Implementation the active noise control to fan airborne noise of multimedia projector
Автор: Troshin Andrey, Bykov Andrey
Журнал: Техническая акустика @ejta
Статья в выпуске: т.6, 2006 года.
Бесплатный доступ
Implementation the active noise control technology using Digital Signal Processing (DSP) core is presented. The case of airborne noise for EPSON projector fan is studied. The noise source ranking based on separate running method has been implemented to reveal the most significant noise source among three fans incorporated into multimedia projector. A short duct system containing noise cancelling speaker, reference and error microphones and DSP board with ported adaptive feed forward algorithm to cancelling critical tonal components of the fan noise were applied. The suppression of 6…10 dB for airborne noise of the fan in multimedia projector at tonal frequencies was obtained.
Короткий адрес: https://sciup.org/14316057
IDR: 14316057
Список литературы Implementation the active noise control to fan airborne noise of multimedia projector
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