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"Thank you so much! I have received my new CD transferred from a very old 45rpm record. It is the accompaniment to a selection of trumpet solos that I loved playing 55 years ago! Simply listening to the CD by itself brought tears to my eyes, as I found I was also “hearing" my solos as well from memory. I’m practicing and will soon be back ..."

Directional characteristic

The variation in response for different angles of sound incidence. The polar response of a transducer.