Who is Z transform?

[Z transform]

Hello from upstate NY. (For those not familiar with NY geography- up here we have diary farms, apple orchards, vineyards, many lakes, rolling hills & Adirondack peaks, the Erie canal, industry old & new, and high taxes.)

I've been lurking for a while, but thought I should introduce myself. I have been away from my audio hobby since the 70s when I built many loudspeakers, sub-woofers, active crossovers, solid state amps and a high voltage direct drive valve stage for running some Janzen electrostatic panels. I dropped my audio hobby during graduate school, but am looking to return.

The last 25 years have been spent perfecting digital servo controls based upon DSP technology. (Hence the Z transform moniker.) I am a HW engineer at heart and can work at the chip, board or valve level. I have become pretty adept at switching power conversion and comfortable with magnetics. Although I have done much DSP algorityym design, it's all been at the signal flow diagram level- I don't code per se. At work I have also worked on sheet metal, extrusions, castings, molded parts, a tiny bit of optics and much mechanical design for servo axes. I mostly supervise now and miss getting my hands dirty, so that's what's motivating me to look at reviving my audio hobby.

My audio interests include: Valve amps, loudspeakers (electrostatic and other dipoles), DSP crossovers and DSP loudspeaker correction.

Still trying to select a project. I started work on a non-bootstrapped low distortion valve driver stage for a unity coupled (McIntosh) amp and finished simulations, but now have been strangely drawn back to loudspeakers. If only I had more time. We'll see where it goes...

Thanks to all those who selfishly give their time to make information available here and on other forums.

Tom

[planet10]

Welcome to the forum.

25 years have changed a lot of things in audio, as well as remined us of how advanced some of the old stuff is.

You should fit right in applying your skill-set to hifi.

dave

[Z transform]

Thanks for the welcome!

I have not got any traction on my Loudspeaker CAE thread that I posted in the Software Tools forum (here). Should I have posted it under Loudspeakers: Multi-way? I don't know the etiquette concerning posting under multiple forums. I suspect that it would get a lot more attention there. Can you move it for me? Should I just post a duplicate there?

Please let me know.