from aubio.aubioclass import *
import sys
+bufsize = 512
+hopsize = bufsize/2
+
def getonsets(filein,threshold):
- bufsize = 1024
- hopsize = bufsize/2
frameread = 0
filei = sndfile(filein)
srate = filei.samplerate()
#newname = "%s%.8f%s" % ("/tmp/",0.0000000,filein[-4:])
#fileo = sndfile(newname,model=filei)
mylist = list()
+ ovalist = [0., 0., 0., 0., 0., 0.]
while(readsize==hopsize):
readsize = filei.read(hopsize,myvec)
isonset,val = opick.do(myvec)
+ ovalist.append(val)
+ ovalist.pop(0)
if (isonset == 1):
- now = (frameread-4)*hopsize/(srate+0.)
- #del fileo
- #fileo = sndfile("%s%f%s" % ("/tmp/",now,filein[-4:]),model=filei)
- mylist.append(now)
+ i=len(ovalist)-1
+ # find local minima
+ while ovalist[i-1] < ovalist[i] and i > 0:
+ i -= 1
+ now = (frameread+1-i)*hopsize/(srate+0.)
+ #del fileo
+ #fileo = sndfile("%s%f%s" % ("/tmp/",now,filein[-4:]),model=filei)
+ mylist.append(now)
#writesize = fileo.write(readsize,myoldvec)
frameread += 1
return mylist
def cutfile(filein,onsets):
- hopsize = 512
frameread = 0
readsize = hopsize
filei = sndfile(filein)
newname = "%s%f%s" % ("/tmp/",0.0000000,filein[-4:])
fileo = sndfile(newname,model=filei)
myvec = fvec(hopsize,channels)
+ mycopy = fvec(hopsize,channels)
while(readsize==hopsize):
readsize = filei.read(hopsize,myvec)
now = (frameread)*hopsize/(srate+0.)
- writesize = fileo.write(readsize,myvec)
- if len(onsets) and now == onsets[0]:
+ # write to current file
+ if len(onsets) and now >= onsets[0]:
onsets.pop(0)
+ # write up to 1st zero crossing
+ zerocross = 0
+ while ( abs( myvec.get(zerocross,0) ) > 0.002 ):
+ zerocross += 1
+ writesize = fileo.write(zerocross,myvec)
+ fromcross = 0
+ while (zerocross < readsize):
+ mycopy.set(myvec.get(zerocross,0),fromcross,0)
+ fromcross += 1
+ zerocross += 1
del fileo
- fileo = sndfile("%s%f%s%s" % ("/tmp/",now,".",filein.split(".")[-1]),model=filei)
+ fileo = sndfile("%s%s%f%s%s" %
+ (filein.split(".")[0].split("/")[-1],".",now,".",filein.split(".")[-1]),model=filei)
+ # write after 1st zero crossing to new file
+ writesize = fileo.write(fromcross,mycopy)
+ else:
+ writesize = fileo.write(readsize,myvec)
frameread += 1
del fileo