Digital Design of Audio Signal Processing Using Time Delay

  • Mauricio Perez University of São Paulo
  • Rodolfo Coelho de Souza University of São Paulo
  • Regis Rossi Alves Faria University of São Paulo


This poster describes the design in PureData of some audio signals processes in real time like delay, echo, reverb, chorus, flanger e phaser. We analyze the technical characteristics of each process and the psychoacoustic effects produced by them in human perception and audio applications. A deeper comprehension of the consequences of sound processes based on delay lines helps the decision-making in professional audio applications such as the audio recording, mixing, besides music composition that employs sound effects in preprocessed or real-time.

Palavras-chave: Digital Sound Processing


Mauricio di Berardino. Muselectron: Tutorial su PureData, Max/MSP e Axoloti. Available at: Accessed in April of 2019.

Miller S. Puckette. The Theory and Technique of Electronic Music. World Scientific Publishing. 2006.

Jean-Michel Réveillac. Musical Sound Effects: Analog and Digital Sound Processing. Iste Editions, 2018.

Curtis Roads. The Computer Music Tutorial. The MIT Press, 1996.
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PEREZ, Mauricio; DE SOUZA, Rodolfo Coelho; FARIA, Regis Rossi Alves. Digital Design of Audio Signal Processing Using Time Delay. In: SIMPÓSIO BRASILEIRO DE COMPUTAÇÃO MUSICAL (SBCM), 17. , 2019, São João del-Rei. Anais [...]. Porto Alegre: Sociedade Brasileira de Computação, 2019 . p. 207-209. DOI: