ECMC PVC example file twarp1


 Example PVC script used to create /sflib/x soundfile >> twarp1.wav <
# ECMC pvc example  twarp1: reading an anslysis forwards and
# backwards
# The analysis file input, created with ECMC pvc example "pvanalysis.voicetest,"# is the excerpt "post-processed by ..." from our old friend "voicetest."
# The analysis file is read forwards from beginning to end, then, 
# immediately, backwards from the end to beginning. To do this, we
# first create a function file with values rising linearly from 0 to
#  1.46 (the duration of the analysis file), then decreasing from 1.46 to 0:
 #  gen4 -L1000 0 0 0 .5 1.46 0 1. 0 > $SFDIR/timepointfunc # forward, then backwards

# Note: We could have created an identical function table file with gen3, like this:
#    gen3 -L100 0 1.46 0 > $SFDIR/timepointfunc # forward then backwards
# The values in this table are applied to 3 resynthesis parameters:
 # time_point=/$SFDIR/timepointfunc      # int, float or FUNC
# lower_time_boundary=$SFDIR/timepointfunc # 1 # 0   # int, float or FUNC
# upper_time_boundary=$SFDIR/timepointfunc # 1 # -1 #    # int, float or FUNC 
# We set the output duration to twice the length of the analysis file:
# duration=2.92  # this is double the duration of the analysis file 
# At the conclusion ofthe resynthesis job (then end of this file) we
# delete the function file from our soundfile directory, with this line:
 #   rm $SFDIR/timepointfunc 
 
#******************************************************
#......................TWARP ..........................
# time varying reading of an analysis file previously created with pvcanal
#******************************************************
     # ******ECMC CHANGES & ADDITIONS: ***************
#******** INPUT & OUTPUT SOUNDFILES *************
cd $SFDIR # all files will be created in your current working soundfile directory
input_analysis_file=voicetestclip.pvc
outputsf=twarp1.wav  # output soundfile
#......................................................
outputformat=1 # 0,1,2, or 3; 1 = 16 bit short ints; 2 = 32 bit floats; 3 = 24 bit ints
# 0 outputs 16 bit ints if samp. rate < 50000, 24 bit ints if samp rate > 50000

 ### VERY IMPORTANT: Change the 0 below to the desired output duration. If this
 # duration does not match the duration of the analysis, time warping will result
duration=2.92          # MUST BE CHANGED to desired output resynthesis duration
# ********************* #

   ##### Cmusic function file generator tempates #####
# These 2 (gen3 & gen4) function definitions are identical:
    # gen3 -Llength v1 v2 ... vN
 #gen3 -L100 0 1.46 0 > $SFDIR/timepointfunc # forward then backwards
    # gen4 -Llength t1 v1 a1 ... tN vN
 gen4 -L1000 0 0 0 .5 1.46 0 1. 0 > $SFDIR/timepointfunc

#   gen0  normalizes function files previously created with other gen routines
# gen0 -Llength  max < inputfuncfile > outputfuncfile
#   gen1 creates linear {straight line} segments, like Csound gen 7
# gen1 -Llength t1 v1 ... tN vN
#   gen2 generates harmonic waveforms from sine {a} & cosine {b} amps
# gen2 -Llength [-o (default) or -c] a1 ... aN b0 ... bM N
#  gen3 generates amp values & linear connections at equally spaced time points
# gen3 -Llength v1 v2 ... vN
#   gen4 generates exponenetial segments; "a" values determine shape &
#  depth of curve: 0 = linear, neg. = exponential, pos. = inverse expo.
# gen4 -Llength t1 v1 a1 ... tN vN
#  gen5 is like Csound gen 9 : harmonic1/amp/phase harmonic2/amp/phase
# gen5 -Llength h1 a1 p1 ... hN aN pN
#     gen6 generates a table of random numbers between +1 and -1
# gen6 -Llength
#    cspline: smooth curve {cubic spline} interpolator
# cspline len_flag [flags] x0 y0 x1 y1 ... xN yN
#   genraw reads in a previously created function file
# genraw -LN filename    (where N is the length of the output function.)
# For a usage summary of "reshape" type  "reshape"  with no arguments.
   ##### End of gen routine function generator tempates #####

