textgridview.py 文件源码

def _get_spectrogram(self, **kwargs):
        NFFT = int(self.sound().framerate * self.windowLength())
        noverlap = kwargs.get("noverlap", int(NFFT / 2))
        data, ybins, xbins, im = self.ax_spectrogram.specgram(
            self.sound().astype(np.int32),
            NFFT=NFFT,
            Fs=self.sound().framerate,
            noverlap=noverlap,
            window=signal.gaussian(M=NFFT, std=noverlap))
        self._extent = [xbins.min(), xbins.max(), ybins.min(), ybins.max()]
        self._spectrogram = self.transform(data)