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  • Research Article
  • Open Access

Real-Time Guitar Preamp Simulation Using Modified Blockwise Method and Approximations

EURASIP Journal on Advances in Signal Processing20112011:629309

https://doi.org/10.1155/2011/629309

  • Received: 14 September 2010
  • Accepted: 27 January 2011
  • Published:

Abstract

The designing of algorithms for real-time digital simulation of analog effects and amplifiers brings two contradictory requirements: accuracy versus computational efficiency. In this paper, the simulation of a typical guitar tube preamp using an approximation of the solution of differential equations is discussed with regard to accuracy and computational complexity. The solution of circuit equations is precomputed and stored in N-D tables. The stored values are approximated, and therefore different approximation techniques are investigated as well. The approximated functions are used for output signal computation and also for circuit state update. The designed algorithm is compared to the numerical solution of the given preamp and also to the real preamp.

Keywords

  • Differential Equation
  • Information Technology
  • Computational Complexity
  • Output Signal
  • Quantum Information

Publisher note

To access the full article, please see PDF.

Authors’ Affiliations

(1)
Faculty of Electrical Engineering and Communication, Brno University of Technology, 61600 Brno, Czech Republic

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