#======================================================
#*** ANALYSIS PARAMETERS ******************************
windowsize=0    # default 0 sets windowsize (in samples) to 2 * FFT_length if
  #  samp. rate <= 48000 or to 4 * FFT_length if samp. rate > 48000
window_type=2
    # window type: 0 = Hamming,1 = rectangular, 2 = Blackman (DEFAULT),
    #  3 = Bartlett triangular, 4-12 = Kaiser windows for alpha = 4-12
    # generally recommended: 2 or 8

frames_per_second=200
  # Set the frame rate to a value >=  the frame rate used in the analysis.
  # Lesser frame rates create loss of amplitude and phasiness.
  # Default for both pvanalysis and twarp is 200
#======================================================
#*** RESYNTHESIS PARAMETERS ***************************

#........... OUTPUT CHANNEL(S) .......................
output_channel=0
   # (channels are numbered from 1 to maximum; 0 = resynthesize all channels

#.............OSCIL THRESHOLD ........................

oscillator_resynthesis_threshold_in_dB=-80   # usually -60 to -80

#****************** MODIFICATIONS *********************

#.................. AMPLITUDE OUTPUT in dB  ..........................

gain_in_decibels=0   # int, float or FUNC

#.................. PITCH .............................

frequency_shift=0   # int, float or FUNC
pitch_transposition_in_semitones=0   # int, float or FUNC

#................ AMPLITUDE & FREQUENCY ENVELOPE RESPONSES .................

attack_time_in_seconds=0     # amplitude   # int, float or FUNC
release_time_in_seconds=0     # amplitude   # int, float or FUNC

frequency_change_response_time_in_seconds=0  # frequency   # int, float or FUNC

#======================================================
#**************** DATA TIME **************************
# Controls time varying reading of the analysis file 
DATA_access_mode__explicit_0__rate_1=0  # 0 = explicit, 1 = rate
   # In rate mode, set time_point to initial position & use rate_multiplier to
   # control speed at which analysis file is read (1 = original speed)
   # In explicit mode, control time_point with a function.
   #   (Rate_multiplier is nonfunctional in explicit mode.)
time_point=$SFDIR/timepointfunc   # int, float or FUNC
rate_multiplier=1

#......................................................

lower_time_boundary=$SFDIR/timepointfunc   # int, float or FUNC
upper_time_boundary=$SFDIR/timepointfunc   # int, float or FUNC
    #(upper time < 0 defaults to file duration)

#.....AUTOSTOP ........................................
autostop_on_1__off_0=1
    # When on (1) , this will terminate synthesis if a boundary is crossed.

#......TIMEPOINT DITHER ...............................
timepoint_dither_window_in_seconds=0 
time_point_change_response_time_in_seconds=0
  # Unless you want flanging, time_point_change_response_time should typically
  # be set to between .01 and .05

#******************************************************
#********** SPECTRUM MODIFICATIONS ********************
#******************************************************

#............ SPECTRUM WARPSHAPE ......................
spectrum_warpshape_index=0   # int, float or FUNC
        # neg. values increase brightness, positive values descrease brightness

#............. SPECTRUM COMPRESSION ...................
spectrum_compression_threshold_in_decibels=-0
spectrum_decibels_of_compression=-0

#............. RANDOM AMPLITUDE VARIATION ............

random_amplitude_variation_decibel_floor=-0  # int, float or FUNC
amplitude_variation_response_time_in_seconds=0  # int, float or FUNC

#======================================================
#************** LOW/HIGH SHELF EQ *********************
LOW_SHELF_EQ_gain_in_decibels=-0   # int, float or FUNC to boost or cut low frequencies
LOW_SHELF_EQ_frequency=40  # int, float or FUNC

HIGH_SHELF_EQ_gain_in_decibels=-0  #int, float or FUNC to boost or cut high frequencies
HIGH_SHELF_EQ_frequency=60  # int, float or FUNC
#======================================================
#............ RESCALE  for floating point only.................
rescale_level_in_decibels=0
   # set to 1 to rescale to peak of input file; do not do this if input amplitude
   # is low
#************ AMPLITUDE STATISTICS ******************** 
print_amplitude_statistics_0_no__1_yes=1  # use 0 to turn off amplitude display
amplitude_statistics_time_interval=.25


