Represents the perception and response of human hearing. Normalized for equal sound level throughout the audible frequency range. The scale is typically referenced to 1 kHz noise level.
luck, Brian -----Original Message----- From: Rob Keller [ mailto:[email protected]] Sent: Tuesday, April 13, 2004 12:10 PM To: [email protected] Subject: Acoustic Pressure Test Greetings, I had a client who was running the Acoustic Pressure Test described in UL/CSA 60950-01-03. The question he posed was concerning the A-wieghted sound that is suppose to be measured. He wondered what is the difference between an A-weighted sound and a non A-weighted sound. Does anyone have an answer?

