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Hans Scharler
上次活动时间: 2024-1-29

TIL spy

spy

MathWorks Language and Translation Survey

David Marshall
上次活动时间: 2024-1-23

Improving the translation experience on mathworks.com

Hello Community!

We are working on a new translation experience for the MathWorks website and products. The goal is to make it easy for people to see content in the best language for them.

Step 1 is learning from those of you who use another language instead of, or in addition to English. If this sounds like you, we'd love your response to a brief survey.

Feel free to comment here as well. Thanks in advance!

Pavel
上次活动时间: 2024-2-29

Speech Transmission Index for Public Address (STIPA) on GitHub

We've released an open-source implementation of STIPA (Speech Transmission Index for Public Address) on GitHub!

GitHub Repository: https://github.com/zawi01/stipa

What is STIPA?

Speech Transmission Index is a metric designed to assess the quality of speech transmission through a communication channel. It quantifies the intelligibility of speech signals based on amplitude modulations, providing a standardized measure crucial for evaluating public address systems and communication equipment. STIPA is a version of STI using a simplified measurement method and only one test signal.

Quality Representation:

STI values range from 0 to 1, categorizing speech transmission quality from bad to excellent. The raw STI score can be transformed into the likelihood of intelligibility of syllables, words, and sentences being comprehended.

Verification Tests:

To ensure reliability, we've conducted verification tests according to the IEC 60286-16 standard. Download the test signals and run the stipaVerificationTests.m script from our GitHub repository.

Control Measurements:

We've performed comparative measurements in a university auditorium, showcasing the validity of our implementation.

License:

Our STIPA implementation is distributed under the GNU General Public License 3, reflecting our commitment to open-source collaboration.

Matthew Shorter
上次活动时间: 2024-1-22

It would be useful if AI Chat Playground could also refer us to specific documentation

I have been finding the AI Chat Playground very useful for daily MATLAB use. In particular it has been very useful for me in basically replacing or supplementing dives into MATLAB documentation. The documentation for MATLAB is in my experience uniformly excellent and thorough but it is sometimes lengthy and hard to parse and the AI Chat is a great one stop shop for many questions I have. However, I would find it very useful if the AI Chat could answer my queries and then also supply a link directly to the documentation. E.g. a box at the bottom of the answer that is basically

"Here is the documentation on the functions AI Chat referred to in this response"

could be neat.

Fun

Mike Croucher
上次活动时间: 2024-1-19

Quantum computing?

More details on The MATLAB Blog Quantum computing in MATLAB R2023b: On the desktop and in the cloud » The MATLAB Blog - MATLAB & Simulink (mathworks.com)

Hans Scharler
上次活动时间: 2024-1-29

When to use a script vs. a live script?

Over at Reddit, a MATLAB user asked about when to use a script vs. a live script. How would you answer this?

live script

Rizwan
上次活动时间: 2024-1-18

Frequency response of the winding using RLC parameters

I am using simulink for the frequency response analysis of the three phase induction motor stator winding.

The problem is that i can't optimise the pramaeter values manually, for this i have to use genetic algrothem. But iam stucked how to use genetic algorithum to optimise my circuit paramter values like RLC. Any guidence will be highly appreciated.

Chen Lin
上次活动时间: 2024-1-17

Recommended Learning Resources for MATLAB Beginners

Starting with MATLAB can be daunting, but the right resources make all the difference. In my experience, the combination of MATLAB Onramp and Cody offers an engaging start.

MATLAB Onramp introduces you to MATLAB's basic features and workflows. Then practice your coding skill on Cody. Challenge yourself to solve 1 basic problem every day for a month! This consistent practice can significantly enhance your proficiency.

What other resources have helped you on your MATLAB journey? Share your recommendations and let's create a comprehensive learning path for beginners!

Cody

sky
上次活动时间: 2024-1-18

Relative pose in 2D: problem 1

I'm having problem in its test 6 ... passing 5/6 what would be the real issue..

am wring Transformation matrix correct.. as question said SSW should be 202.5 degree...

so what is the issue..

