Audio signal dynamics expansion

Abstract

Currently, audio recordings are usually edited in order their dynamic range was decreased. Such signal processing brings several advantages. When applied, the recordings sound more loudly even on cheap and weak reproducing devices. The compressed recordings act compactly and can also be listened in noisy environment. On the other hand, too much compression makes the recording contrived. Therefore the authors of this paper decided to create a software-based audio signal dynamics expander and, after gaining the experience, to discuss further approach to the audio signal dynamics expansion. Both issues are described in this paper.