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1. 发明授权

US09583088B1 Frequency domain training to compensate acoustic instrument pickup signals 有权
标题翻译：频域训练来补偿声学仪器拾音信号
公开(公告)号：US09583088B1
公开(公告)日：2017-02-28
申请号：US14946609
申请日：2015-11-19
申请人： Audio Sprockets LLC
发明人： James May , Andrew Leon Norrell
IPC分类号： G10H1/08 , G10H7/00 , G10H3/18
CPC分类号： G10H3/186 , G10H2250/075 , G10H2250/115 , G10H2250/235
摘要： Apparatus and associated methods relate to training FIR filter coefficients by deconvolving a first input signal and a second input signal in the frequency domain, both of the signals being generated in response to an undetermined broadband excitation applied to an acoustic body instrument, until a fidelity of the second signal convolved with the trained coefficients meets predetermined fidelity criteria relative to the first signal. In an illustrative example, a musical instrument pickup signal and a microphone signal from the musical instrument may be sampled, segmented, and transformed to the frequency domain. FIR filter coefficients may be, for example, trained by block deconvolution in the frequency domain of the microphone signal and the pickup signal. In various examples, the trained FIR filter coefficients may adapt the pickup signal to mimic microphone performance, including full-body acoustic content.
摘要翻译：设备和相关方法涉及通过对频域中的第一输入信号和第二输入信号进行去卷积来训练FIR滤波器系数，这两个信号是响应于施加到声体仪器的不确定宽带激励而产生的，直到保真度与经训练的系数卷积的第二信号相对于第一信号满足预定的保真度标准。在说明性示例中，来自乐器的乐器拾取信号和麦克风信号可被采样，分段并变换到频域。 FIR滤波器系数可以例如通过麦克风信号的频域中的块去卷积和拾取信号进行训练。在各种示例中，经训练的FIR滤波器系数可以使拾取信号适应模拟麦克风性能，包括全身声学内容。

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