AMIT SURYAVANSHI
上次活动时间: 2024-1-13

Software defined ration

i am just thinking to make a project on software defined ratio SDR using matlab and its toolboxes but I am UG student in ECE don't know how to start can we have discussion here and want the guidance from the best or good persons in the field of wireless communication

Denoise Signals with Adversarial Learning Denoiser Model - MATLAB & Simulink - MathWorks China

mylovexx
上次活动时间: 2024-1-12

Questions about the example "Denoise Signals with Adversarial Learning Denoiser Model"

I am a beginner of deep learning, and meet with some problems in learning the MATLAB example "Denoise Signals with Adversarial Learning Denoiser Model", hope very much to get help!

1. visualizaition of the features

It is my understanding that the encoded representation of the autoencoder is the features of the original signal. However in this example, the output dimension of the encoder is 64xSignalLength. Does it mean that every sample point of the signal has 64 features?

2. usage of the residual blocks

The encoder-decoder model uses residual blocks (which contribute to reconstructing the denoised signal from the latent space, ). However, only the encoder output is connected to the discriminator. Doesn't it cause the prolem that most features will be learned by the residual blocks, and only a few features that could confuse the discriminator will be learned by the encoder and sent to the discriminator?

Hans Scharler
上次活动时间: 2024-2-20

What is the MATLAB tip that you would share with your younger self?

I would tell myself to understand vectorization. MATLAB is designed for operating on whole arrays and matrices at once. This is often more efficient than using loops.

James Prestegard
上次活动时间: 2024-1-12

Training a deep neural net

I have been developing a neural net to extract a set of generative parameters from an image of a 2-D NMR spectrum. I use a pair of convolution layers each followed by a fullyconnected layer; the pair are joined by an addtion layer and that fed to a regression layer. This trains fine, but answers are sub-optimal. I woudl like to add a fully connected layer between the addtion layer and regression, but training using default training scripts simply won't converge. Any suggestions? Maybe I can start with the pre-trained weights for the convolution layers, but I don't know how to do this.

JHP

xiaoyan tian
上次活动时间: 2024-1-4

How to get the information data in the generated image like this?

how can I do to get those informations?

https://www.mathworks.com/matlabcentral/discussions/highlights/838494

DGM
上次活动时间: 2024-1-2

Is it just me, or is the most recent poll now broken?

I noticed a couple new replies show up on the recent poll a day or so ago, but since then, the page can't be loaded anymore in any browser I've tried.

https://programmerhumor.io/programming-memes/the-pain-and-suffering-caused-by-matlab-will-finally-end-soon/

cui,xingxing
上次活动时间: 2024-1-4

Matlab full support for python?

Is MathWorks going to spend 5 years starting in 2024 making Python the #1 supported language?

I'm not sure it's authentic information, and am looking forward to a high level of integration with python.

Reference:

https://www.mathworks.com/content/dam/mathworks/fact-sheet/using-matlab-with-python-cheat-sheet.pdf?source=15572&s_eid=psm_15572

Shore
上次活动时间: 2023-12-30

AI Chat: Thumbs Up/Down

This is not a question, it is my attempt at complying with the request for thumbs up/down voting. I vote thumbs up, for having AI.....

I am not sure if specific AI errors are to be reported. Other messages I just read from others here and the AI Chat itself clearly state that errors abound.

My AI request was: "Plot 300 points of field 2"

AI Chat gave me, in part:

data = thingSpeakRead(channelID, 'Fields', 2, 'NumPoints', 300, 'ReadKey', readAPIKey);
% Extract the field values
field1Values = data.Field1;
% Plot the data
plot(field1Values);

The AI code failed due to "Dot indexing is not supported for variables of this type"

So, I corrected the code thus to get the correct plot:

data = thingSpeakRead(channelID, 'Fields', 2, 'NumPoints', 300, 'ReadKey', readAPIKey);
% Extract the field values
%field1Values = data.Field1;
% Plot the data
plot(data);

I see great promise in AI Chat.

Opie