Implicit Neural Representations (INRs) are nowadays used to represent multimedia signals across various real-life applications, including image super-resolution, image compression, or 3D rendering. Existing methods that leverage INRs are predominantly focused on visual data, as their application to other modalities, such as audio, is nontrivial due to the inductive biases present in architectural attributes of image-based INR models. To address this limitation, we introduce HyperSound, the first meta-learning approach to produce INRs for audio samples that leverages hypernetworks to generalize beyond samples observed in training. Our approach reconstructs audio samples with quality comparable to other state-of-the-art models and provides a viable alternative to contemporary sound representations used in deep neural networks for audio processing, such as spectrograms.

翻译：隐式神经表征（Implicit Neural Representations, INRs）如今被用于多种实际应用中的多媒体信号表征，包括图像超分辨率、图像压缩或三维渲染。现有利用INRs的方法主要集中于视觉数据，因其应用于音频等其他模态时，由于基于图像的INR模型架构属性中存在的归纳偏置，导致处理并非易事。为解决这一局限，我们引入了HyperSound——首个利用超网络为音频样本生成INRs的元学习方法，该方法能够泛化到训练中未观测到的样本。我们的方法以与其它最先进模型相当的质量重建音频样本，并为深度神经网络音频处理中使用的当代声音表征（如频谱图）提供了可行的替代方案。