Advanced techniques on multirate signal processing for digital information processing [Editorial]

Multirate signal processing has become a key topic enabling efficient techniques for digital information processing in a variety of applications such as digital transceivers s for wireless as well as satellite communication systems, digital broadcasting, high performance audio and video, multimedia services, and signal compression. In the wireless communications arena, multirate signal processing techniques provide effective means to implement flexible receiver channelisation filtering and sampling rate conversion for software and cognitive radio digital frontends. As far as multimedia signal processing is concerned, recent techniques relying on multirate filter banks have resulted in improved subband coding techniques reflected in the JPEG-2000 multimedia standard, as well as on some modern audio compression formats such as MP3, AAC3 and ATRAC3plus, to cite but a few.