주파수 변환

필터를 다른 형태로 변환, 필터의 특징을 사용하여 다른 필터 개발

DSP System Toolbox™는 다양한 주파수 응답을 얻기 위해 기존 FIR 필터 및 IIR 필터를 다른 형태로 변환하는 여러 함수를 제공합니다. 주파수 변환이란 기존 프로토타입 필터를 사용하여 주파수 영역에서 프로토타입 필터의 몇 가지 특성이 보존된 또 다른 필터를 생성하는 것입니다. 자세한 내용은 Digital Frequency Transformations 항목을 참조하십시오.

함수

모두 확장

FIR

`firlp2hp`	Transform FIR lowpass filter to Type I FIR highpass filter
`firlp2lp`	Transform FIR Type I lowpass to FIR Type 1 lowpass with inverse bandwidth

IIR

`iirbpc2bpc`	Transform IIR complex bandpass filter to IIR complex bandpass filter with different characteristics
`iirftransf`	IIR frequency transformation of digital filter
`iirlp2bp`	Transform IIR lowpass filter to IIR bandpass filter
`iirlp2bpc`	Transform IIR lowpass filter to complex bandpass filter
`iirlp2bs`	Transform IIR lowpass filter to IIR bandstop filter
`iirlp2bsc`	Transform IIR lowpass filter to complex bandstop filter
`iirlp2hp`	Transform lowpass IIR filter to highpass filter
`iirlp2lp`	Transform lowpass IIR filter to different lowpass filter
`iirlp2mb`	Transform IIR lowpass filter to IIR multiband filter
`iirlp2mbc`	Transform IIR lowpass filter to IIR complex multiband filter
`iirlp2xc`	Transform IIR lowpass filter to IIR complex N-point filter
`iirlp2xn`	Transform IIR lowpass filter to IIR real N-point filter
`iirpowcomp`	Power complementary IIR filter

도움말 항목

Digital Frequency Transformations
Learn how to transform discrete-time filters.
References — Frequency Transformations
Suggested reading and sources for information about filter frequency transformations.