DemAudio Technical Blog

This blog is part of the DemAudio website — so yes, it is also a commercial showcase. I make no secret of that. What it is more precisely is a mix of three things:

• LinFIR tutorials. Step-by-step guides for using LinFIR, the linear-phase loudspeaker system design and optimisation software I develop. (Coming soon.)

• Technical articles on acoustics and audio DSP. Topics I find genuinely interesting: FIR crossovers, acoustic measurement methodology, propagation physics, directivity, system design practices. Written because the subject is worth writing about, not to fill a content calendar.

• Opinion and criticism. The professional audio industry occasionally publishes specifications, claims, or practices that are technically indefensible. When that happens and I have something precise to say about it, I say it here. The criticism is always grounded in numbers and physical models, not in brand loyalty or commercial interest.

Content is added as it gets written: this is a work in progress, not a finished publication.

A note on how these articles are written

I write with the help of large language models as editorial assistants, they help me turn structured notes into readable prose. The ideas, the calculations, and the physical reasoning are mine. I check the maths. I own the errors.

If you find a mistake — a wrong sign, a questionable assumption, an imprecise claim — please write to me. I have no attachment to being right; I have a strong attachment to being accurate. A correction is more useful than a compliment.

Last update: May 2026