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Chinese National Standard List: Acoustic Measurement

JJF 1272-1990 O.T.N. of Free-field Sound Pressure Primary Standard in Air 
  Issued on: 1990-1-1   Translation Price(USD): 100.0
JJF 1279-1990 O.T.N. of the Secondary Standard for the Ultrasonic Power of Milliwatt Level 
  Issued on: 1990-1-1   Translation Price(USD): 224.0
JJF 1270-1990 O.T.N of the Secondary Standard for Coupler Reciprocity Method Acoustical Pressure 
  Issued on: 1990-1-1   Translation Price(USD): 184.0
JJF 1278-1990 O.T.N. of Primary Standard for Milliwatt Level Ultrasonic Power 
  Issued on: 1990-1-1   Translation Price(USD): 184.0
JJF 1280-1990 O.T.N. of the Primary Standard for Audiometric Zero Level of Air Conduction 
  Issued on: 1990-1-1   Translation Price(USD): 184.0
JJF 1277-1990 O.T.N.of the Secondary Standard for the Ultrasonic Power of Watt Level 
  Issued on: 1990-1-1   Translation Price(USD): 224.0
JJF 1273-1990 ~ 
  Issued on: 1990-1-1   Translation Price(USD): 184.0
JJF 1275-1990 ~ 
  Issued on: 1990-1-1   Translation Price(USD): 184.0
JJF 1269-1990 O.T.N. of the Primary Standard for the Sound Pressure of Reciprocity Technique 
  Issued on: 1990-1-1   Translation Price(USD): 184.0
JJF 1276-1990 O.T.N of Primary Standard for Watt Level Ultrasonic Power 
  Issued on: 1990-1-1   Translation Price(USD): 184.0
JJG (电子) 12037-1991 DF-5990A Type Loudspeaker Resonance Frequency Gauge (Trial Implementation)  
  Issued on:   Translation Price(USD): 75.0
JJG 639-1998 Verification Regulation of Ultrasonic Source for Medical Ultrasonic Diagnostic Equipment 
  Issued on: 1998-09-16   Translation Price(USD): 280.0
GB/T 7341.2-1998 - Part 2: Equipment for speech audiometry 
  Issued on: 1998-5-8   Translation Price(USD): 180.0
GB/T 7341.1-1998 Audiometers. Part 1: Pure-tone audiometers 
  Issued on: 1998-05-08   Translation Price(USD): 270.0
GB/T 7341.3-1998 - Part 3: Auditory test signals of short duration for audiometric and neuro-otological purposes 
  Issued on: 1998-5-8   Translation Price(USD): 120.0
GB/T 7341.4-1998 - Part 4: Equipment for extended high-frequency audiometry 
  Issued on: 1998-5-8   Translation Price(USD): 120.0
GB/T 17247.2-1998 Acoustics - Attenuation of sound during propagation outdoors - Part 2: General method of calculation 
  Issued on: 1998-3-18   Translation Price(USD): 300.0
JJG 175-1998 Verification Regulation of Measuring Condenser Microphones 
  Issued on: 1998-03-16   Translation Price(USD): 220.0
GB/T 17252-1998 Acoustics - Characteristics and measurements of ultrasonic piezoelectric transducers up to 100 kHz 
  Issued on: 1998-3-18   Translation Price(USD): 150.0
GB/T 4854.3-1998 Acoustics-Reference zero for the calibration of audiometric equipment-Part 3: Reference equivalent threshold force levels for pure tones and bone vibrators 
  Issued on: 1998-03-18   Translation Price(USD): 180.0
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