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This section specifies the general requirements for audiometers and the specific requirements for pure tone audiometers designed by comparing them with the standard reference threshold level using psychoacoustic testing methods. The purpose of this section is to ensure that: a) different audiometers that meet the requirements of this section are used. According to the methods described in GB/T 16403 and GB/T 7583、 a hearing test is conducted on the designated human ear within the range of 125Hz~8kHz. Especially for the hearing valve test、 the results should be basically the same: the obtained results represent an effective comparison between the hearing of the test ear and the reference hearing width; c) Audiometers are classified based on the complexity of their generated test signal range、 operating mode、 or tested auditory function range. 2 Normative References: The clauses in the following documents are referred to in this part of GB/T 7341. For dated reference documents、 all subsequent amendments (excluding corrected content) or revisions are not applicable to this section. However、 parties who have reached agreements based on this section are encouraged to study whether new versions of these documents can be used. For undated references、 the new version of * applies to this section. GB/T 3785.1 Electroacoustic Sound Level Meters - Part 1: Specifications (GB/T 37851) 1-2010. IEC 61672-1: 2002. IDT) GB/T 4854.1 Reference zero level for audiometric equipment in sound schools - Part 1: Reference equivalent threshold sound pressure level for pure tones of pressure earphones (GB/T 4854) 1-2004. ISO 389-1: 1998、. IDT) GB/T 4854.3 Reference zero level for audiometric equipment in sound schools - Part 3: Reference equivalent national strength level for pure tones of bone vibrators (GB/T 4854) 3-1998 Eqv ISO 389-3; 1994) GB/T 4854.4-1999 Reference zero level for sound school standard listening equipment - Part 4: Reference level for narrowband masking noise (idtISO 389-4:1994) GB/T 4854.7 Reference zero level for sound school standard listening equipment - Part 7: Reference hearing group for free field and diffusion field listening (GB/T 4854 7-1999.idt ISO 389-7:1996) GB/T 4854.8 Reference zero level for audiometric equipment in schools of sound. Part 8: Reference equivalent threshold sound pressure level for pure tones of earmuff earphones (GB/T 4854 8-2007、 ISO 389-8:2004. IDT) GB/T 7341.2 Audiometers - Part 2: Recitation audiometry equipment (GB/T 7341 2-1998. idt IEC 60645-2: 1993) GB/T 7583 Acoustics - Determination of pure tone air conduction - Hearing protection (GB/T 7583 1987、 eqv IS0 6189; 1983) GB/T 7584.1 Acoustics - Hearing protectors - Part 1: Subjective method for measuring sound attenuation (GB/T 7584 1-2004. ISO4869-1: 1990、 IDT) GB/T 9001 Measurement Methods for Audio Amplifiers (GB/T 9001-1988、 eqv IEC 60268-3:1983) GB/T 9706.1 Medical Electrical Equipment - Part 1: General Requirements for Safety (GB/T 9706 1-2007、 IEC 60601-1:1988+A1: 1991+A2:1995. IDT) GB/T 15951 Measurement of Force Couplers for Bone Vibration Devices (GB/T 15951-1995、 idt IEC 60373: 1990) GB/T16296 Acoustic Audiometry Methods - Part 2: Audiometry Using Pure Tone and Narrowband Test Signals (GB/T16296-1996、 eqv ISO 8253-2: 1992)
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