gramps/ytLlive
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

TASK 8 meter scaling: +10 dB input amplification in AudioLevelMeter.ToDisplay so the meters use the full bar — speech peaks (~0.2 RMS, -14 dBFS) read ~0.93 (red zone) and normal speech (~0.05, -26 dBFS) ~0.73 (yellow) at maxed volume, instead of hovering at the red edge; ≤0.001 linear still reads zero so the meter never idles on background noise; one knob shared by the mic bar and the game bar (× MicVolume gain-on-noise untouched); tests updated + new ToDisplay_Pushes_Speech_Peaks_Into_Red_At_Maxed_Volume — 171 tests passing, 0 warnings

Browse Source
This commit is contained in:
Llama Chile Shop
2026-08-14 08:43:06 -07:00
parent d90b5ded0d
commit 0b71b030e4
7 changed files with 53 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files
Services/Audio/AudioLevelMeter.cs
+7 -4
View File
@@ -15,15 +15,18 @@ public sealed class AudioLevelMeter
/// <summary>
/// Maps a linear level (0..1) onto the meter's display scale: -60 dBFS..0 dBFS
/// spread linearly across 0..1. Linear RMS of real speech or game audio is
/// ~0.01..0.1 (-40..-20 dBFS), which leaves a flat (linear) meter looking
/// dead; the log scale makes typical levels occupy the bar.
/// spread linearly across 0..1, with +10 dB of input amplification. Linear RMS
/// of real speech or game audio is ~0.01..0.1 (-40..-20 dBFS), which leaves a
/// flat (linear) meter looking dead; the log scale makes typical levels occupy
/// the bar and the amplification pushes real speech peaks into the red zone
/// (0.8+) at maxed volume instead of hovering at its edge. Inputs at or below
/// -60 dBFS (0.001 linear) read as zero — the meter never idles on background noise.
/// </summary>
public static float ToDisplay(float linear)
{
if (linear <= 0.001f)
return 0f;
var db = 20f * MathF.Log10(linear);
var db = 20f * MathF.Log10(linear) + 10f;
return Math.Clamp(1f + db / 60f, 0f, 1f);
}