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A full modulated way for pneumatic loudspeaker sound generation
Author(s): YANG Yichun, ZUO Pengxiao
Pages: 192-
199
Year: 2010
Issue:
2
Journal: Acta Acustica
Abstract: 发展了一种耗气量小和背景噪声低的气流声源新调制模型.建立了全调制气流声源模型,零流量被设置为气流扬声器的静态,音频调制信号经过了去下包络预处理.控制通气量与调制信号成正比,降低气流消耗和减小背景噪声,与四类主要气流扬声器调制方式的效率进行了对比.与半通气调制方法相比较,全调制方法对典型语言广播的气流利用率从5%提高到51.5%,播放正弦波的气流利用率始终保持最大值60%,并使播放声音的信噪比提高1...
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