Distortion Analysis Toolkit - a Software Tool for Easy Analysis of Nonlinear Audio Systems

Jyri Pakarinen

    Research output: Contribution to journalArticleScientificpeer-review

    6 Citations (Scopus)
    174 Downloads (Pure)


    Several audio effects devices deliberately add nonlinear distortion to the processed signal in order to create a desired sound. When creating virtual analog models of nonlinearly distorting devices, it would be very useful to carefully analyze the type of distortion, so that the model could be made as realistic as possible. While traditional system analysis tools such as the frequency response give detailed information on the operation of linear and time-invariant systems, they are less useful for analyzing nonlinear devices. Furthermore, although there do exist separate algorithms for nonlinear distortion analysis, there is currently no unified, easy-to-use tool for rapid analysis of distorting audio systems. This paper offers a remedy by introducing a new software tool for easy analysis of distorting effects. A comparison between a well-known guitar tube amplifier and two commercial software simulations is presented as a case study. This freely available software is written in Matlab language, but the analysis tool can also run as a standalone program, so the user does not need to have Matlab installed in order to perform the analysis.
    Original languageEnglish
    Article number617325
    Pages (from-to)1-13
    JournalEurasip Journal on Advances in Signal Processing
    Publication statusPublished - 2010
    MoE publication typeA1 Journal article-refereed


    • Article ID 617325. doi: 10.1155/2010/617325. Special Issue on Digital Audio Effects


    Dive into the research topics of 'Distortion Analysis Toolkit - a Software Tool for Easy Analysis of Nonlinear Audio Systems'. Together they form a unique fingerprint.

    Cite this