/sflib/x example soundfile "twarp4" is a linear mix of two soundfiles, produced by ECMC PVC examples "twarp4-1" and "twarp4-2."

twarp4-1:

The first 1.05 seconds of the analysis file is read forwards

and backwards, following the shape of the first half of a sine wave:

The output duration is increased to 5.82:gen5 -L1000 .5 1. 0 | reshape -M1.05 > /$SFDIR/f1

time_point=/$SFDIR/f1 # int, float or FUNC

lower_time_boundary=$SFDIR/f1 # int, float or FUNC

upper_time_boundary=$SFDIR/f1 # int, float or FUNC

The analysis is read at 1/2 the original speed:duration=5.84 # CHANGE the 0 to the desired output duration.

The pitch is transposed down a major 7th:rate_multiplier=.5 # int, float or FUNC

But 80 herz is added to all frequencies:pitch_transposition_in_semitones=-11 # int, float or FUNC

The output gain is increased to compensate for amplitude attenuation resulting from the processing:frequency_shift=80 # int, float or FUNC

gain_in_decibels=9 # int, float or FUNC

"twarp4-2" is identical to example "twarp4," but also includes EQ parameters to add 12 dB of gain to frequencies 800 hz and above, and to attentuate frequencies below 100 hz by 12 dB

FILTER_LOW_SHELF_EQ_gain_in_decibels=-12

FILTER_LOW_SHELF_EQ_frequency=100

FILTER_HIGH_SHELF_EQ_gain_in_decibels=12

FILTER_HIGH_SHELF_EQ_frequency=800

To see the source files for "twarp4-1" or "twarp4-2" type

pvcex twarp4-1or elsegetex twarp4-1 pvcex twarp4-2or elsegetex twarp4-2