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"The CDs and cassette tapes I ordered arrived yesterday. Thank you! I was amazed at the clarity you were able to produce from a 36-year-old reel-to-reel tape. Again, thanks! I think my grandmother, father, and uncles will be very happy to be able to listen, once again, to the tribute to my grandfather from so long ago. God bless."


Science of production, transmission, reception, and effects of sound. Also, in a room or other locations, those characteristics that control reflections of sound waves, and thus the sound reception in the room.