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Importation et exportation de signaux
R2026aS’interfacer avec des signaux externes
Vous pouvez utiliser les blocs et les System objects de lecture et d’écriture de fichier de DSP System Toolbox™ pour lire et écrire des données dans des fichiers audio, binaires et MAT. L’objet dsp.SignalSource et les blocs comme Signal From Workspace et To Workspace (Simulink) vous permettent d’importer et d’exporter des signaux depuis l’espace de travail MATLAB®. Les objets et blocs UDP Send et Receive vous permettent d’émettre des paquets de données sur le réseau UDP. Vous pouvez également jouer de l’audio sur la carte son de votre équipement avec l’objet et le bloc Audio Device Writer.
Objets
Blocs
 | Binary File Reader | Read data from binary files |
 | Binary File Writer | Write data to binary files |
 | From Multimedia File | Stream from multimedia file |
 | To Multimedia File | Stream video frames and audio samples to multimedia file |
 | From Workspace | Load signal data from workspace into Simulink model |
 | Signal From Workspace | Import signal from MATLAB workspace |
 | Triggered Signal From Workspace | Import signal samples from MATLAB workspace when triggered |
 | Triggered To Workspace | Write input sample to MATLAB workspace when triggered |
 | To Workspace | Log data to workspace from Simulink model |
 | Audio Device Writer | Play to sound card |
 | UDP Receive | Receive UDP packets on a given IP port |
 | UDP Send | Send UDP message |
Rubriques
Fichiers binaires
- Write and Read Binary Files
Usedsp.BinaryFileReaderanddsp.BinaryFileWriterto read and write data to binary files. - Write and Read Matrix Data
Usedsp.BinaryFileReaderanddsp.BinaryFileWriterto read and write matrix data to binary files. - Write and Read Fixed-Point Data
Write and read fixed-point data. - Write and Read Character Data
Write and read character data. - Write and Read Binary Files in Simulink
Write data to a binary file and read the same data in Simulink®. - Write and Read Matrix Data from Binary Files in Simulink
Write matrix data to a binary file. Read the data as a real matrix and a complex matrix. - Write and Read Fixed-Point Data from Binary Files in Simulink
Write and read fixed-point data from a binary file. - Write and Read Character Data from Binary Files in Simulink
Write and read character data from a binary file. - Change the Endianness of the Data in Simulink
Change the endianness of the data in simulink.
Espace de travail
- 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. The 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.
Dispositifs et réseau
- Byte Transmission Using UDP
Use thedsp.UDPSenderanddsp.UDPReceiverobjects to send and receive UDP packets over the network. - Transmit Complex Data over UDP Network
Transmit complex STFT data over UDP network. - Data Transmission Using UDP in Simulink
Transmit and receive a sine wave signal over UDP network. - Decrease Underrun
Examine the Audio Device Writer block in a Simulink® model, determine underrun, and decrease underrun.
