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Generates a window function that can be used in inverse_stft.

Constructs a window that is equal to the forward window with a further pointwise amplitude correction. inverse_stft_window_fn is equivalent to forward_window_fn in the case where it would produce an exact inverse.

See examples in inverse_stft documentation for usage.

frame_step An integer scalar Tensor. The number of samples to step.
forward_window_fn window_fn used in the forward transform, stft.
name An optional name for the operation.

A callable that takes a window length and a dtype keyword argument and returns a [window_length] Tensor of samples in the provided datatype. The returned window is suitable for reconstructing original waveform in inverse_stft.