keras/src/ops/math.py/ISTFT/call
class ISTFT:    def call(self, x):
        return backend.math.istft(
            x,
            sequence_length=self.sequence_length,
            sequence_stride=self.sequence_stride,
            fft_length=self.fft_length,
            length=self.length,
            window=self.window,
            center=self.center,
        )