標題: Method for virtual bass synthesis
作者: Bai, Mingsian R.
Tseng, Wen-Liang
Lin, Wan-Chi
公開日期: 1-十一月-2007
摘要: This invention relates to a method for virtual bass synthesis. The low frequency signal is attained by applying a low pass filter to the original. In order to reduce the operations, process of down sampling the low frequency signal, moving the low frequency signal to a series of harmonics whose frequencies are integral times as large as the frequency of low frequency signals, and then up sampling them are provided. By means of psycho-acoustic theory, the weights of harmonics are attained and applied to the harmonics. Finally the weighted harmonics are combined to produce the bass signal. As the result, the virtual bass effect which is almost the same as the low frequency of the original audio signal can be accomplished. Because the harmonic signals are high frequency ones, the virtual effect can be made in the panel speakers or ordinary low-end speakers.
官方說明文件#: H03G005/00
H03G003/00
URI: http://hdl.handle.net/11536/105630
專利國: USA
專利號碼: 20070253576
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