A Frequency Domain Algorithm for Wave Separation

Giovanni De Sanctis, Maarten Van Walstijn

Research output: Contribution to conferencePaper

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We propose a frequency domain adaptive algorithm for
wave separation in wind instruments. Forward and backward travelling waves are obtained from the signals acquired by two microphones placed along the tube, while the
separation ?lter is adapted from the information given by a
third microphone. Working in the frequency domain has a
series of advantages, among which are the ease of design of
the propagation ?lter and its differentiation with respect to
its parameters.
Although the adaptive algorithm was developed as a ?rst
step for the estimation of playing parameters in wind instruments it can also be used, without any modi?cations, for
other applications such as in-air direction of arrival (DOA)
estimation. Preliminary results on these applications will
also be presented.
Original languageEnglish
Number of pages8
Publication statusPublished - Sept 2009
EventProc. 12th Int. Conference on Digital Audio Effects (DAFx-09) - Como, Italy
Duration: 01 Sept 200901 Sept 2009


ConferenceProc. 12th Int. Conference on Digital Audio Effects (DAFx-09)


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