2024-11-21 18.224.59.107
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Code of China
Chinese National Standard List: Electroacoustic device

GB/T 11454-1989 Magnetic field strength in audio-frequency induction loops for hearing aid purposes 
  Issued on: 1989-06-02   Price(USD): 180.0
GB 11455-1989 Hearing aid equipment not entirely worn on the listener 
  Issued on: 1989-06-02   Price(USD): 45.0
GB 11453-1989 Methods of measurement of performance characteristics of hearing aids under simulated in situ working conditions 
  Issued on: 1989-7-4   Price(USD): 120.0
GB/T 11452-1989 Guide to hearing aid standards 
  Issued on: 1989-06-02   Price(USD): 240.0
GB/T 10240-1988 Specifications for the editing and production of prog-ramme source for subjective assessment of sound quali-ty of electro-acoustic products 
  Issued on: 1988-12-30   Price(USD): 90.0
GB 7614-1987 An artificial ear of wide band type for the calibration of earphones used in audiometry 
  Issued on: 1987-04-02   Price(USD): 60.0
GB 6832-1986 Methods of measurement on headphones 
  Issued on: 1986-9-3   Price(USD): 210.0
GB 3661-1983 Technical specification of measurement condenser microphones 
  Issued on:   Price(USD): 260.0
GB 3662-1983 Methods for determining electroacoustic characteristics of measurement condenser microphones 
  Issued on:   Price(USD): 130.0
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