Simulink tapped delay block with vector inputs

11 次查看（过去 30 天）
Sean
Sean 2025-3-13
评论： Sean 2025-8-12
All,
I have often needed a "shift-register" function in Simulink that can accept vector inputs. The tapped delay only supports scalar inputs. I typically build this function using the "Matlab Function" block.
How do other people solve this problem? Is there a built-in solution I am not aware of?
Maybe someone from MathWorks is reading these questions? It is a pretty big gap that there is no built-in way to build a shift register with vectors.
Thanks.

请先登录，再回答此问题。

采纳的回答

Vanita
Vanita 2025-8-12
Hi Sean,
To build a shift register block with vector input in Simulink, the Delay Line block from the DSP System Toolbox is a good option. This block supports vector inputs and can implement a shift register by delaying the input signal by a set number of samples. You can refer to the following document for more details:
https://www.mathworks.com/help/dsp/ref/delayline.html
Hope this helps!
  1 个评论
Sean
Sean 2025-8-12
I was unaware that the Delay Line block might work. I am not in a position to test it, but I appreciate the information. Thanks!

请先登录，再进行评论。

更多回答（1 个）

praguna manvi
praguna manvi 2025-3-17
Hi @Sean,
The "Tapped Delay" block natively accepts only scalar inputs. A workaround to pass vector inputs is to use a "Buffer" block, setting the "Overlap" property to one less than the buffer size. Here is a useful discussion thread on a similar use case:
https://www.mathworks.com/matlabcentral/answers/306046-tapped-delay-with-array-input
For more information on the "Buffer" block, refer to the following link:
https://www.mathworks.com/help/dsp/ref/buffer.html
  1 个评论
Sean
Sean 2025-3-17
Thanks for the response.
There are two problems with using the buffer block:
  1. The sample rate changes. This isn't always what you want.
  2. This block is not compatible with some of the codegen tools (the HDL coder, for example).

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Measurements and Statistics 的更多信息

标签

产品


版本

R2024b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by