|Polyphase FFT analysis filter bank|
|Polyphase FFT synthesis filter bank|
|Polynomial sample rate converter with arbitrary conversion factor|
|Polyphase FIR decimator|
|Polyphase FIR interpolator|
|Sample rate converter|
|Polyphase filter bank and fast Fourier transform—optimized for HDL code generation|
|Upsample, filter, and downsample—optimized for HDL code generation|
|Decimate by factor of two using polyphase IIR|
|Interpolate by a factor of two using polyphase IIR|
|Extract a frequency subband using a one-sided (complex) bandpass decimator|
|デジタル信号を中間周波数 (IF) 帯域からベースバンドに変換して間引きする|
|Interpolate digital signal and translate it from baseband to IF band|
|Create cascade of filter System objects|
|Multistage sample rate converter|
|Compensate for CIC decimation filter using FIR decimator|
|Compensate for CIC interpolation filter using FIR interpolator|
|カスケード接続積分器櫛形 (CIC) フィルターを使用して信号を間引く|
|Interpolate signal using cascaded integrator-comb filter|
|Channelizer||Polyphase FFT analysis filter bank|
|Channelizer HDL Optimized||Polyphase filter bank and fast Fourier transform—optimized for HDL code generation|
|Channel Synthesizer||Polyphase FFT synthesis filter bank|
|Farrow Rate Converter||Polynomial sample-rate converter with arbitrary conversion factor|
|FIR Decimation||Filter and downsample input signals|
|FIR Halfband Decimator||Decimate signal using polyphase FIR halfband filter|
|FIR Halfband Interpolator||Interpolate signal using polyphase FIR half band filter|
|FIR Interpolation||Upsample and filter input signals|
|FIR Rate Conversion||Upsample, filter, and downsample input signals|
|FIR Rate Conversion HDL Optimized||Upsample, filter, and downsample input signals—optimized for HDL code generation|
|IIR Halfband Decimator||Decimate signal using polyphase IIR halfband filter|
|IIR Halfband Interpolator||Interpolate signal using polyphase IIR halfband filter|
|Complex Bandpass Decimator||Extract a frequency subband using a one-sided (complex) bandpass decimator|
|Digital Down-Converter||Translate digital signal from Intermediate Frequency (IF) band to baseband and decimate it|
|Digital Up-Converter||Interpolate digital signal and translate it from baseband to Intermediate Frequency (IF) band|
|Sample-Rate Converter||Multistage sample-rate conversion|
|Dyadic Analysis Filter Bank||Decompose signals into subbands with smaller bandwidths and slower sample rates or compute discrete wavelet transform (DWT)|
|Dyadic Synthesis Filter Bank||Reconstruct signals from subbands with smaller bandwidths and slower sample rates or compute inverse discrete wavelet transform (IDWT)|
|Two-Channel Analysis Subband Filter||Decompose signal into high-frequency and low-frequency subbands|
|Two-Channel Synthesis Subband Filter||Reconstruct signal from high-frequency and low-frequency subbands|
Defines a multirate filter and describes its uses
Defines a multistage filter and describes its uses
Multirate filters alter the sample rate of the input signal during the filtering process. Such filters are useful in both rate conversion and filter bank applications.
This example shows how to design lowpass FIR Nyquist filters. It also compares these filters with raised cosine and square root raised cosine filters. These filters are widely used in pulse-shaping for digital transmission systems. They also find application in interpolation/decimation and filter banks.
This example shows how to design filters for decimation and interpolation. Typically lowpass filters are used for decimation and for interpolation. When decimating, lowpass filters are used to reduce the bandwidth of a signal prior to reducing the sampling rate. This is done to minimize aliasing due to the reduction in the sampling rate. When interpolating, lowpass filters are used to remove spectral images from the low-rate signal. For general notes on lowpass filter design see the example on Designing Low Pass FIR Filters.
Shows the efficiency gains that are possible when using multirate and multistage filters for certain applications.
Presents a detailed reference covering the fixed-point, multirate, and scaling pages of the Filter Designer App.
DSP System Toolbox™ software provides a collection of multirate filtering examples that illustrate typical applications of the multirate filtering blocks.
Learn how to calculate the latencies required for perfect wavelet reconstruction
List of System objects which support variable-sized signals in DSP System Toolbox.
Use a Dataflow Subsystem to automatically calculate frame sizes in multirate systems.