Fast Huffman encoding algorithms in MPEG-4 advanced audio coding

2014 ◽  
Author(s):  
Grzegorz Brzuchalski
Keyword(s):  
Audio Coding ◽  
Huffman Encoding ◽  
Advanced Audio Coding

scholarly journals Improved high-quality MPEG-2/4 advanced audio coding encoder

2008 ◽  
Vol 29 (6) ◽  
pp. 362-371
Author(s):  
Yotaro Kubo ◽  
Masaaki Honda ◽  
Katsuhiko Shirai ◽  
Tomoyasu Komori ◽  
Nobumasa Seiyama ◽  
...  
Keyword(s):  
Audio Coding ◽  
High Quality ◽  
Advanced Audio Coding

Investigation of Lossless Audio Compression using IEEE 1857.2 Advanced Audio Coding

2017 ◽  
Vol 6 (2) ◽  
pp. 422
Author(s):  
Teddy Surya Gunawan ◽  
Muhammad Khalif Mat Zain ◽  
Fathiah Abdul Muin ◽  
Mira Kartiwi
Keyword(s):  
Lossless Compression ◽  
Audio Coding ◽  
Audio Compression ◽  
Source File ◽  
Compression Performance ◽  
Audio Quality ◽  
Current State ◽  
Ieee Standard ◽  
Audio Files ◽  
Advanced Audio Coding

<p>Audio compression is a method of reducing the space demand and aid transmission of the source file which then can be categorized by lossy and lossless compression. Lossless audio compression was considered to be a luxury previously due to the limited storage space. However, as storage technology progresses, lossless audio files can be seen as the only plausible choice for those seeking the ultimate audio quality experience. There are a lot of commonly used lossless codecs are FLAC, Wavpack, ALAC, Monkey Audio, True Audio, etc. The IEEE Standard for Advanced Audio Coding (IEEE 1857.2) is a new standard approved by IEEE in 2013 that covers both lossy and lossless audio compression tools. A lot of research has been done on this standard, but this paper will focus more on whether the IEEE 1857.2 lossless audio codec to be a viable alternative to other existing codecs in its current state. Therefore, the objective of this paper is to investigate the codec’s operation as initial measurements performed by researchers show that the lossless compression performance of the IEEE compressor is better than any traditional encoders, while the encoding speed is slower which can be further optimized.</p>

Design and Implementation of KASUMI Algorithm in ISMACryp Encryption for Video Content Protection in DVB-H Application

2011 ◽  
Vol 403-408 ◽  
pp. 3847-3853 ◽  
Author(s):  
Jay M. Joshi ◽  
Kiran R. Parmar ◽  
Upena D. Dalal
Keyword(s):  
Structural Data ◽  
Audio Coding ◽  
Handheld Devices ◽  
Video Content ◽  
Content Protection ◽  
Digital Video Broadcasting ◽  
Video Broadcasting ◽  
Encryption And Authentication ◽  
Advanced Audio Coding ◽  
Rijndael Algorithm

Three technologies can be used for content protection in DVB-H; IPSec, SRTP and ISMACryp. ISMA Encryption and Authentication is one of the three chosen technologies for service protection in DVB-H (Digital Video Broadcasting - Handheld), the TV system for portable handheld devices. This paper deals with modification in ISMACryp. The ISMACryp is encoded with MPEG-4 video and MPEG-4 AAC (advanced audio coding), while leaving all structural data as it is. Two modes of ISMACryp are available; the CTR mode (Counter type) and CBC mode (Cipher Block Chaining) mode. Both modes of ISMACryp is based on 128-bit AES algorithm. AES algorithms are more complex and require larger time with more clock cycles for execution. This paper is being first simulate and implement existing ISMACryp using 128-bit Rijndael algorithm and then modified it with KASUMI algorithm that will be provided lower number of clock pulses with lower execution time. The simulation is done in Matlab and implementation in TMS320C6713 DSP kit.

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