Modeling and measuring a Moog voltage-controlled filter

Effrosyni Paschou, Fabian Esqueda Flores, Vesa Välimäki, John Mourjopoulos

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference article in proceedingsScientificvertaisarvioitu

6 Sitaatiot (Scopus)
291 Lataukset (Pure)


The analog voltage-controlled filter used in historical music synthesizers by Moog is modeled using a digital system, which is then compared in terms of audio measurements with the original analog filter. The analog model is mainly borrowed from D’Angelo’s previous work. The digital implementation of the filter incorporates a recently proposed antialiasing method. This method enhances the clarity of output signals in the case of large-level input signals, which cause harmonic distortion. The combination of these two ideas leads to a novel digital model, which represents the state of the art in virtual analog musical filters. It is shown that without the antialiasing, the output signals
in the nonlinear regime may be contaminated by undesirable spectral components, which are the consequence of aliasing, but that the antialiasing technique suppresses these components sufficiently. Comparison of measurements of the analog and digital filters show that the digital model is accurate within a few dB in the linear regime and has very similar behavior in
the nonlinear regime in terms of distortion. The proposed digital filter model can be used as a building block in virtual analog music synthesizers.
OtsikkoProceedings of the Ninth Annual Conference of the Asia-Pacific Signal and Information Processing Association
JulkaisupaikkaKuala Lumpur
Sivut1641 - 1647
ISBN (elektroninen)978-1-5386-1542-3
DOI - pysyväislinkit
TilaJulkaistu - 2017
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaAsia-Pacific Signal and Information Processing Association Annual Summit and Conference - Aloft Kuala Lumpur Sentral, Kuala Lumpur, Malesia
Kesto: 12 jouluk. 201715 jouluk. 2017
Konferenssinumero: 9


ConferenceAsia-Pacific Signal and Information Processing Association Annual Summit and Conference
KaupunkiKuala Lumpur


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