Lossless audio compression using modular arithmetic and performance-based adaptation

During the last decade, storage of audio data without losses gained on its importance due to increased necessities for high-quality audio reproduction. The second reason can be found in implementation of systems such as speech recognition which can benefit from lossless data. This paper introduces lossless audio compression algorithm based on modular arithmetic and performance based adaptation. The proposed algorithm can compress audio data in simple mode without adaptation which requires less computation, or with adaptation which is more computationally demanding but has better performance. Comparison of the proposed algorithm with available lossless audio codecs, according to compression ratio, is made on two sets of data. The first set includes various music tracks and the second set is collection of speech recordings.