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词汇 Quadrature filter
分类 英语词汇 英语翻译词典
释义

Quadrature filter

英语百科

Quadrature filter

In signal processing, a quadrature filter q(t) is the analytic representation of the impulse response f(t) of a real-valued filter:

If the quadrature filter q(t) is applied to a signal s(t), the result is

which implies that h(t) is the analytic representation of (f * s)(t).

Since q is an analytic signal, it is either zero or complex-valued. In practice, therefore, q is often implemented as two real-valued filters, which correspond to the real and imaginary parts of the filter, respectively.

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