Waveform detection, in particular for the represen

专利名称：Waveform detection, in particular for the

representation of the root mean square of awaveform

发明人：Brian Cuthbertson,Peter Gordon Davy申请号：US10558213申请日：20040527

公开号：US20070063753A1公开日：20070322

专利附图：

摘要：The instantaneous value of an intermediate waveform I is the instantaneousvalue of a unipolar waveform U multiplied through amplification by an upscaling factor UF

of 1.5. A plateau value P is subtracted from the intermediate value I, and the result of thissubtraction is multiplied by a multiplication factor MF of 0.6. The result of the

multiplication is added to the plateau value P, which sum becomes an auxiliary waveformA. During the fall-below periods F, the value of a combined waveform C is arranged tofollow whichever is the highest of the auxiliary value A and the plateau value P. Outsidethe fall-below periods, the value of the combined waveform C follows whichever is thehighest of the unipolar value U and the plateau value P. This combined waveform C has,for a given plateau level P, a narrower fall-below window. Phase-chopping thus has aneffect on the power of the output signal over a greater range of the cycle than can beprovided by the corresponding prior art arrangement.

申请人：Brian Cuthbertson,Peter Gordon Davy

地址：Hampstead, London NW6 3NE GB,London GB

国籍：GB,GB

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