GB/T 15951-1995 (English Version) PDF

Standard No.: GB/T 15951-1995
Language: Chinese, Available in English version
Release Date: 1995
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 15951-1995

Scope: This standard specifies the requirements for force couplings. The force coupler is used in the frequency range of 125Hz to 8000Hz for calibrating bone conduction audiometers, measuring bone vibrators (bone conduction earphones) and measuring bone conduction hearing aids. This standard is used for audiometry, and its purpose is to provide a calibration method for bone vibrators used in bone conduction audiometry by specifying the standard force impedance loaded on the vibrator and the device for measuring the alternating force generated. GB 11669 specifies the corresponding The reference equivalent hearing threshold level of normal hearing threshold. For this reason, according to the regulations in GB 7341, the bone conduction vibrator requires a flat dome with an area of 175±mm², and a static force of 5.5N±0.5N acts on the force coupler. The force coupler It can also be used for frequency response of audiometer bone vibrator, unwanted sound radiation, harmonic distortion and other measurements. The purpose of this standard for drawing hearing aids is to measure the electromechanical characteristics (sensitivity, frequency response, harmonic distortion, etc.) of bone vibrators used in hearing aids; When the static force in the range of 1.7N ~ 4N is added, the sound-force characteristic of the whole bone conduction hearing aid is measured.

GB/T 15951-1995 history