2024-03-28T18:43:41Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/85912016-02-16T04:09:05Zcom_10261_32com_10261_4col_10261_411
DIGITAL.CSIC
author
Cobo, Pedro
author
Fernández, Alejandro
author
Palacios, R.
author
Colina, Carlos de la
author
Siguero, Manuel
2008-11-16T18:56:50Z
2008-11-16T18:56:50Z
2004-09
XXXV Congreso Español de Acústica – TecniAcústica 2004. Metrological and experimental acoustics; ID22
http://hdl.handle.net/10261/8591
Noise barriers can be characterized by using the Adrienne method which combines MLS signals with the subtraction technique. This paper deals with a method to shape the loudspeaker-microphone impulse response which utilizes inverse filtering techniques to design the waveform radiated by the loudspeaker according to some prescribed criterion. For instance, zero-phase cosine-magnitude waveforms provide minimum length within a given frequency band. Therefore, this technique allows approaching the microphone to the loudspeaker, and as a consequence, reduces the lowest reliable frequency of the absorption measurement.
eng
openAccess
Antinoise devices
Noise barriers
Absorption coefficient
Adrienne method
Maximum Length Sequence (MLS) method
Signal subtraction technique
Inverse filtering techniques
Waveform determination
Loudspeaker-microphone setup
In situ absorption measurement of antinoise devices using pre-determined pulse waveforms
comunicación de congreso
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URL
https://digital.csic.es/bitstream/10261/8591/1/ID22.PDF
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ID22.PDF
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https://digital.csic.es/bitstream/10261/8591/4/ID22.PDF.txt
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ID22.PDF.txt