Signal Operations

Delay, interpolate, reorder, resample, window

Objects

Rate Conversion

`dsp.DigitalDownConverter`	Translate digital signal from intermediate frequency (IF) band to baseband and decimate it
`dsp.DigitalUpConverter`	Interpolate digital signal and translate it from baseband to IF band
`dsp.FarrowRateConverter`	Polynomial sample rate converter with arbitrary conversion factor
`dsp.Interpolator`	Linear or polyphase FIR interpolation
`dsp.SampleRateConverter`	Multistage sample rate converter

Signal Operation

`dsp.Convolver`	Convolution of two signals
`dsp.DCBlocker`	Block DC component (offset) from input signal
`dsp.Window`	Apply window to input signal
`dsp.PhaseExtractor`	Extract the unwrapped phase of a complex input
`dsp.PhaseUnwrapper`	Unwrap signal phase
`dsp.ZeroCrossingDetector`	Detect zero crossings

Delay

`dsp.Delay`	Delay input signal by fixed samples
`dsp.VariableFractionalDelay`	Delay input by time-varying fractional number of sample periods
`dsp.VariableIntegerDelay`	Delay input by time-varying integer number of sample periods

Blocks

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Rate Conversion

Downsample	Resample input at lower rate by deleting samples
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
Farrow Rate Converter	Polynomial sample-rate converter with arbitrary conversion factor
Interpolation	Interpolate values of real input samples
Repeat	Resample input at higher rate by repeating values
Sample and Hold	Sample and hold input signal
Sample-Rate Converter	Multistage sample-rate conversion
Upsample	Resample input at higher rate by inserting zeros

Signal Operations

Convolution	Convolution of two inputs
DC Blocker	Block DC component
Detrend	Remove linear trend from vectors
Offset	Truncate vectors by removing or keeping beginning or ending values
Pad	Pad or truncate specified dimension(s)
Peak Finder	Determine whether each value of input signal is local minimum or maximum
Phase Extractor	Extract the unwrapped phase of a complex input
Unwrap	Unwrap signal phase
Window Function	Compute and apply window to input signal
Zero Crossing	Count number of times signal crosses zero in single time step

Delay

Variable Integer Delay	Delay input signal by fixed or variable sample periods
Variable Fractional Delay	Delay input by time-varying fractional number of sample periods

Topics

Sample- and Frame-Based Concepts

Introduction to real-world sample- and frame-based signals, and how to model those signals in MATLAB^® and Simulink^®.

Delay and Latency

Configure the Simulink environment to minimize delay and increase simulation performance.

Create Signals for Sample-Based Processing

Use the Constant block and the Signal From Workspace block to generate signals for sample-based processing.

Create Signals for Frame-Based Processing

Use the Sine Wave block and the Signal From Workspace block to generate signals for frame-based processing.

Create Multichannel Signals for Sample-Based Processing

Use the Concatenate block to create multichannel signals for sample-based processing.

Create Multichannel Signals for Frame-Based Processing

Use the Concatenate block to create multichannel signals for frame-based processing.

Deconstruct Multichannel Signals for Sample-Based Processing

Learn how to extract single-channel and multichannel signals from multichannel signals.

Deconstruct Multichannel Signals for Frame-Based Processing

Learn how to extract single-channel and multichannel signals from multichannel signals and how to reorder channels.

Import and Export Signals for Sample-Based Processing

Import signals from the MATLAB workspace into your DSP model and export signals from your signal processing model to the MATLAB workspace. These signals are configured for sample-based processing.

Import and Export Signals for Frame-Based Processing

Import signals from the MATLAB workspace into your signal processing model and export signals from your signal processing model to the MATLAB workspace. The signals are created for frame-based processing.

Inspect Sample and Frame Rates in Simulink

Learn how to determine the sample and frame rates of signals in your model.

Convert Sample and Frame Rates in Simulink

Learn how operations such as direct rate conversion and frame rebuffering impact the sample and frame rates if your signal.

Variable-Size Signal Support DSP System Objects

List of System objects which support variable-sized signals in DSP System Toolbox™.

Featured Examples

Fractional Delay Filters Using Farrow Structures

Design digital fractional delay filters that are implemented using Farrow structures. Digital fractional delay (fracDelay) filters are useful tools to fine-tune the sampling instants of signals. They are, for example, typically found in the synchronization of digital modems where the delay parameter varies over time. This example illustrates the Farrow structure, a popular method for implementing time-varying FIR fracDelay filters.

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Documentation

Signal Operations

Objects

Rate Conversion

Signal Operation

Delay

Blocks

Rate Conversion

Signal Operations

Delay

Topics

Featured Examples

Fractional Delay Filters Using Farrow Structures

DSP System Toolbox Documentation

Support