source: python/aubio/aubioclass.py @ 90bcdaa

feature/autosinkfeature/cnnfeature/cnn_orgfeature/constantqfeature/crepefeature/crepe_orgfeature/pitchshiftfeature/pydocstringsfeature/timestretchfix/ffmpeg5pitchshiftsamplertimestretchyinfft+
Last change on this file since 90bcdaa was 08f6688, checked in by Paul Brossier <piem@altern.org>, 18 years ago

fixes dcthreshold
fixes dcthreshold

  • Property mode set to 100644
File size: 5.4 KB
Line 
1from aubiowrapper import *
2
3class fvec:
4    def __init__(self,size,chan):
5        self.vec = new_fvec(size,chan)
6    def __call__(self):
7        return self.vec
8    def __del__(self):
9        del_fvec(self())
10    def get(self,pos,chan):
11        return fvec_read_sample(self(),chan,pos)
12    def set(self,value,pos,chan):
13        return fvec_write_sample(self(),value,chan,pos)
14    def channel(self,chan):
15        return fvec_get_channel(self(),chan)
16    def data(self):
17        return fvec_get_data(self())
18
19class cvec:
20    def __init__(self,size,chan):
21        self.vec = new_cvec(size,chan)
22    def __call__(self):
23        return self.vec
24    def __del__(self):
25        del_cvec(self())
26    def get(self,pos,chan):
27        return self.get_norm(pos,chan)
28    def set(self,val,pos,chan):
29        self.set_norm(val,chan,pos)
30    def get_norm(self,pos,chan):
31        return cvec_read_norm(self(),chan,pos)
32    def set_norm(self,val,pos,chan):
33        cvec_write_norm(self(),val,chan,pos)
34    def get_phas(self,pos,chan):
35        return cvec_read_phas(self(),chan,pos)
36    def set_phas(self,val,pos,chan):
37        cvec_write_phas(self(),val,chan,pos)
38
39class sndfile:
40    def __init__(self,filename,model=None):
41        if (model!=None):
42            self.file = new_aubio_sndfile_wo(model.file,filename)
43        else:
44            self.file = new_aubio_sndfile_ro(filename)
45    def __del__(self):
46        del_aubio_sndfile(self.file)
47    def info(self):
48        aubio_sndfile_info(self.file)
49    def samplerate(self):
50        return aubio_sndfile_samplerate(self.file)
51    def channels(self):
52        return aubio_sndfile_channels(self.file)
53    def read(self,nfram,vecread):
54        return aubio_sndfile_read(self.file,nfram,vecread())
55    def write(self,nfram,vecwrite):
56        return aubio_sndfile_write(self.file,nfram,vecwrite())
57
58class pvoc:
59    def __init__(self,buf,hop,chan):
60        self.pv = new_aubio_pvoc(buf,hop,chan)
61    def __del__(self):
62        del_aubio_pvoc(self.pv)
63    def do(self,tf,tc):
64        aubio_pvoc_do(self.pv,tf(),tc())
65    def rdo(self,tc,tf):
66        aubio_pvoc_rdo(self.pv,tc(),tf())
67
68class onsetdetection:
69    """ class for aubio_onsetdetection """
70    def __init__(self,type,buf,chan):
71        self.od = new_aubio_onsetdetection(type,buf,chan)
72    def do(self,tc,tf):
73        aubio_onsetdetection(self.od,tc(),tf())
74    def __del__(self):
75        aubio_onsetdetection_free(self.od)
76
77class peakpick:
78    """ class for aubio_peakpicker """
79    def __init__(self,threshold=0.1):
80        self.pp = new_aubio_peakpicker(threshold)
81    def do(self,fv):
82        return aubio_peakpick_pimrt(fv(),self.pp)
83    def getval(self):
84        return aubio_peakpick_pimrt_getval(self.pp)
85    def __del__(self):
86        del_aubio_peakpicker(self.pp)
87
88class onsetpick:
89    """ superclass for aubio_pvoc + aubio_onsetdetection + aubio_peakpicker """
90    def __init__(self,bufsize,hopsize,channels,myvec,threshold,mode='dual',derivate=False,dcthreshold=0):
91        self.myfft    = cvec(bufsize,channels)
92        self.pv       = pvoc(bufsize,hopsize,channels)
93        if mode in ['dual'] :
94                self.myod     = onsetdetection(aubio_onset_hfc,bufsize,channels)
95                self.myod2    = onsetdetection(aubio_onset_mkl,bufsize,channels)
96                self.myonset  = fvec(1,channels)
97                self.myonset2 = fvec(1,channels)
98        else: 
99                self.myod     = onsetdetection(mode,bufsize,channels)
100                self.myonset  = fvec(1,channels)
101        self.mode     = mode
102        self.pp       = peakpick(float(threshold))
103        self.derivate = derivate
104        self.dcthreshold = dcthreshold
105        self.oldval   = 0.
106
107    def do(self,myvec): 
108        self.pv.do(myvec,self.myfft)
109        self.myod.do(self.myfft,self.myonset)
110        if self.mode == 'dual':
111           self.myod2.do(self.myfft,self.myonset2)
112           self.myonset.set(self.myonset.get(0,0)*self.myonset2.get(0,0),0,0)
113        if self.derivate:
114           val         = self.myonset.get(0,0)
115           dval        = val - self.oldval
116           self.oldval = val
117           if dval > 0: self.myonset.set(dval,0,0)
118           else:  self.myonset.set(0.,0,0)
119        isonset, dval = self.pp.do(self.myonset),self.myonset.get(0,0)
120        if self.dcthreshold:
121           if dval < self.dcthreshold: isonset = 0 
122        return isonset, dval
123
124class pitchdetection:
125    def __init__(self,mode=aubio_pitch_mcomb,bufsize=2048,hopsize=1024,
126        channels=1,samplerate=44100.,omode=aubio_pitchm_freq,yinthresh=0.1):
127        self.pitchp = new_aubio_pitchdetection(bufsize,hopsize,channels,
128                samplerate,mode,omode)
129        aubio_pitchdetection_set_yinthresh(self.pitchp,yinthresh)
130        #self.filt     = filter(srate,"adsgn")
131    def __del__(self):
132        del_aubio_pitchdetection(self.pitchp)
133    def __call__(self,myvec): 
134        #self.filt(myvec)
135        return aubio_pitchdetection(self.pitchp,myvec())
136
137class filter:
138    def __init__(self,srate,type=None):
139        if (type=="adsgn"):
140            self.filter = new_aubio_adsgn_filter(srate)
141    def __del__(self):
142        #del_aubio_filter(self.filter)
143        pass
144    def __call__(self,myvec):
145        aubio_filter_do(self.filter,myvec())
146
147class beattracking:
148    """ class for aubio_beattracking """
149    def __init__(self,winlen,channels):
150        self.p = new_aubio_beattracking(winlen,channels)
151    def do(self,dfframe,out):
152        return aubio_beattracking_do(self.p,dfframe(),out())
153    def __del__(self):
154        del_aubio_beattracking(self.p)
155
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