| Standard No. |
Title |
Price(USD) |
Delivery |
Status |
Add To Cart |
| GB/T 15485-1995 |
Acoustics－Methods for the calculation of the articulation index of speech |
|
via email in
1-3 business day
|
ABOLISHED
|
please email coc@codeofchina.com for quotation
|
| JJG 994-2004 |
Verification Regulation of Digital Audio Generators |
255 (USD) |
via email in
1-3 business day
|
VALID
|
|
| GB/T 18696.2-2002 |
Acoustics--Determinatio of sound absorption coefficient and impedance in impedance tubes--Part 2:Transfer function method |
|
via email in
1-3 business day
|
VALID
|
please email coc@codeofchina.com for quotation
|
| GB/T 7341.4-1998 |
Audiometers-Part 4 : Equipment for extended high-frequency audiometry |
|
via email in
1-3 business day
|
VALID
|
please email coc@codeofchina.com for quotation
|
| GB/T 16402-1996 |
Acoustics-Reference equivalent threshold sound pressure levels for pure tones and insert earphones |
|
via email in
1-3 business day
|
VALID
|
please email coc@codeofchina.com for quotation
|
| GB/T 3767-1996 |
Acoustics—Determination of sound power levels of noise sources using sound pressure—Engineering merthod in an essentially free field over a reflecting plane |
|
via email in
1-3 business day
|
ABOLISHED
|
please email coc@codeofchina.com for quotation
|
| JJG 991-2004 |
Verification Regulation of Aural Impedance Audiometers |
345 (USD) |
via email in
1-3 business day
|
ABOLISHED
|
|
| GB/T 4854.7-1999 |
Acoustics-Reference zero for the calibration of audiometric equipment-Part 7：Reference threshold of hearing under free-field and diffuse-field listening conditions |
|
via email in
1-3 business day
|
ABOLISHED
|
please email coc@codeofchina.com for quotation
|
| GB/T 18699.2-2002 |
Acoustics-Determination of sound insulation performances of enclosures--Part 2:Measurements in situ (for acceptance and verification purposes) |
|
via email in
1-3 business day
|
VALID
|
please email coc@codeofchina.com for quotation
|
| GB/T 20431-2006 |
Acoustics―Guidelines for noise control by silencers |
|
via email in
1-3 business day
|
VALID
|
please email coc@codeofchina.com for quotation
|
| GB/T 15611-1995 |
Acoustics－Calibration of high frequency hydrophone |
|
via email in
1-3 business day
|
VALID
|
please email coc@codeofchina.com for quotation
|
| GB/T 18699.1-2002 |
Acoustics--Determination of sound insulation performances of enclosures Part 1:Measurements under laboratory conditions(for declaration purposes) |
|
via email in
1-3 business day
|
VALID
|
please email coc@codeofchina.com for quotation
|
| GB/T 7341.2-1998 |
Audiometers-Part 2 :Equipment for speech audiometry |
|
via email in
1-3 business day
|
VALID
|
please email coc@codeofchina.com for quotation
|
| GB/T 18696.1-2004 |
Acoustics—Determination of sound absorption coefficient and impedance in impedance tubes—Part 1:Method using standing wave ratio |
|
via email in
1-3 business day
|
VALID
|
please email coc@codeofchina.com for quotation
|
| GB/T 4130-2000 |
Acoustics--Low frequency calibration methods of hydrophones |
|
via email in
1-3 business day
|
ABOLISHED
|
please email coc@codeofchina.com for quotation
|
| GB/T 4854.4-1999 |
Acoustics-Reference zero for the calibration of audiometric equipment-Part 4：Reference levels for narrow-band masking noise |
|
via email in
1-3 business day
|
VALID
|
please email coc@codeofchina.com for quotation
|
| GB/T 16405-1996 |
Acoustics—Measurement of insertion loss of ducted silencers without flow—Laboratory survey method |
|
via email in
1-3 business day
|
VALID
|
please email coc@codeofchina.com for quotation
|
| GB/T 6881.3-2002 |
Acoustics--Determination of sound power levels of noise sources-using sound pressure--Engineering methods for small,movable sources in reverberant field--Part 2:Methods for special reverberation test rooms |
|
via email in
1-3 business day
|
VALID
|
please email coc@codeofchina.com for quotation
|
| GB/T 18022-2000 |
Acoustics--Methods for measuring the longitudinal sound speed and attenuation coefficient of rubbers and plastics in the frequency range 1 MHz to 10 MHz |
180 (USD) |
via email in
1-3 business day
|
VALID
|
|
| GB/T 15484-1995 |
Acoustics－Description and measurement of physical properties of sonic booms |
|
via email in
1-3 business day
|
VALID
|
please email coc@codeofchina.com for quotation
|
|
|
