diff --git a/internal/flinger/flinger.go b/internal/flinger/flinger.go
index bf9cdc5..7fb7ff5 100644
--- a/internal/flinger/flinger.go
+++ b/internal/flinger/flinger.go
@@ -219,6 +219,10 @@ func (e *Engine) Status() Status {
 // audioLoop reads raw PCM and emits WAVE packets. start is the shared
 // reference clock used by the video loop so audio and video timestamps stay
 // aligned on the receiver.
+//
+// The PipeWire capture negotiates interleaved signed 16-bit stereo at 48 kHz
+// (the teleportfling stream's negotiated Format is S16LE), which is exactly
+// what the WAVE packets carry.
 func (e *Engine) audioLoop(src io.ReadCloser) {
 	defer func() { _ = src.Close() }()