tags.py 文件源码

def inverse(self, encoded, duration=None):
        '''Inverse transformation'''

        ann = jams.Annotation(namespace=self.namespace, duration=duration)
        for start, end, value in self.decode_intervals(encoded,
                                                       duration=duration):
            # Map start:end to frames
            f_start, f_end = time_to_frames([start, end],
                                            sr=self.sr,
                                            hop_length=self.hop_length)

            confidence = np.mean(encoded[f_start:f_end+1, value])

            value_dec = self.encoder.inverse_transform(np.atleast_2d(value))[0]

            for vd in value_dec:
                ann.append(time=start,
                           duration=end-start,
                           value=vd,
                           confidence=confidence)

        return ann