Standard Number: BS 5678:1979, IEC 60402:1972 Title: Method (simplified) for pressure calibration of one-inch condenser microphones by the reciprocity technique Abstract: Describes a simplified method for pressure reciprocity calibration of condenser microphones for laboratory use. Status: Withdrawn Publication Date: 1978/12/29 Cross References: BS 5677, BS 5679, Withdrawn on: 1988/07/15 International Relationships: IEC 60402:1972 Identical Supersedes Draft: 78/24934 DC Descriptors: Microphones, Audio equipment, Acoustic equipment, Electronic equipment and components, Laboratory equipment, Calibration, Pressure, Sound intensity, Sensitivity, Testing conditions, Electrical measurement, Accuracy, Test equipment, Circuits, Dimensions