Feedback Amplitude Modulation Synthesis

Jari Kleimola, Victor Lazzarini, Vesa Välimäki, Joseph Timoney

Research output: Contribution to journalArticleScientificpeer-review

15 Citations (Scopus)
212 Downloads (Pure)


A recently rediscovered sound synthesis method, which is based on feedback amplitude modulation (FBAM), is investigated. The FBAM system is interpreted as a periodically linear time-varying digital filter, and its stability, aliasing, and scaling properties are considered. Several novel variations of the basic system are derived and analyzed. Separation of the input and the modulation signals in FBAM structures is proposed which helps to create modular sound synthesis and digital audio effects applications. The FBAM is shown to be a powerful and versatile sound synthesis principle, which has similarities to the established distortion synthesis methods, but which is also essentially different from them.
Original languageEnglish
Article number434378
Pages (from-to)1-18
JournalEurasip Journal on Advances in Signal Processing
Publication statusPublished - 2011
MoE publication typeA1 Journal article-refereed


  • acoustic signal processin
  • audio oscillators
  • music
  • nonlinear systems
  • signal synthesis
  • time-varying filters


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