Effective Audio Compression using Enhanced Encoding Method

Abstract

The rapid growth of big data and the emergence of new technologies have posed significant challenges in data compression, particularly in the domain of audio compression. Audio compression has gained widespread applications in advanced audio coding, MP3 encoding, web radio, and lossless audio coding techniques. In this paper, a newly proposed technique is present aimed at improving audio compression. The proposed technique consists of two main stages: preprocessing and the application of compression techniques. The preprocessing stage involves several steps. Firstly, the raw audio data is subjected to set normalization to ensure consistent scaling. Next, the data is divided into smaller segments to facilitate the application of Discrete Cosine Transform (DCT) and quantization on each segment. The quantization parameter is determined based on the bit per sample of the audio test file and the number of channels. To implement the Modified MLZW compression technique, the data is converted into byte values, and a word reference is constructed based on these bytes. To evaluate the performance of the proposed technique, multiple audio files have been utilized in experimental tests. The results demonstrate that the proposed technique achieves smaller MSE of 2.05*10-10 and significant improvements in terms of compression efficiency with reduction in processing time to 200 ms. The proposed methods works better and ensure that the audio quality is good and the system can be used for transmitting audio over different media that depend on lossy audio compression.

Keywords

• Audio data, Audio signal processing, DCT8, Audio sample, Compression, Audio coding