信号生成
您可以使用 DSP System Toolbox™ 中的源模块和 System object 为基于采样和基于帧的处理创建信号。
Colored Noise 和 Sine Wave 等源模块使用预定义的算法生成信号。其中大多数模块可以控制它们生成的每个帧（列）中的采样数。有关如何使用这些源模块生成信号的示例，请参阅Create Signals for Sample-Based Processing和Create Signals for Frame-Based Processing。
对象
dsp.ColoredNoise | Generate colored noise signal |
dsp.Chirp | Generate swept-frequency cosine (chirp) signal |
dsp.NCO | Generate real or complex sinusoidal signals |
dsp.SignalSource | Import variable from workspace |
dsp.SineWave | Generate discrete sine wave |
模块
| Chirp | Generate swept-frequency cosine (chirp) signal |
| Colored Noise | Generate colored noise signal |
| Constant | Constant value |
| Constant Ramp | Generate ramp signal with length based on input dimensions |
| Discrete Impulse | Generate discrete impulse |
| Multiphase Clock | Generate multiple binary clock signals |
| N-Sample Enable | Output ones or zeros for specified number of sample times |
| NCO | Generate real or complex sinusoidal signals |
| Random Source | Generate randomly distributed values |
| Sine Wave | Generate continuous or discrete sine wave |
主题
- Discrete-Time Signals
Overview of discrete-time signals. Discusses the similarities and differences between using fixed-step solvers and variable-step solvers while handling discrete-time signals.
- Continuous-Time Signals
Overview of continuous-time signals.
- Sample- and Frame-Based Concepts
Explore basic signal concepts in the context of a Simulink® model. Learn more about sample-based processing and frame-based processing.
- Create Signals for Sample-Based Processing
Use the Constant block and the Signal From Workspace block to generate signals for sample-based processing. Use the Matrix Concatenate block to combine signals to form multichannel signals.
- Create Signals for Frame-Based Processing
Use the Sine Wave block and the Signal From Workspace block to generate signals for frame-based processing. Use Matrix Concatenate block to combine signals to form multichannel signals.
- 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.
- Delay and Latency
Configure the Simulink environment to minimize delay and increase simulation performance.
