SIS SS IEC 655:1986 Acoustics — Values for the difference between free-field and pressure sensitivity levels for one-inch standard condenser microphones
This standard gives values for the difference between free-field and pressure sensitivity levels for one-inch standard condenser microphones.
SIS SS IEC 655:1986 history
1986SIS SS IEC 655:1986 Acoustics — Values for the difference between free-field and pressure sensitivity levels for one-inch standard condenser microphones