: Set player to Bitstream (not PCM) over HDMI. Set AVR to Direct or Pure mode to bypass upmixing. 6. Sample 5.1 Test File (FFmpeg command) If you need a custom test tone file (60 sec, 48 kHz AC3):
ffmpeg -f lavfi -i "aevalsrc=0.5*sin(2*PI*1000*t):channel_layout=5.1[sL]" -map 0:0 -c:a ac3 -b:a 640k test_5.1.ac3 (Full 6-channel separation requires separate pan filters – use a pre-made WAV or AC3 from above sources for simplicity.) Would you like a ready-to-use or a script to generate one with precise channel mapping? surround sound 5.1 test