Jack Latham

Last seen: 3年以上前 | 2016 年からアクティブ

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質問

Can you train a classification model to prioritise precision?
I'm working on a binary classification problem where the precision of classifying a particular class is far more valuable than o...

4年弱前 | 1 件の回答 | 0

1

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質問

Methods to filter a feature matrix to change balance of labels (binary classification)?
I am working on a binary classification problem that is very unbalanced, e.g., 90% class 0, and 10% class 1. I am experimenting ...

4年弱前 | 1 件の回答 | 0

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質問

Could someone give an example of how to calculate ARMA PSD values?
I'd like to estimate psd values for an audio sample using an ARMA approach, but can't seem to quite work out how to do it! If so...

5年以上前 | 0 件の回答 | 0

0

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質問

How to record audio continuously, and have access to last x seconds of data??
I would like to be able to record audio continuosly, and be able to process the last say 10 seconds of data. The recording may ...

5年以上前 | 2 件の回答 | 0

2

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質問

Make UIAxes invisible/visible when stacked in App desginer..
I'm using App designer to desing an app.. I have a couple of UIAxes stacked above each other, and am trying to set ones I want t...

5年以上前 | 1 件の回答 | 0

1

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質問

How to compile gtcc.m?!
I have code that extracts a number of features, including gammatone cepstral coefficients using the matlab function gtcc. This ...

5年以上前 | 1 件の回答 | 0

1

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質問

A clever way to have dynamic output variables from a function??
I have a function which creates a feature matrix with ~1500 different features, I'd like to pass an index of selected features t...

5年以上前 | 1 件の回答 | 0

1

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質問

"Undefined function or variable" when the directory is correct, and function is there!?
I'm having a frustrating issue with MATLAB, I'm very often getting an error - "Undefined function or variable" when calling a fu...

6年弱前 | 0 件の回答 | 0

0

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質問

TCP/IP data collection from instrument w/o any information
I'm trying to stream data from an ultrasound device, and am not getting very far. Any help/suggestions would be FABULOUS. So I...

約6年前 | 0 件の回答 | 0

0

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質問

How to get label order w.r.t. scores from classification?
I've got a number of different neural network models, which I can classify images by using, [Labels, scores] = classify(net,...

7年弱前 | 1 件の回答 | 0

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質問

Real-time audio classification -> how to get latest X seconds of audio input
I'm putting together a program to classify audio signals (input via mic) in real time. The classification portion of the code ca...

7年弱前 | 0 件の回答 | 0

0

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質問

How to identify when an Image classifier is passed an image which fits poorly with all classification labels
I've retrained AlexNet to identify images corresponding to 3 different classes. I'd like to obtain a confidence measure for the ...

約7年前 | 0 件の回答 | 0

0

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質問

Outputs of classifiers and how to measure confidence?
Hi, so I'm using the classification learner to train various models. I've found that the trained models can output (as well the ...

7年以上前 | 1 件の回答 | 0

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質問

Recording audio reduces speaker level!?
When I record audio (using record(recObj, time)) the level of audio being played is reduced. This doesn't effect the running of ...

7年以上前 | 0 件の回答 | 0

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質問

Disadvantages of using large NFFT value in pwelch/spectrogram
I'm using the pwelch function to analyse power spectrums of an audio signal: w = 512; nfft = 4096; ...

8年以上前 | 1 件の回答 | 1

1

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質問

Why can't I plot a spectrogram in my GUI?!?
So I have a gui that allows me to record audio, and then either plot a time history or a spectrogram of the data depending on a ...

8年以上前 | 1 件の回答 | 1

1

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