From 2346cd7a4c7864ca65718905717adf82e2696ff2 Mon Sep 17 00:00:00 2001
From: Mike Brady <4265913+mikebrady@users.noreply.github.com>
Date: Mon, 20 Jul 2026 11:48:18 +0100
Subject: [PATCH] Update convolution comments in the configuration file. [skip
 ci]

---
 scripts/shairport-sync.conf | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/scripts/shairport-sync.conf b/scripts/shairport-sync.conf
index 21ddd599..647cc58b 100644
--- a/scripts/shairport-sync.conf
+++ b/scripts/shairport-sync.conf
@@ -299,16 +299,19 @@ ao =
 dsp =
 {
 //////////////////////////////////////////
-// This convolution filter can be used with inpulse responses files
+// This convolution filter can be used with finite impulse response (IR) files
 // to apply almost any correction to the audio signal, like frequency and phase correction.
 // For example you could measure (with a good microphone and a sweep-sine) the frequency response of your speakers + room,
 // and apply a correction to get a flat response curve.
 // Long impulse response files require lots of floating-point processing!
+//
+// Convolution is applied to each output channel at the output rate.
+//   Thus, your IR files must match the output rate and match the output channel count or are mono.
 //////////////////////////////////////////
 //
 //      convolution_enabled = "no";                // Set this to "yes" to activate the convolution filter.
 //      convolution_thread_pool_size = 1;          // Number of CPU threads that can work on convolution at the same time.
-//      convolution_ir_files = "<comma-separated list of full path names to impulse response files, for sample rates of 44100 and 48000 -- stereo or mono only>";
+/      convolution_ir_files = "<comma-separated list of full path names to impulse response files, with sample rates that match output rates and with channel counts that match output channel counts or are mono>";
 //      convolution_gain = -4.0;                   // Static gain applied after convolution, between -60 and +18 dB. Useful for preventing clipping or amplifying low convolution output levels
 //      convolution_max_length_in_seconds = 1.0;   // Truncate the input file to this length in order to save CPU.
 //