Buon Natale!

Merry Christmas!

How are you?
I did not have big progress in loudspeaker technology development.
I am creating my software document with all variable lists, used equations and algorithms.
Document will be the most important to leave the record of research and development.
I create the first detailed document, then begin to revise the program.

I wish you Merry Christmas and a Happy New Year!

Shigeru

Message form is now available

Massage form has been created.
Send any private messages to me!
Any feedback is appreciated.

Project MCAP-CR

Released: Loudspeaker Simulator with Fourier Transform

New Loudspeaker response simulator with Fourier Transform was released.
This is revision 1.0. Though it is character user interface (CUI) version, but function is powerful.
New simulator is applicable to buffle, closed enclosure, bass-reflex enclosure, double bass-reflex enclosure, and standard MCAP-CR enclosure with up to 12 subchambers!

Just to edit input parameter file, and run the simulator program from command prompt, then simulation results are generated as csv files.
You may make plots, if you use spreadsheet software like (LibreOffice Calc, Microsoft Excel, etc.)

Here is an example of simulation result. It is plotted by LibreOffice Calc.

Below is the list of distributed files.

Here is the input file. Just to edit this file and rung the executable, then results are generated as text file.

You can compile the source file.
Linux 64bit executable compiled by GCC runs much faster than Windows 32bit executable!

See software page. Everyone can download the software without limitation.
This version is listed as code003E.

User's Guide is now attached to simulator

User's guide is now attached to simulation softwae.
This software can simulate single & double bass-reflex, and standard MCAP-CR up to three subchambers!

Try it and give me your feedback!

Download Page

Information of QNDR System is added

Information of QNDR System is released.
QNDR details had been released ago but in Japanese only.
Now you will see my web page.

See Project MCAP-CR.

Web site renewed

Multiple Degree of Freedom Cavity Resonator Loudspeaker page is renewed.
Old pages are archived and you can as well as view again.

Update will be done on renewed pages only.

Visit Project MCAP-CR.

Restructuring in progress

Multiple-Degree of Freedom Cavity Resonator Project page is being restructed.
Currently temporary page is placed as:
http://mcap.web.fc2.com/indexe.html
It is under construction but please visit it. You will not get hurt.

Restructuring MCAP-CR Website

I will begin restructuring my website.
My website may have been too much technical for most readers.
I am reorganizing the site design first, but it is not enough for restructuring.

Please keep in touch!

Multiple-Degree of Freedom Cavity Resonator Project

Minor Change GUI

More than one year have passed since MCAP-CR simulator CUI version was released.

I recently released minor change version with Windows Binary Executable file.

New function is:
Number of sub-chambers is not limited to 3 but 1, 2 or 3. You can now use this simulator to double-bass-reflex systems and also single-bass-reflex systems. For single-bass-reflex systems, increase volume of sub-chamber up to maximum (now 10 cubic-meters).

This is just small change. In the next release, dumping coefficient can be set from GUI. Now one who can handle C language can modify source code and make damping coefficients adjustable, but original code sets all damping coefficients be zero.

Enjoy simulator!


Multiple-Degree of Freedom Cavity Resonator Project

Simulator for Windows x86 Executable version available

Windows Executable version of MCAP-CR Simulator with GUI is now available.

Goto reference page and see bottom of the page.

This is same as source package but you do not have to compile the source code.
It was tested on Windows 7(64bit) and Windows XP(32bit).
Source code was compiled by 64bit machine, but MinGW and Qt SDK was 32bit version, so that executable works with both 64bit and 32bit Windows OS.


Multiple-Degree of Freedom Cavity Resonator Project

MCAP-CR Simulator with GUI now available!

MCAP-CR Simulator with nice GUI is now available!
This is still preliminary version, but good to play with.
Try this!

Source code is available below (see code002E, bottom of page):
http://mcap.web.fc2.com/References.html#programs

You need to have Qt SDK (and MinGW in Windows system) installed.
Software code can be compiled with Linux and Windows OS.

Please give me your input for future release!


Multiple-Degree of Freedom Cavity Resonator Project

Prerelease GUI Simulator Comming soon

I am now developing MCAP-CR simulator in GUI format.
C++ source code for CUI was released last year, but I had requests for GUI format.
I got help from Mr. Osako through Japanese Blog page. He is real programmer but not loudspeaker developer.
He gave me sample GUI program and I am modifying the sample for preferred use.
Prerelease version is ready to go.

I am now preparing for distribution, but I found that just executable file does not work with Windows system, while Linux system looks fine.

I expect it will be available in this week.


Multiple-Degree of Freedom Cavity Resonator Project