GB/T 3785.1-2010
Electroacoustics-Sound level meters- Part 1:Specifications (English Version)
- Standard No.
- GB/T 3785.1-2010
- Language
- Chinese, Available in English version
- Release Date
- 2010
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Status
- 2023-12
- Replace By
- GB/T 3785.1-2023
- Latest
- GB/T 3785.1-2023
- Replace
- GB/T 17181-1997 GB/T 3785-1983
- Scope
- 1.1 This part gives the electro-acoustic performance specifications for the following three types of sound measuring instruments: - conventional sound level meters for measuring exponential time-weighted sound levels; - integral average sound level meters for measuring time-averaged sound levels; - measuring sound exposure levels integrated sound level meter. A single instrument can perform any or all three of the above measurements. Maximum time-weighted sound level measurements and peak C sound level measurements are given as additional performance requirements. All sound level meters specified in this part must have A frequency weighting. 1.2 A sound level meter complying with this standard shall have a specified frequency response when the sound is incident on the microphone from a reference direction or a random direction in a free sound field. 1.3 The sound level meter specified in this part is used to measure the sound within the range of human hearing. 1.4 This part stipulates that sound level meters are divided into two levels according to their performance: level 1 and level 2. Generally, the specifications for Class 1 and Class 2 sound level meters have the same design goals, mainly with different tolerance limits and operating temperature ranges. Class 2 specifications have tolerance limits greater than or equal to Class 1 specifications. 1.5 This section applies to various forms of sound level meters. A sound level meter may be a hand-held instrument that itself contains a microphone and a display, or it may consist of one or more separate components that display various sound signal levels. Sound level meters can include extended analog and digital signal processors, which can be separate or combined, and can have multiple analog and digital outputs. A sound level meter may include a general purpose computer, recorder, printer and other necessary equipment. 1.6 The sound level meter can be designed to be operated by the user on site, or it can automatically and continuously measure the sound level in the absence of the user. The requirements of this section on the acoustic response are proposed when the operator is not in the sound field.
GB/T 3785.1-2010 Referenced Document
- CISPR 16-1-1999 Specification for Radio Disturbance and Immunity Measuring Apparatus and Methods Part 1: Radio Disturbance and Immunity Measuring Apparatus (Edition 2.0)
- GB/T 17626.2 Electromagnetic compatibility.Testing and measurement techniques.Electrostatic discharge immunity test*， 2018-06-07 Update
- GB/T 17799.2-2003 Electromagnetic compatibility--Generic standards--Immunity for industrial environments
- IEC 60942 Electroacoustics - Sound calibrators*， 2017-11-29 Update
GB/T 3785.1-2010 history
- 2023 GB/T 3785.1-2023 Electroacoustics—Sound level meters—Part 1: Specifications
- 2010 GB/T 3785.1-2010 Electroacoustics-Sound level meters- Part 1:Specifications
- 1997 GB/T 17181-1997 Integrating-averaging sound level meters
- 1983 GB/T 3785-1983 Electric,sonic properties and measuring methods for sound level meters
GB/T 3785.1-2010 Electroacoustics-Sound level meters- Part 1:Specifications has been changed from GB/T 17181-1997 Integrating-averaging sound level meters.