Published May 10, 2013


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Pedro Pablo Liévano-Torres, BSc

John Michael Espinosa-Duran, MSc

Jaime Velasco-Medina, PhD



Digital audio effects are generally implemented in software using DSP or PC; nevertheless, some implementations using dedicated hardware are currently being considered. This paper presents the implementation in hardware of fifteen algorithms for the real-time processing of digital audio effects with sampling rates up to 100.88 MSPS and high-fidelity. Designs were simulated using DSPBuilder and were synthesized in the FPGA EP2C70F896C6. The hardware verification tests of the implemented effects show that the designed blocks can be used as IP cores for the design of a multi effects processor embedded in a SoC.


Digital audio effects, embedded systems, DSP, dynamic domains processingEfectos de audio digital, sistemas embebidos, DSP, procesamiento en dominio dinámico

BERDAHL, E. y SMITH, J. Some physical audio effects. 9th International Conference on Digital Audio Effects. Montreal, Canada, 2006, pp. 165-168.
BYUN, K.; KOWN, Y.; KOO, B.; EUM, N.; JEONG, K. y KOO, J. Implementation of digital audio effect SoC. IEEE International Conference on Multimedia and Expo. New York, USA, 2009, pp. 1194-1197.
FERNÁNDEZ, P. y CASAJUS, J. Multiband approach to digital audio FX. IEEE International Conference on Multimedia and Expo. Nueva York, USA, 2000, pp. 1747-1750.
GUILLEMARD, M.; RUWWE, C. y ZÖLZER, U. J-DAFX - digital audio effects in JAVA. 8th International Conference on Digital Audio Effects. Madrid, España, 2005, pp. 1-6.
KARJALAINEN, M.; PENTTINEN, H. y VALIMAKI, V. Acoustic sound from the electric guitar using DSP techniques. IEEE International Conference on Proceedings of the Acoustics, Speech, and Signal Processing. Istanbul, Turkey, 2000.
LING, F.; KHUEN, F. y RADHAKRISHNAN, D. An audio processor card for special sound effects. IEEE Midwest Symposium on Circuits and Systems. Michigan, USA, 2000, pp. 730-733.
MCGOVERN, S. Guitar distortion effect [documento en línea]. 2004. [consulta: 13-03-2012].
OBORIL, D.; BARIK, M.; SCHIMMEL, J.; SMEKAL, Z. y KRKAVEC, P. Modelling digital musical effects for signal processors, based on real effect manifestation analysis. Conference on Digital Audio Effects. Verona, Italia, 2000, pp. 1-6.
PERALTA, F.; DUCHÉN, G. y VÁZQUEZ, R. Información tecnológica [documento en línea]. 2006, vol. 17. [consulta: 13-03-2012].
PÉREZ, A. Estudio de efectos de audio para guitarra, e implantación mediante DSP. Tesis de pregrado, Universidad Pontificia Comillas, 2006.
PFAFF, M.; MALZNER, D.; SEIFERT, J.; TRAXLER, J.; WEBER, H. y WIENDL, G. Implementing digital audio effects using hardware/software co-design approach. 10th International Conference on Digital Audio Effects. Bordeux, Francia, 2007, pp. 1-8.
SCHIMMEL, J.; SMEKAL, Z. y KRKAVEC, P. Optimizing digital musical effect implementation for multiple processor DSP systems. 5th International Conference on Digital Audio Effects. Hamburgo, Alemania, 2002, pp. 81-84.
TSAI, P.; WANG, T. y SU, A. GPU-based spectral model synthesis for real-time sound rendering. 13th International Conference on Digital Audio Effects. Graz, Austria, 2010, pp. 1-5.
VERFAILLE, V.; ZÖLZER, U. y ARFID, D. Adaptive digital audio effects (A-DAFx): a new class of sound transformations. IEEE Transactions on Audio, Speech, and Language Processing. 2006, vol. 14, núm. 5, pp. 1817-1831.
ZÖLZER, U. DAFX - Digital Audio Effects. London: John Wiley & Sons, 2002.
How to Cite
Liévano-Torres, P. P., Espinosa-Duran, J. M., & Velasco-Medina, J. (2013). Algorithm implementation in high-fidelity digital audio effects using programmable hardware. Ingenieria Y Universidad, 17(1), 93–108.