I am trying to measure/verify speaker delays and I'm getting strange results.
I have the recommended setup from the manual with a sound card. Right line out of the sound card goes to both the sound card left line in, and to the center channel analog AVR input. A RS SPL meter connects to the sound card right line in.
I have "loopback as timing reference" checked in Analysis. I set all of my speaker distances to 3ft (the min i can set it).
I made a measurement with the RS SPL meter as close to the center speaker as I could get, looked at the impulse response. I got 4.5 ms. I then I moved the RS SPL meter back about 3 ft, and measured again and got 7 ms, as I should. So this made me think I'm doing it correctly.
Now for the strange part, regardless of how I change the distance settings in the AVR, the measured delay does not change. I have tried 3 ft, and 30 ft. for the center speaker, and 3ft and 30 ft for other speakers (while still testing the center). I also tried testing the right speaker with the same result.
Now my AVR is ancient, c 2004., and has HDMI 1.0, but I was using analog inputs (for this test only). I use the optical digital SPDIF when using it for movies (I know, its time to upgrade). Is it possible that delays are only applied to digital inputs? Or am I doing something wrong.
Sorry if this has been addressed a million times already.
I have the recommended setup from the manual with a sound card. Right line out of the sound card goes to both the sound card left line in, and to the center channel analog AVR input. A RS SPL meter connects to the sound card right line in.
I have "loopback as timing reference" checked in Analysis. I set all of my speaker distances to 3ft (the min i can set it).
I made a measurement with the RS SPL meter as close to the center speaker as I could get, looked at the impulse response. I got 4.5 ms. I then I moved the RS SPL meter back about 3 ft, and measured again and got 7 ms, as I should. So this made me think I'm doing it correctly.
Now for the strange part, regardless of how I change the distance settings in the AVR, the measured delay does not change. I have tried 3 ft, and 30 ft. for the center speaker, and 3ft and 30 ft for other speakers (while still testing the center). I also tried testing the right speaker with the same result.
Now my AVR is ancient, c 2004., and has HDMI 1.0, but I was using analog inputs (for this test only). I use the optical digital SPDIF when using it for movies (I know, its time to upgrade). Is it possible that delays are only applied to digital inputs? Or am I doing something wrong.
Sorry if this has been addressed a million times already.