def get_partials(frames):
analyzer = loris.Analyzer(0.8 * frequency, frequency)
analyzer.setFreqDrift(0.48 * frequency)
partials = analyzer.analyze(frames, SAMPLE_RATE)
stretch = compute_stretch_factor(partials, frequency)
if (stretch < 0): stretch = 0
# loris.resample(partials, 0.01)
loris.Channelizer(frequency, stretch).channelize(partials)
loris.distill(partials)
return partials
clar = a.analyze( v, samplerate ) print 'checking SDIF export/import' loris.exportSdif( 'clarinet.pytest.sdif', clar ) clar = loris.importSdif( 'clarinet.pytest.sdif' ) try: print 'making a bogus attempt at writing an Spc file' print 'WARNING: this will fail because the Partials are unchannelized' loris.exportSpc( 'bad_spc_file.pytest.spc', clar, 90 ) except: import sys print 'caught:', sys.exc_type, sys.exc_value loris.channelize( clar, loris.createFreqReference( clar, 415*.8, 415*1.2 ), 1 ) loris.distill( clar ) # just for fun, print out the average # frequency of the first partial in the # clarinet analysis: f = 0 n = 0 import sys if float(sys.version[:3]) >= 2.2: p = clar.first() for pos in p: f = f + pos.frequency() n = n + 1 else: p = clar.iterator().next() it = p.iterator()
print 'checking SDIF export/import'
loris.exportSdif('clarinet.pytest.sdif', clar)
clar = loris.importSdif('clarinet.pytest.sdif')
try:
print 'making a bogus attempt at writing an Spc file --'
print 'this will fail because the Partials are unchannelized'
loris.exportSpc('bad_spc_file.pytest.spc', clar, 90)
except:
import sys
print 'caught:', sys.exc_type
print 'error is:', sys.exc_value
print 'OK, moving on!'
loris.channelize(clar, 415)
loris.distill(clar)
# just for fun, print out the average
# frequency of the first partial in the
# clarinet analysis:
f = 0
n = 0
import sys
if float(sys.version[:3]) >= 2.2:
p = clar.first()
for pos in p:
f = f + pos.frequency()
n = n + 1
else:
p = clar.iterator().next()
it = p.iterator()
a = loris.Analyzer( 270 ) # reconfigure Analyzer
a.setFreqDrift( 30 )
file=loris.AiffFile( name+'.aiff' )
v = file.samples()
samplerate=file.sampleRate()
parts = a.analyze( v, samplerate )
# loris.channelize( flut, loris.createFreqReference( flut, 291*.8, 291*1.2, 50 ), 1 )
refenv = a.fundamentalEnv()
loris.channelize( parts, refenv, 1 )
loris.distill( parts )
for part in parts:
print "*****************************************"
it=part.iterator()
while not it.atEnd():
bp=it.next()
print "t:",bp.time(), " a:",bp.amplitude()," bw:",bp.bandwidth()," f:",bp.frequency()," p:",bp.phase()
loris.exportSpc(name+".spc",parts,60)
print "Done"
#path = os.getcwd()