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Alice


Cardiff University

Active since 2014

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I'm a new PhD student slowly getting to grips with MATLAB for experiment building and analysis.

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Speech onset from audio, wav file
Hi, is it possible to use amplitudes to mark when someone started speaking? I have wav files and I have extracted amplitudes an...

7 years ago | 1 answer | 0

1

answer

Question


multiple .wav files, different playback volumes
I have about 250 .wav audio files which have different volumes during playback. I assume this difference is a result of moving t...

8 years ago | 1 answer | 0

1

answer

Question


Finding coordinates of a rectangle in a picture
I'm running an eyetracking experiment. I display an image using the Screen function from psychtoolbox and I want to know the co...

8 years ago | 3 answers | 0

3

answers

Question


Time stamping when audio begins to play
Is there a way of getting a timestamp for when you start playing audio similar to how you can get a timestamp for a Screen flip?...

8 years ago | 1 answer | 0

1

answer

Question


Compare values in a table to a set of criteria
Hi so I have a table with a variable rt. I want to create a new variable which tells me if the values in rt are within a cert...

9 years ago | 1 answer | 0

1

answer

Question


How to increase count for different counters in if loop.
I'm trying to make a counter during iterations of trials. I've been using the code below. I want count, fillcount and expcount t...

10 years ago | 1 answer | 0

1

answer

Question


Adding element within vector without overwriting the existing value
Is there a way of inserting values at points within an existing vector/array without overwriting the existing value? So I hav...

10 years ago | 4 answers | 0

4

answers

Question


Combining cells so items occur randomly or pseudorandomly within a new array
I have two arrays of different sizes, and I want to insert items from one array into the other array for a specified number of s...

10 years ago | 1 answer | 0

1

answer

Question


Pick three numbers at random from a vector
How do you pick three numbers at random from a vector? So I have a=1:10, a1=a(1:2:end) and I want to select three numbers at ...

10 years ago | 1 answer | 0

1

answer

Question


Collecting a key press
I'm trying to collect key presses and I need to see which key they pressed but MATLAB keeps giving me the numerical code as oppo...

10 years ago | 1 answer | 0

1

answer

Question


Writing a function including text keep getting an error
Hi, I'm trying to write a function that plots a set of points. I wrote a script and it all worked fine, and now I'm in the ...

10 years ago | 1 answer | 0

1

answer

Question


How to display special types of symbols e.g. ♪ ?
Hi, I need to display a series of symbols that have alt/ascii codes (e.g. ♪) onto a plot. I can already do this with symbols...

10 years ago | 1 answer | 0

1

answer

Question


Iterative plotting with symbol change
Hi, I'm trying to do iterative plotting with each plot using a different symbol. The positions don't change, I just need to m...

10 years ago | 1 answer | 0

1

answer

Question


Plotting letters instead of symbols
Hi I'm really new to MATLAB and I'm generating images which are a set of 9 letters encased in a rectangle. I can do this with s...

10 years ago | 2 answers | 0

2

answers