필터 구현

싱글레이트, 멀티레이트, 적응 필터

DSP System Toolbox™는 MATLAB^® 및 Simulink^®에서 스트리밍 신호를 필터링할 수 있는 필터 블록과 System object를 제공합니다. 이 툴박스는 일반적인 FIR 및 IIR 필터 이외에 멀티레이트 다단 필터, 파형 디지털 필터, 패로우 필터와 같은 특화된 필터도 제공합니다.

주요 항목

추천 예제

Multistage Rate Conversion

Design multistage rate conversion filters.

스크립트 열기

Multistage Rate Conversion Using FIR Rate Converter

Compare multistage rate conversion with single stage rate conversion using the dsp.FIRRateConverter object.

라이브 스크립트 열기

Time Delay and Scaling in Multirate DSP Filters

Effect of time delay and scaling in multirate filters. Use outputDelay function to calculate the time delay and scaling.

라이브 스크립트 열기

Overlap-Add/Save

Filter a sinusoid with the Overlap-Add and Overlap-Save FFT methods using the Frequency-Domain FIR filter block.

모델 열기

IF Subsampling with Complex Multirate Filters

Use complex multirate filters in the implementation of Digital Down-Converters (DDC). The DDC is a key component of digital radios. It performs the frequency translation necessary to convert the high input sample rates typically found at the output of an analog-to-digital (A/D) converter down to lower sample rates for further and easier processing. In this example, we will see how an audio signal modulated with a 450 kHz carrier frequency can be brought down to a 20 kHz sampling frequency. After a brief review of the conventional DDC architecture, we will describe an alternative solution known as Intermediate Frequency (IF) subsampling and we will compare the respective implementation cost of these two solutions. This example requires a Fixed-Point Designer™ license.