michael/ProdDash
1
0
Fork 0
Code Issues Pull Requests 3 Actions Packages Projects Releases 1 Wiki Activity

SPL Meter: measure the room, not just watch it #10

Merged
michael merged 7 commits from claude/spl-meter-module into main 2026-09-17 16:18:17 -04:00
Conversation 0 Commits 7 Files Changed 7
+5 -1
1 changed files with 5 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
Showing only changes of commit 46d44d494b - Show all commits
modules/spl-meter/spl-capture.swift
+5 -1
View File
@@ -253,7 +253,11 @@ let bandN1 = 207 // ≈ 20 kHz
let bandCentres: [Double] = (bandN0...bandN1).map { 1000 * pow(2, Double($0) / 48) } let bandCentres: [Double] = (bandN0...bandN1).map { 1000 * pow(2, Double($0) / 48) }
/// FFT bin ranges per band, clamped to what the transform can actually /// FFT bin ranges per band, clamped to what the transform can actually
/// resolve. Below roughly 200 Hz a 1/48-octave band is narrower than one /// resolve.
///
/// This is the one caveat a reader of the RTA needs and the gear is not
/// allowed to carry (module rule 5, no explanatory text in a tile's
/// settings): below roughly 200 Hz a 1/48-octave band is narrower than one
/// bin, so neighbouring bands start sharing bins and the low end reads /// bin, so neighbouring bands start sharing bins and the low end reads
/// smoother than it really is. That is the window length talking, not the /// smoother than it really is. That is the window length talking, not the
/// room. Folding to 1/6 or 1/3 puts it right, and a multi-resolution /// room. Folding to 1/6 or 1/3 puts it right, and a multi-resolution