value>0.36400000</value>
  <mode>lin</mode>
  <mouseControl act="jump">continuous</mouseControl>
  <resolution>-1.00000000</resolution>
  <randomizable group="0">false</randomizable>
 </bsbObject>
 <bsbObject version="2" type="BSBDisplay">
  <objectName>High_Cut_Value</objectName>
  <x>450</x>
  <y>155</y>
  <width>60</width>
  <height>30</height>
  <uuid>{a23d1579-1122-4a03-98a4-dde5cb37c6a4}</uuid>
  <visible>true</visible>
  <midichan>0</midichan>
  <midicc>0</midicc>
  <label>247.276</label>
  <alignment>right</alignment>
  <font>Arial</font>
  <fontsize>9</fontsize>
  <precision>3</precision>
  <color>
   <r>0</r>
   <g>0</g>
   <b>0</b>
  </color>
  <bgcolor mode="nobackground">
   <r>255</r>
   <g>255</g>
   <b>255</b>
  </bgcolor>
  <bordermode>noborder</bordermode>
  <borderradius>1</borderradius>
  <borderwidth>1</borderwidth>
 </bsbObject>
 <bsbObject version="2" type="BSBLabel">
  <objectName/>
  <x>10</x>
  <y>198</y>
  <width>150</width>
  <height>30</height>
  <uuid>{dcc58561-8602-46a4-9614-8bbaf896f6bc}</uuid>
  <visible>true</visible>
  <midichan>0</midichan>
  <midicc>0</midicc>
  <label>High Full</label>
  <alignment>left</alignment>
  <font>Arial</font>
  <fontsize>10</fontsize>
  <precision>3</precision>
  <color>
   <r>0</r>
   <g>0</g>
   <b>0</b>
  </color>
  <bgcolor mode="nobackground">
   <r>255</r>
   <g>255</g>
   <b>255</b>
  </bgcolor>
  <bordermode>noborder</bordermode>
  <borderradius>1</borderradius>
  <borderwidth>1</borderwidth>
 </bsbObject>
 <bsbObject version="2" type="BSBHSlider">
  <objectName>High_Full</objectName>
  <x>10</x>
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