QMF的音标

The principle and design process of the Quadrature Mirror Filter ( QMF) in 16 kbit/ s SB& PC speech compression coding system are discussed. The hardware and software structures for implementing QMF to split band are also given in the paper.

本文讨论了16kbit/s分带自适应（SB&APC）预测语音压缩编码系统中的正交镜象滤波器（QMF）的原理和设计过程，并给出了实现QMF的硬件和软件结构。

Based on this two channel perfect reconstruction QMF can be designed with higher reconstruction accuracy, whose power complementary is 10~ (-8) dB, while that of the traditional method is only 10~ (-3) dB.

实验证明，由此得到的二通道完全重建QMF组的功率互补对数幅频特性可达10~（-8）dB，而传统方法仅能达到10~（-3）dB，具有很高的重建精度。

Quadrature mirror filters ( QMF) are often used in sub-band coding to eliminate aliasing between sub-bands.

子带编码中，广泛采用正交镜像滤波器（QMF）消除各子带谱的混叠。