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信号処理

遅延、内挿、並べ替え、リサンプリング、ウィンドウ

オブジェクト

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dsp.DigitalDownConverter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
dsp.DigitalUpConverterInterpolate digital signal and translate it from baseband to IF band
dsp.FarrowRateConverterPolynomial sample rate converter with arbitrary conversion factor
dsp.InterpolatorLinear or polyphase FIR interpolation
dsp.SampleRateConverterMultistage sample rate converter
dsp.Convolver2 つの信号の畳み込み
dsp.DCBlocker入力信号の DC 成分 (オフセット) のブロック
dsp.WindowApply window to input signal
dsp.PeakFinder(To be removed) Identify peak values in input signal
dsp.PhaseExtractorExtract the unwrapped phase of a complex input
dsp.PhaseUnwrapperUnwrap signal phase
dsp.ZeroCrossingDetectorゼロクロッシングの検出
dsp.DelayDelay input signal by fixed samples
dsp.VariableFractionalDelayDelay input by time-varying fractional number of sample periods
dsp.VariableIntegerDelayDelay input by time-varying integer number of sample periods

ブロック

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Downsampleサンプルを削除することで低いレートで入力をリサンプリングする
Digital Down-ConverterTranslate digital signal from Intermediate Frequency (IF) band to baseband and decimate it
Digital Up-ConverterInterpolate digital signal and translate it from baseband to Intermediate Frequency (IF) band
Farrow Rate ConverterPolynomial sample-rate converter with arbitrary conversion factor
Interpolation実数入力サンプルの値の内挿
RepeatResample input at higher rate by repeating values
Sample and Hold入力信号のサンプルとホールド
Sample-Rate ConverterMultistage sample-rate conversion
UpsampleResample input at higher rate by inserting zeros
Convolution2 つの入力の畳み込み
DC BlockerBlock DC component
DetrendRemove linear trend from vectors
OffsetTruncate vectors by removing or keeping beginning or ending values
PadPad or truncate specified dimension(s)
Peak FinderDetermine whether each value of input signal is local minimum or maximum
Phase ExtractorExtract the unwrapped phase of a complex input
Unwrap信号位相のアンラップ
Window Functionウィンドウの計算と入力信号への適用
Zero CrossingCount number of times signal crosses zero in single time step
Variable Integer Delay固定または可変サンプル周期により入力信号を遅延する
Variable Fractional DelayDelay input by time-varying fractional number of sample periods

トピック

サンプルベースおよびフレームベースの概念

実際のサンプル信号とフレームベースの信号、および MATLAB® と Simulink® でこれらの信号をモデル化する方法の紹介

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™.

注目の例