This paper proposes the realization of perceptual wavelet approximation of Bark scale using a linear-phase integer decimated non-uniform filter bank (IDNUFB), designed by merging the channels of a partially cosine-modulated uniform filter bank. In effect, the channels with different sampling factors of the IDNUFB can be derived from the same prototype filter using the proposed method of design. Also, the proposed IDNUFB is employed for the realization of Bark frequency partitioning. The proposed method of IDNUFB design using PCM and merging is found to have linear-phase property and reduced hardware complexity, when compared to the existing filter bank-based methods for Bark frequency partitioning.

中文翻译：

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设计低复杂度线性相位非均匀滤波器组以实现实时应用的巴克频率划分的小波逼近

本文提出了使用线性相位整数抽取非均匀滤波器组 (IDNUFB) 实现巴克尺度的感知小波近似，该滤波器组通过合并部分余弦调制均匀滤波器组的通道而设计。实际上，IDNUFB 具有不同采样因子的通道可以使用所提出的设计方法从相同的原型滤波器导出。此外，提出的 IDNUFB 用于实现 Bark 频率划分。与现有的基于滤波器组的 Bark 频率划分方法相比，所提出的使用 PCM 和合并的 IDNUFB 设计方法具有线性相位特性并降低了硬件复杂性。