I have been looking into some software tools to model small speakers with embedded DSP. The emphasis is to figure out how to "get the most" from very small boxes with passive radiators. I wanted to simplify the user interface so you wouldn't have to type in those T-S parameters or have a local database of T-S data, so I used a cut and paste approach to scrape the data from existing web sites.
Here is a video showing how it works: http://www.audiodevelopers.com/temp/ASD/Capture02.mp4
The code defaults to the loudspeaker.com database, which has become a very good and well maintained resource.
The Box Modeler code is the "translated" version of Jeff B's Woofer Box and Circuit Designer Excel spreadsheet. It's a nice model that includes passive radiators and good models for the box "Q" parameters.
I had disabled the Bluetooth interface to the DSP for that video and went back and added a clip that shows the DSP real-time control. The Android controller is more polished right now, but with the PC you can see all of the functions on one screen, which is nice:
http://www.audiodevelopers.com/temp/ASD/Capture05.mp4
Here is a video showing how it works: http://www.audiodevelopers.com/temp/ASD/Capture02.mp4
The code defaults to the loudspeaker.com database, which has become a very good and well maintained resource.
The Box Modeler code is the "translated" version of Jeff B's Woofer Box and Circuit Designer Excel spreadsheet. It's a nice model that includes passive radiators and good models for the box "Q" parameters.
I had disabled the Bluetooth interface to the DSP for that video and went back and added a clip that shows the DSP real-time control. The Android controller is more polished right now, but with the PC you can see all of the functions on one screen, which is nice:
http://www.audiodevelopers.com/temp/ASD/Capture05.mp4
It's still got a ways to go before getting published, but yes, it will be a free download.
The setup program will be at: Page not found – Audiodevelopers Reborn
The DSP board that is referenced in the second video is the stereo 3-way board described in this article. I probably won't publish this code until the Rev 5 board is working, because I want to make sure the Wi-Fi control interface gets done. It's mostly built up, but lots of Arduino code still to get working...
The setup program will be at: Page not found – Audiodevelopers Reborn
The DSP board that is referenced in the second video is the stereo 3-way board described in this article. I probably won't publish this code until the Rev 5 board is working, because I want to make sure the Wi-Fi control interface gets done. It's mostly built up, but lots of Arduino code still to get working...