When I was first wrapping my head around spinoramas, I had some trouble understanding the balance between the audibility of direct sound, early reflections, and sound power. I think this simple image from section 10.3 of the book really helped things click.
Most of us know that the higher the frequency, the more the direct sound matters, but I thought this made the balance of things more intuitive. Obviously, the balance will also be different for listening in the nearfield, where direct sound will take precedence over a larger range of frequencies. The above diagram reflects both the typical radiation patterns of speakers and typical absorption patterns of rooms.
Just something I thought I'd share that might make it a bit easier to interpret on and off-axis data as Amir starts measuring speakers and more people pay attention to speaker measurements.
Most of us know that the higher the frequency, the more the direct sound matters, but I thought this made the balance of things more intuitive. Obviously, the balance will also be different for listening in the nearfield, where direct sound will take precedence over a larger range of frequencies. The above diagram reflects both the typical radiation patterns of speakers and typical absorption patterns of rooms.
Just something I thought I'd share that might make it a bit easier to interpret on and off-axis data as Amir starts measuring speakers and more people pay attention to speaker measurements.