David Koenig
Last seen: 11 days ago
Corning Inc. (Retired)
44 total contributions since 2011retired control engineer.
Matlab author.
Jazz and classical music fan. Piano aficionado. Bridge enthusiast.
Professional Interests: simulation and analysis of sounds
David Koenig's Badges
Accept 20 answers given by other contributors
Awarded to David Koenig on 15 Aug 2018
Provide your first answer ever to someone else's question
Awarded to David Koenig on 20 Jul 2017
Question
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...
1 year ago | 1 answer | 0
1
answerQuestion
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...
1 year ago | 1 answer | 0
1
answerQuestion
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...
2 years ago | 0 answers | 0
0
answersQuestion
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...
2 years ago | 1 answer | 0
1
answerHow can I protect a public script from being changed?
Thanks to Adam and OCDER.
2 years ago | 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...
2 years ago | 2 answers | 0
2
answersQuestion
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 ...
4 years ago | 1 answer | 0
1
answerQuestion
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...
4 years ago | 1 answer | 1
1
answerQuestion
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 ...
5 years ago | 1 answer | 0
1
answerQuestion
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...
5 years ago | 0 answers | 0
0
answersQuestion
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 ...
5 years ago | 0 answers | 0
0
answersQuestion
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 ...
5 years ago | 1 answer | 0
1
answerQuestion
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 ...
5 years ago | 3 answers | 3
3
answersQuestion
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...
5 years ago | 0 answers | 0
0
answersQuestion
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....
5 years ago | 0 answers | 0
0
answersQuestion
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...
6 years ago | 0 answers | 0
0
answersQuestion
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...
6 years ago | 1 answer | 0
1
answerQuestion
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...
6 years ago | 2 answers | 0
2
answersQuestion
Reseverved Status for "CallInputString"?
Yesterday I downloaded R2013a. One of my scripts uses another script function named "CallInputString" defined as function y=C...
7 years ago | 0 answers | 0
0
answersQuestion
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.
7 years ago | 1 answer | 0
1
answerQuestion
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...
8 years ago | 1 answer | 0
1
answerQuestion
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 ...
8 years ago | 1 answer | 0
1
answerQuestion
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...
8 years ago | 0 answers | 0
0
answersQuestion
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 ...
8 years ago | 1 answer | 0
1
answerQuestion
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...
8 years ago | 1 answer | 1
1
answerQuestion
Can I Use the Special Function Keys to Interrupt a Script?
Back in the old QuickBasic and early Visual Basic days I would write code that allow me to interrupt a running algorithm by pres...
8 years ago | 2 answers | 0
2
answersQuestion
Is there a routine for recursive fft?
I have in my archives an article in the EDN magazine from September 29.1988 by a Tom Springer entitled "Sliding FFT computes fre...
8 years ago | 0 answers | 0
0
answersQuestion
Are there any Early Matlab Manuals left?
I started using Matlab circa 1989. My first copy was ver. 3.0 or 3.5 and all the routines fit on one 5.25 inch floppy disc. The ...
8 years ago | 1 answer | 2
1
answerQuestion
Fourth Order Hyperbolic PDE's
I have been struggling with trying to solve the vibrating plate equation in polar coordinates with angular dependence (non symme...
8 years ago | 1 answer | 0
1
answerQuestion
Using Matlab on Netbooks
To accompany me on trips I am considering getting a netbook and installing my Matlab on it. Has anyone had experience with using...
8 years ago | 2 answers | 0
2
answers
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