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# 信号処理

## 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.DigitalUpConverter` Interpolate digital signal and translate it from baseband to IF band `dsp.FarrowRateConverter` Polynomial sample rate converter with arbitrary conversion factor `dsp.SampleRateConverter` Multistage sample rate converter
 `dsp.DCBlocker` 入力信号の DC 成分 (オフセット) のブロック `dsp.PhaseExtractor` Extract the unwrapped phase of a complex input `dsp.PhaseUnwrapper` Unwrap signal phase `dsp.ZeroCrossingDetector` ゼロクロッシングの検出
 `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

## 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-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 実数入力サンプルの値の内挿 Repeat Resample 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 Converter Multistage sample-rate conversion Upsample Resample input at higher rate by inserting zeros
 Convolution 2 つの入力の畳み込み DC Blocker Block DC component Detrend ベクトルからの線形トレンドの削除 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 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 Crossing Count 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 Delay Delay 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

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.

フレームベースの処理用の信号の作成

Sine Wave ブロックと Signal From Workspace ブロックを使用してフレームベースの処理用の信号を生成する。

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

Understand sample time, sample rate, frame period, and frame rate in the context of a Simulink model. Determine the sample and frame rates of signals in your model.

Convert Sample and Frame Rates in Simulink Using Rate Conversion Blocks

Learn how direct-rate conversion blocks impact the sample rate and frame rate of signals in Simulink models.

Variable-Size Signal Support DSP System Objects

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

## サポート 