David Koenig
Corning Inc. (Retired)
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retired control engineer. Matlab author. Jazz and classical music fan. Piano aficionado. Bridge enthusiast. Professional Interests: simulation and analysis of sounds
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Question
How can I undock the command window?
I have just downloaded R2022b and am having troubles. (1) I can only keep one script window in the editor at a time. Is that a ...
presque 2 ans il y a | 1 réponse | 0
1
réponseQuestion
How do I remove old installations in broken down computers?
I have had a single-user Matlab license since 1989 (Matlab author since 2009) and, over the years, I have installed Matlab on ma...
presque 2 ans il y a | 2 réponses | 0
2
réponsesQuestion
How to find which of my computers have Matlab installed?
I buy a new computer every couple of years and I find that I can have Matlab installed on only a few computers. Can you tell me ...
plus de 2 ans il y a | 1 réponse | 0
1
réponseQuestion
Books on Matlab Symbolic
I bought my first Matlab in 1989 (a 5 inch floppy disc) and have been using it constantly ever since. Being a Matlab author I ge...
presque 3 ans il y a | 1 réponse | 0
1
réponseQuestion
Does it help to have more than 16 gb of memory?
I am buying a computer and I wonder if it makes sense to purchase extra memory. I do a lot of number crunchng on sound waves sam...
environ 3 ans il y a | 1 réponse | 0
1
réponseQuestion
How to use audio toolbox
Hello. I have audio toolbox and I am trying to cause my Yamaha P120 digital piano to produce the sound of a key strike by sendin...
plus de 5 ans il y a | 1 réponse | 0
1
réponseQuestion
How to extract information from sys
I would like to extract the coefficients in a discrete transfer function that I construct from a continuous transfer function. F...
plus de 5 ans il y a | 1 réponse | 0
1
réponseQuestion
How can I prevent the studdering initial sound when sound or soundsc is used?
When I feed a sine wave into sound or soundsc I get a ta-daaa at the beginning and the tone comes through as expected. It is int...
environ 6 ans il y a | 1 réponse | 0
0
réponseQuestion
How to use webread to download numerical data
Hello. I have data in the form of .mat files in a folder in my Boxnet account. I would like to use a Matlab script to read those...
plus de 6 ans il y a | 1 réponse | 0
1
réponseHow can I protect a public script from being changed?
Thanks to Adam and OCDER.
plus de 6 ans il y a | 0
Question
How can I protect a public script from being changed?
I write scripts that I would like other Matlab users to run but I do not want them to be able to modify it. Is there a way to pr...
plus de 6 ans il y a | 2 réponses | 0
2
réponsesQuestion
How to keep Matlab going on a long calculation?
I run simulations, some of which take on the order of 90 minutes. If I get one started and walk away to do other things, I find ...
plus de 8 ans il y a | 1 réponse | 0
1
réponseQuestion
How can I get the Mastering Matlab Toolbox
In "Mastering Matlab" by Hanselman & Littlefield there is a reference to the Mastering Matlab Toolbox that contains several scri...
presque 9 ans il y a | 1 réponse | 1
1
réponseQuestion
Why doesn't mp3write work in R2015b but it does in R2013b?
When I try to use mp3write in R2015b I get Error using wavwrite (line 8) WAVWRITE will be removed in a future release. Use ...
presque 9 ans il y a | 1 réponse | 0
1
réponseQuestion
How to change the Date and Time of a Saved Script?
On older versions, when I saved a script it kept the most recent time and date. This allowed me to easily use Windows Explorer t...
presque 9 ans il y a | 1 réponse | 0
0
réponseQuestion
How long does it take to transfer a mat file to the cloud?
To use Matlab mobile I have uploaded a couple of scripts to the Matlab cloud and have been able to run them successfully. There ...
plus de 9 ans il y a | 1 réponse | 0
0
réponseQuestion
Can I add toolboxes to Matlab Home Later On?
Q1: I am a Matlab author and have used Matlab extensively in my two books. Now that I am aware of Matlab Home I want to know if ...
plus de 9 ans il y a | 1 réponse | 0
1
réponseQuestion
How can I get rid of the yellow background?
While editing a script I inadvertently clicked something that caused a yellow background for the script and also added comments ...
presque 10 ans il y a | 4 réponses | 3
4
réponsesQuestion
Do I need R2014B for this?
I need to find out which toolboxes my scripts need so that I can know whether Matlab Home will work. Does [fList, pList] = ma...
presque 10 ans il y a | 1 réponse | 0
0
réponseQuestion
Can I Activate audiorecorder or recordblocking by Sound Level?
I am trying to use audiorecorder and recordblocking for tuning a piano and I would like to start collecting when I strike a key....
presque 10 ans il y a | 1 réponse | 0
0
réponseQuestion
How to calculate modal density?
Can you point me to a script that calculates the modal density of a time series? Is there a reference that would show how to cal...
environ 10 ans il y a | 1 réponse | 0
0
réponseQuestion
How Can I Speed up a loop that solves a pde?
Hello, I am solving the 4th order pde for plate vibration and after discretizing the pde and solving for W(x,y,t) or W(k,m,n...
environ 10 ans il y a | 1 réponse | 0
1
réponseQuestion
Pausing in Matlab Mobile
I am trying to convert my scripts so that I can run them on my iPad. Most of my scripts generate many figures and have pauses af...
plus de 10 ans il y a | 2 réponses | 0
2
réponsesQuestion
Reseverved Status for "CallInputString"?
Yesterday I downloaded R2013a. One of my scripts uses another script function named "CallInputString" defined as function y=C...
plus de 11 ans il y a | 1 réponse | 0
0
réponseQuestion
Can a text statement be put on a contour plot?
I have tried putting text(40, 50, 'comment') after a contour plot without succcess. Is there something I am missing? Thanks.
plus de 11 ans il y a | 1 réponse | 0
1
réponseQuestion
Bold Titles when using menu
Hello, I am using menu and, based on a previous Matlab Answers post, I am able to choose the font (Arial Rounded MT Bold) but...
presque 12 ans il y a | 1 réponse | 0
1
réponseQuestion
Starting a Loop over again
If I am in a while/end loop and I find that I have a mistake and want to get out of the loop and start the loop over again, how ...
presque 12 ans il y a | 1 réponse | 0
1
réponseQuestion
Does repeated use of ngrid suck up memory?
I calculate a 60,000 by 1000 grid using Matlab's ngrid function. While staying in the same script I often have to recalculate th...
environ 12 ans il y a | 1 réponse | 0
0
réponseQuestion
How can I connect Matlab to Accelerometers?
I would like to use my Matlab to read the outputs of accelerometers. Are there products available that would allow me to use my ...
environ 12 ans il y a | 1 réponse | 0
1
réponseQuestion
Is it possible to update two different graphs?
I want to have a time loop going that generates a snapshot of a vibrating string and on a different figure a snapshot of a vibra...
plus de 12 ans il y a | 1 réponse | 1