fft.py 文件源码

def istft(spec, overlap=4):
    assert (spec.shape[0] > 1)
    S = placeholder(dtype=tf.complex64, shape=spec.shape)
    X = tf.complex_abs(tf.concat(0, [tf.ifft(frame) \
            for frame in tf.unstack(S)]))
    sess = tf.Session()
    return sess.run(X, feed_dict={S:spec})