Importazione ed esportazione dei segnali
R2026aInterfacciarsi con segnali esterni
Utilizzando i System object e i blocchi di DSP System Toolbox™ per la lettura e la scrittura di file, è possibile leggere e scrivere dati da file audio, file binari e file MAT. L'oggetto dsp.SignalSource e i blocchi come Signal From Workspace e To Workspace (Simulink) consentono di importare ed esportare i segnali dal workspace di MATLAB®. Gli oggetti e i blocchi UDP Send e Receive consentono di trasmettere pacchetti di dati sulla rete UDP. È inoltre possibile utilizzare l'oggetto e il blocco Audio Device Writer per riprodurre l'audio sulla scheda audio del dispositivo.
Oggetti
Blocchi
 | 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 | Registrare i dati nel workspace dal modello di Simulink |
 | Audio Device Writer | Play to sound card |
 | UDP Receive | Receive UDP packets on a given IP port |
 | UDP Send | Send UDP message |
Argomenti
File binari
- 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.
Workspace
- 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.
Dispositivi e rete
- 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.
