A Configurable Common Filterbank Processor for Multi-Standard Audio Decoder(Digital Signal Processing)

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概要

• 論文の詳細を見る

• Audio applications for mobile phone and portable devices are increasingly popular. To attract consumer interest, a multi-standard design on a single device is the trend of current audio decoder development. This paper presents a configurable common filterbank processor (CCFP) for AC-3, MP3 and AAC audio decoder. It is used as an accelerator for general purpose processors to improve performance. All the filterbank transforms are derived to even- or odd-point IFFT flows. In the architecture, a fully pipelined approach is developed which can be configured for different operation modes. This design is synthesized using UMC 0.18μm library and takes about 26.7K gates. By the fast algorithm and fully pipelined architecture, the operation cycles are greatly reduced. Therefore, it can be executed at a very low operation frequency with the range of 1.3 to 3.6MHz. Besides, the power consumption is only 0.9mW, 3.2mW and 1mW for AC-3, MP3 and AAC respectively. We further port our design on an ARM Integrator platform to make a real play system. On average, over 50% ARM performance loading can be saved and used for handling other applications.

• 社団法人電子情報通信学会の論文
• 2007-09-01

著者

• TSAI Tsung-Han

  Department of Electrical Engineering, National Central University

• Liu Chun-nan

  Department Of Electrical Engineering National Central University

• Tsai Tsung-han

  Institute Of Microelectronics Department Of Electrical Engineering National Cheng-kung University

• Tsai Tsung-han

  Department Of Electrical Engineering National Central University

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