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real fast convolution filtering works mostly, sometimes it does not

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make all the samples ( obeserved with ./fastfir.py -n 1024 -r -l 100000 )
This commit is contained in:
Mark Borgerding
2004-01-01 18:51:17 +00:00
parent 0243552944
commit e749a114cb
4 changed files with 113 additions and 65 deletions
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10
test/Makefile
View File

@ -16,6 +16,7 @@ TESTREAL=tr_$(DATATYPE)
TESTKFC=tkfc_$(DATATYPE)
FFTUTIL=kf_$(DATATYPE)
FASTFILT=ff_$(DATATYPE)
FASTFILTREAL=ffr_$(DATATYPE)
ifeq "$(DATATYPE)" "short"
TYPEFLAGS=-DFIXED_POINT -Dkiss_fft_scalar=short
@ -34,14 +35,17 @@ endif
all: $(BENCHKISS) $(SELFTEST) $(BENCHFFTW) $(TESTREAL) $(FFTUTIL) \
$(TESTKFC) $(FASTFILT)
$(TESTKFC) $(FASTFILT) $(FASTFILTREAL)
CFLAGS=-Wall -O3 -pedantic -march=pentiumpro -ffast-math -fomit-frame-pointer
#-DUSE_SKIP
# If the above flags do not work, try the following
#CFLAGS=-Wall -O3
$(FASTFILT): ../kiss_fft.c kiss_fastfir.c kiss_fftr.c
$(FASTFILTREAL): ../kiss_fft.c kiss_fastfir.c kiss_fftr.c
$(CC) -o $@ $(CFLAGS) -I.. $(TYPEFLAGS) -DREAL_FASTFIR -lm $+ -DFAST_FILT_UTIL
$(FASTFILT): ../kiss_fft.c kiss_fastfir.c
$(CC) -o $@ $(CFLAGS) -I.. $(TYPEFLAGS) -lm $+ -DFAST_FILT_UTIL
$(FFTUTIL): ../kiss_fft.c fftutil.c kiss_fftnd.c kiss_fftr.c
@ -83,4 +87,4 @@ selftest_short.c:
./mk_test.py -s 10 12 14 > selftest_short.c
clean:
rm -f *~ bm_* st_* tr_* kf_* tkfc_*
rm -f *~ bm_* st_* tr_* kf_* tkfc_* ff_* *.pyc *.pyo

31
test/fastfir.py
View File

@ -44,21 +44,32 @@ def fastfilter(sig,h,nfft=None):
return concatenate( res )
def main():
siglen = 1e4
import sys
from getopt import getopt
opts,args = getopt(sys.argv[1:],'rn:l:')
opts=dict(opts)
siglen = int(opts.get('-l',1e4 ) )
hlen = 50
nfft = 128
nfft = int(opts.get('-n',128) )
usereal = opts.has_key('-r')
print 'nfft=%d'%nfft
# make a signal
sig = make_random( siglen )
# make an impulse response
h = make_random( hlen )
#h=[1]*2+[0]*3
if usereal:
sig=[c.real for c in sig]
h=[c.real for c in h]
# perform MAC filtering
yslow = slowfilter(sig,h)
#print '<YSLOW>',yslow,'</YSLOW>'
#yfast = fastfilter(sig,h,nfft)
yfast = utilfastfilter(sig,h,nfft)
yfast = utilfastfilter(sig,h,nfft,usereal)
#print yfast
print 'len(yslow)=%d'%len(yslow)
print 'len(yfast)=%d'%len(yfast)
@ -69,16 +80,20 @@ def main():
print yslow[:5]
print yfast[:5]
def utilfastfilter(sig,h,nfft):
def utilfastfilter(sig,h,nfft,usereal):
import compfft
import os
open( 'sig.dat','w').write( compfft.dopack(sig,'f',1) )
open( 'h.dat','w').write( compfft.dopack(h,'f',1) )
cmd = './ff_float -n %d -i sig.dat -h h.dat -o out.dat' % nfft
open( 'sig.dat','w').write( compfft.dopack(sig,'f',not usereal) )
open( 'h.dat','w').write( compfft.dopack(h,'f',not usereal) )
if usereal:
util = './ffr_float'
else:
util = './ff_float'
cmd = 'time %s -n %d -i sig.dat -h h.dat -o out.dat' % (util, nfft)
print cmd
ec = os.system(cmd)
print 'exited->',ec
return compfft.dounpack(open('out.dat').read(),'f',1)
return compfft.dounpack(open('out.dat').read(),'f',not usereal)
if __name__ == "__main__":
main()