A graph of a transducer’s directional sensitivity, measured over a 3600 circumference drawn around the transducer. See Polar Pattern, Loudspeaker, and Polar Pattern, Microphone.
"I am very happy with the how my CDs turned out. I sent you an old LP with quite a bit of sentimental value, and I have to confess that I was a little worried, but it came back just fine and the CDs sound great. Many thanks."