Phase Shuffle

2000년 도입 · 논문 30편에서 사용

Phase Shuffle is a technique for removing pitched noise artifacts that come from using transposed convolutions in audio generation models. Phase shuffle is an operation with hyperparameter $n$. It randomly perturbs the phase of each layer’s activations by −$n$ to $n$ samples before input to the next layer. In the original application in WaveGAN, the authors only apply phase shuffle to the discriminator, as the latent vector already provides the generator a mechanism to manipulate the phase of a resultant waveform. Intuitively speaking, phase shuffle makes the discriminator’s job more challenging by requiring invariance to the phase of the input waveform.

출처: Adversarial Audio Synthesis

소개 논문: Adversarial Audio Synthesis