Trasformazioni di frequenza

Trasformare i filtri in altre forme, utilizzare le feature di un filtro per crearne un altro

DSP System Toolbox™ offre diverse funzioni che trasformano i filtri FIR e IIR esistenti in altre forme per ottenere risposte in frequenza diverse. L'idea generale alla base della trasformazione di frequenza consiste nell'utilizzare un filtro prototipo esistente per generare un altro filtro che conservi alcune caratteristiche del filtro prototipo nel dominio della frequenza. Per ulteriori informazioni, vedere Digital Frequency Transformations.

Funzioni

espandi tutto

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 IIR lowpass filter to IIR 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

Argomenti

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