標題: Bit allocation method for AC-3 encoder
作者: Liu, CM
Lee, SW
Lee, WC
資訊工程學系
Department of Computer Science
公開日期: 1-八月-1998
摘要: Dolby AC-3 is an audio coder selected in the United State high definition television (HDTV) standards and widely adopted for the audio codec in DVD films. For audio coder, the complexity of the audio encoders is always higher than that of the decoders. A main module leading to the higher complexity is the bit allocation process. The objective of the bit allocation is to allocate restricted bits to encoded information. Since that AC-3 coder has adopted a floating point representation which the magnitude of each spectral line is represented with an exponent and a mantissa, the bit allocation process not only has to decide the suitable quantization method for the mantissa similar to the process in other coding standards such as MPEG1, but also the exponent strategies and hence the parameters in psychoacoustic models. This coding process has been referred to as a hybrid coding [5] and has led to immense complexity for an encoder. This paper proposes an efficient method for the bit allocation process.
URI: http://dx.doi.org/10.1109/30.713209
http://hdl.handle.net/11536/32466
ISSN: 0098-3063
DOI: 10.1109/30.713209
期刊: IEEE TRANSACTIONS ON CONSUMER ELECTRONICS
Volume: 44
Issue: 3
起始頁: 883
結束頁: 887
顯示於類別:期刊論文


文件中的檔案:

  1. 000075975100057.pdf