Simulation of Digital Audio Compression
نویسندگان
چکیده
This paper presents the digital data compression of multimedia transmission system. Digital audio compression is a scheme, which allows efficient storage and transmission of audio data. The main objective of this research is to show the program in MATLAB for Moving Pictures Expert Group (MPEG-1) audio encoder and decoder for layer-1, which will be analyzed in future on Digital Signal Processing (DSP) in real time. This work is constrained to the time-consuming sections of the MPEG-1 Layer-1 audio standard. Compression is required for efficient transmission in order to send more data in the available bandwidth, or to send the same data in less bandwidth and more users can use it on the same bandwidth. It can also be used for storage purposes to compress more data and can compress for local storage, put details on cheaper media. It is also useful for progressive reconstruction, scalable delivery, browsing and as a front end to other signal processing. Key-Words: Compression, MATALB, MPEG-1, Digital audio, Simulation
منابع مشابه
MPEG-1 AND MPEG-2 Video Standards
The development of digital video technology in the 1980s has made it possible to use digital video compression in various kinds of applications. The effort to develop standards for coded representation of moving pictures, audio, and their combination is carried out in the Moving Picture Experts Group (MPEG). MPEG is a group formed under the auspices of the International Organization for Standar...
متن کاملDigital Audio Compression
Compared to most digital data types, with the exception of digital video, the data rates associated with uncompressed digital audio are substantial. Digital audio compression enables more efficient storage and transmission of audio data. The many forms of audio compression techniques offer a range of encoder and decoder complexity, compressed audio quality, and differing amounts of data compres...
متن کاملStirMark Benchmark: audio watermarking attacks based on lossy compression
StirMark Benchmark is a well-known evaluation tool for watermarking robustness. Additional attacks are added to it continuously. To enable application based evaluation, in our paper we address attacks against audio watermarks based on lossy audio compression algorithms to be included in the test environment. We discuss the effect of different lossy compression algorithms like MPEG-2 audio Layer...
متن کاملOn-line Simulation Modules for Teaching Speech and Audio Compression Techniques
1 The authors are with the Electrical Engineering Department, MIDL lab, Arizona state university, Tempe, AZ, Email: [email protected], [email protected] Abstract In this paper, we present a collection of software educational tools for introducing speech and audio compression (or coding) techniques to undergraduate and graduate students. These speech processing tools enable online simulations of spee...
متن کاملDigital Audio Watermarking Using DWT-SVD and Secret Sharing
This paper describes an audio watermarking method where a copyright information is imperceptibly added into the audio signal. The copyright information or watermark could be a binary logo or some unique binary pattern. In this paper we borrowed a cryptographic technique method known as secret sharing method. The secret sharing method along with discrete wavelet transform (DWT) and singular valu...
متن کامل