#======================================================
# COMMAND LINE SETUP -- OFFICE USE ONLY
# (DO NOT WRITE BELOW THIS LINE EXCEPT TO DELETE FUNCTION FILES AT VERY END) 
#====================================================
# SYNTHESIS
pvroutine=twarp  # ECMC
#  ****** TKLA changes & additions ****** #
 $pvroutine -d.1 -F$input_analysis_file pvcout 2> twarptmp$$
 SR=`/usr/local/bin/sfsr $SFDIR/pvcout | awk '{print $1}'` ; rm -f pvcout
if  ( ( [ "$outputformat" == 1 ] ) || ( [ "$outputformat" == 2 ] ) ) ; then
  output_data_format=$outputformat ; output_file=$outputsf
elif  ( [ "$outputformat" == 3 ] ) ; then output_file=pvcout ; rm -f  pvcout ; 
  output_data_format=2 
elif  ( [ "$outputformat" == 0 ] ) ; then
 if ( [ `echo "$SR"` -gt 50000 ] ) ; then
   output_data_format=2 ; output_file=pvcout
 else
   output_data_format=1 ; output_file=$outputsf
 fi
fi
if ( ( [ `expr "$SR" \> "48000"` == 1 ] ) &&  ( [ "$windowsize" == "0" ] ) ) ; then
       # if SR is > 48000 & windowsize is set to 0 increase default windowsize
 FFTSIZE=`grep FFT\ SIZE twarptmp$$ | grep -v INPUT\ ANALYSIS | awk '{print $4}'`
  windowsize=`expr $FFTSIZE \* 4`
fi
 rm -f twarptmp$$
#  ****** end of TKLA changes & additions ****** #

PVFLAGS="\
\
-M$windowsize \
-w$window_type \
-D$frames_per_second \
-d$duration \
\
-a$frequency_shift \
-P$pitch_transposition_in_semitones \
-A$gain_in_decibels \
\
-C$output_channel \
-t$oscillator_resynthesis_threshold_in_dB \
\
\
-F$input_analysis_file \
\
-u$DATA_access_mode__explicit_0__rate_1 \
-Q$time_point \
-Y$rate_multiplier \
-g$lower_time_boundary \
-G$upper_time_boundary \
-T$timepoint_dither_window_in_seconds \
-K$time_point_change_response_time_in_seconds \
\
-L$release_time_in_seconds \
-l$attack_time_in_seconds \
-f$frequency_change_response_time_in_seconds \
\
-W$spectrum_warpshape_index \
\
-b$random_amplitude_variation_decibel_floor \
-e$amplitude_variation_response_time_in_seconds \
\
-E$spectrum_compression_threshold_in_decibels \
-c$spectrum_decibels_of_compression \
\
-H$LOW_SHELF_EQ_gain_in_decibels \
-m$LOW_SHELF_EQ_frequency \
\
-X$HIGH_SHELF_EQ_gain_in_decibels \
-R$HIGH_SHELF_EQ_frequency \
\
-p$print_amplitude_statistics_0_no__1_yes \
-i$amplitude_statistics_time_interval \
\
-S$autostop_on_1__off_0 \
\
-_$output_data_format \
-=$rescale_level_in_decibels \
\
\
"
echo "\n$pvroutine $PVFLAGS  $output_file" ; 

$pvroutine $PVFLAGS  $output_file   ; 

# *****  TKLA CHANGES & ADDITIONS: ******* #
if ( ( [ "$outputformat" == "3" ] ) || ( [ "$outputformat" == "0" ] ) &&  ( [ "$output_file" == "pvcout" ] ) ) ; then
      echo "Converting temporary float output file pvcout to $outputsf :"
      floatto24 pvcout $outputsf 2> /dev/null  ; rm -f pvcout
   echo " -------------------------------------------------------"
else
   echo " -------------------------------------------------------"
   echo "Header information for output soundfile >> $outputsf << :"
   /usr/local/bin/sfinfo -s $outputsf 
fi
#  ****** end of TKLA changes & additions ****** #

# If you have created any gen function files above delete them below:
rm $SFDIR/timepointfunc