Changeset 80c0417 for python/aubio/aubioclass.py

Timestamp:

May 30, 2005, 6:44:52 AM (19 years ago)

Author:

Paul Brossier <piem@altern.org>

Branches:

feature/autosink, feature/cnn, feature/cnn_org, feature/constantq, feature/crepe, feature/crepe_org, feature/pitchshift, feature/pydocstrings, feature/timestretch, fix/ffmpeg5, master, pitchshift, sampler, timestretch, yinfft+

Children:

d09cad2

Parents:

588a09f

Message:

merged aubioplot-onsets into aubiocut, added some more options

File:

• python/aubio/aubioclass.py (modified) (7 diffs)

python/aubio/aubioclass.py

@@ -74 +74 @@
 class onsetpick:
     """ superclass for aubio_pvoc + aubio_onsetdetection + aubio_peakpicker """
-    def __init__(self,bufsize,hopsize,channels,myvec,threshold,mode='dual'):
+    def __init__(self,bufsize,hopsize,channels,myvec,threshold,mode='dual',derivate=False):
         self.myfft    = cvec(bufsize,channels)
         self.pv       = pvoc(bufsize,hopsize,channels)
@@ -87 +87 @@
         self.mode     = mode
         self.pp       = peakpick(float(threshold))
+        self.derivate = derivate
+        self.oldval   = 0.
 
     def do(self,myvec): 
@@ -94 +96 @@
                 self.myod2.do(self.myfft,self.myonset2)
                 self.myonset.set(self.myonset.get(0,0)*self.myonset2.get(0,0),0,0)
+        if self.derivate:
+                val         = self.myonset.get(0,0)
+                dval        = val - self.oldval
+                self.oldval = val
+                if dval > 0: self.myonset.set(dval,0,0)
+                else:  self.myonset.set(0.,0,0)
         return self.pp.do(self.myonset),self.myonset.get(0,0)
 
-def getonsets(filein,threshold=0.2,silence=-70.,bufsize=1024,hopsize=512,mode='dual',localmin=False,storefunc=False):
+def getonsets(filein,threshold=0.2,silence=-70.,bufsize=1024,hopsize=512,
+                mode='dual',localmin=False,storefunc=False,derivate=False):
         frameread = 0
         filei     = sndfile(filein)
@@ -102 +111 @@
         myvec     = fvec(hopsize,channels)
         readsize  = filei.read(hopsize,myvec)
-        opick     = onsetpick(bufsize,hopsize,channels,myvec,threshold,mode=mode)
+        opick     = onsetpick(bufsize,hopsize,channels,myvec,threshold,
+                         mode=mode,derivate=derivate)
         mylist    = list()
         if localmin:
@@ -114 +124 @@
                         isonset=0
                 if localmin:
-                        ovalist.append(val)
+                        if val > 0: ovalist.append(val)
+                        else: ovalist.append(0)
                         ovalist.pop(0)
                 if storefunc:
@@ -136 +147 @@
         else: return mylist
 
-def cutfile(filein,slicetimes,zerothres=0.002,bufsize=1024,hopsize=512):
+def cutfile(filein,slicetimes,zerothres=0.008,bufsize=1024,hopsize=512):
     frameread = 0
     readsize  = hopsize 
@@ -154 +165 @@
             zerocross = 0
             while ( abs( myvec.get(zerocross,0) ) > zerothres ):
-                zerocross += 1
+                zerocross += 1
             writesize = fileo.write(zerocross,myvec)
             fromcross = 0
             while (zerocross < readsize):
-                for i in range(channels):
-                        mycopy.set(myvec.get(zerocross,i),fromcross,i)
-                fromcross += 1
-                zerocross += 1
+                for i in range(channels):
+                    mycopy.set(myvec.get(zerocross,i),fromcross,i)
+                    fromcross += 1
+                    zerocross += 1
             del fileo
             fileo = sndfile("%s%s%f%s%s" % 
-                (filein.split(".")[0].split("/")[-1],".",
-                frameread*framestep,".",filein.split(".")[-1]),model=filei)
+                (filein.split(".")[0].split("/")[-1],".",
+                frameread*framestep,".",filein.split(".")[-1]),model=filei)
             writesize = fileo.write(fromcross,mycopy)
         else: