Physics at Our Favour · Oct 1, 2025 — The Digital Horn Diaries

I got to meet to work with one of my guys, and it was just terrific how the physical laws work in our favour — including in a closed space.

Fig. 01
Images of the works — the day's bench, the day's listeners.

This entry is to show the simulator and one of the examples. Basically comparing natural coverage vs. a directed approach. Fast in theory, this was the thing to look at:

Natural vs directed coverage — Fig. 02
First image: "natural" — all delay = gain = 0. Second image: a simple steering created using different delays on each source.

Measurements — up to 20 dB between positions — Fig. 03
Measurements. Position 1 vs Position 2, when the steering is done. Up to **20 dB** of difference.

Up to twenty decibels between two listening positions.

— from a simple delay table

I also measured the seriousness of it by capturing, one by one, each transfer function.

Per-source transfer function — sample 1 — Fig. 04
Each source — its own transfer function, captured alone.

Per-source transfer function — sample 2 — Fig. 05
Another source, another transfer function. The raw material of every algorithm.

Frontal versus sided.

Frontal (1) vs sided (2) coverage — Fig. 06
Frontal (1) versus sided (2) — in both situations. Red is the maximum of the "no-algorithm"; blue the minimum. Then we *opened the coverage*, and all the green curves settle inside those limits in a very linear way.

Sketch — a hand drawing from Tom — Fig. 07
Cool image — including a hand drawing from Mr. Tom. Regards.

More bench captures — Fig. 08
More captures from the bench.

Closing image — Fig. 13
The last picture of the day — enough.

Till next.
— Sebastián.

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Terrific, how it works.

Comparing natural vs. steered approach.

Frontal versus sided.