low frequency sound source

low frequency sound source, Total:148 items.

The international standard classification for "low frequency sound source" includes: Acoustics and acoustic measurements , Acoustics measurements and noise abatement in general , Amplifiers .

The Chinese standard classification for "low frequency sound source" includes: Technical Management , Acoustic Measurement , Acoustic instrument and seismograph , Sound and electronic sound equipment .

Professional Standard - Electron

SJ 1983-1981 Detail specification for low frequency low noise field-effect transistors,Type CS10
SJ/T 11767-2020 Measurement method of low-frequency noise parameters for diodes
SJ 1988-1981 Detail specification for low frequency low noise field-effect transistors,Type CS15
SJ/T 11846-2022 Voltage regulator low-frequency noise parameter test method
SJ 2004-1981 Detail specification for N channel junction pair field-effect transistors,Type CS34
SJ 2000-1981 Detail specification for N channel junction pair field-effect transistors,Type CS30
SJ 1984-1981 Detail specification for low frequency low noise field-effect transistors,Type CS11
SJ 2003-1981 Detail specification for N channel junction pair field-effect transistors,Type CS33
SJ 1999-1981 Detail specification for N channel junction pair field-effect transistors,Type CS29
SJ 1986-1981 Detail specification for low frequency low noise field-effect transistors,Type CS13
SJ 1993-1981 Detail specification for N channel junction pair field-effect transistors,Type CS23
SJ 1985-1981 Detail specification for low frequency low noise field-effect transistors,Type CS12
SJ 429-1973 Methods of measurement for frequency ranges of low noise travelling wave tubes
SJ 1995-1981 Detail specification for N channel junction pair field-effect transistors,Type CS25
SJ/T 11768-2020 Measurement method of low-frequency noise parameters for resistors
SJ 1987-1981 Detail specification for low frequency low noise field-effect transistors,Type CS14
SJ 2001-1981 Detail specification for N channel junction pair field-effect transistors,Type CS31
SJ 1997-1981 Detail specification for N channel junction pair field-effect transistors,Type CS27
SJ/T 11766-2020 Measurement method of low-frequency noise parameters for photocouplers
SJ/T 11765-2020 Measurement method of low-frequency noise parameters for transistors
SJ 1998-1981 Detail specification for N channel junction pair field-effect transistors,Type CS28
SJ 1994-1981 Detail specification for N channel junction pair field-effect transistors,Type CS24
SJ 1996-1981 Detail specification for N channel junction pair field-effect transistors,Type CS26
SJ 2002-1981 Detail specification for N channel junction pair field-effect transistors,Type CS32

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

GB/T 3767-2016 Acoustics-Determination of sound power levels and sound energy levels of noise sources using sound pressure-Engineering methods for an essentially free field over a reflecting plane
GB/T 31004.3-2014 Acoustics―Measurement of sound insulation in buildings and of building elements using sound intensity―Part 3:Laboratory measurements at low frequencies
GB/T 4130.2-2024 Acoustics—Calibration of hydrophones—Part 2: Procedures for low frequency pressure calibration
GB/T 14200-1993 performance requirements for high fidelity audio amplifiers
GB/T 12062-1989 Minimum performance requirements on high fidelity audio combination equipment
GB/T 16538-2008 Acoustics - Determination of sound power levels of noise sources using sound pressure - Comparison method in situ
GB/T 3768-2017 Acoustics―Determination of sound power levels and sound energy levels ofnoise sources using sound pressure―Survey method using an envelopingmeasurement surface over a reflecting plane
GB/T 4130-2000 Acoustics--Low frequency calibration methods of hydrophones
GB/T 4130-2017 Acoustics-Low frequency calibration methods of hydrophones

National Metrological Technical Specifications of the People's Republic of China

JJF 1275-1990 ~

Group Standards of the People's Republic of China

T/SLEIA 0002-2024 Test standards for low-frequency noise characteristics of electronic components
T/GRM 062-2023 Testing method for physical dispersion attenuation of low-frequency vibration sources in rocks

Taiwan Provincial Standard of the People's Republic of China

CNS 13196-1993 Sampling Rate and Source Encoding for Professional Digital Audio Recording

Professional Standard-Ships

CB/T 4320-2013 Low voltage direct current power supply of underwater sound equipment
CB/T 957-1995 Specifications for low-voltage DC regulated power supply for underwater acoustic equipment

Professional Standard - Petroleum

SY/T 5772-2012 Technical Rules of Controled Source Audio Magnetotelluric Exploration
SY/T 5772-2002 Technical rules of control source audio magnetotelluric exploration

International Telecommunication Union (ITU)

ITU-R QUESTION 2457-2006 Interference to the standard frequency and time signal service in the low-frequency band caused by noise from electrical sources
QUESTION 245/7-2006 Interference to the standard frequency and time signal service in the low-frequency band caused by noise from electrical sources
ITU-R QUESTION 245/7-2006 Interference to the standard frequency and time signal service in the low-frequency band caused by noise from electrical sources
ITU-T G.229-1972 Interference at harmonics from the power supply and other low frequencies
ITU-R BS.561-2-1986 Definitions of Radiation in LF MF and HF Broadcasting Bands - Section 10A-1 - Amplitude-Modulation Sound Broadcasting in Bands 5 (LF) 6 (MF) and 7 (HF)
ITU-R BS.1348-1 SPANISH-2001 Service Requirements for Digital Sound Broadcasting at Frequencies Below 30 MHz
ITU-R BS.498-2-1990 Ionospheric Cross-Modulation in the LF and MF Broadcasting Bands - Section 10A-1 - Amplitude-Modulation Sound Broadcasting in Bands 5 (LF) 6 (MF) and 7 (HF)
ITU-R BS.639-1986 Necessary Bandwidth of Emission in LF MF and HF Broadcasting - Section 10A-1 - Amplitude-Modulation Sound Broadcasting in Bands 5 (LF) 6 (MF) and 7 (HF)
ITU-R BS.597-1 FRENCH-1986 Channel Spacing for Sound Broadcasting in Band 7 (HF) - Section 10A-1 - Amplitude-Modulation Sound Broadcasting in Bands 5 (LF) 6 (MF) and 7 (HF)
ITU-R BS.597-1 SPANISH-1986 CHANNEL SPACING FOR SOUND BROADCASTING IN BAND 7 (HF)
ITU-R BS.559-2-1990 Objective Measurement of Radio-Frequency Protection Ratios in LF MF and HF Broadcasting - Section 10A-1 - Amplitude-Modulation Sound Broadcasting in Bands 5 (LF) 6 (MF) and 7 (HF)
ITU-R BS.638 SPANISH-1986 TERMS AND DEFINITIONS USED IN FREQUENCY PLANNING FOR SOUND BROADCASTING
ITU-R BS.561-2 FRENCH-1986 DEFINITIONS OF RADIATION IN LF, MF AND HF BROADCASTING BANDS
ITU-R BS.597-1-1986 Channel Spacing for Sound Broadcasting in Band 7 (HF) - Section 10A-1 - Amplitude-Modulation Sound Broadcasting in Bands 5 (LF) 6 (MF) and 7 (HF)
ITU-R BS.561-2 SPANISH-1986 DEFINITIONS OF RADIATION IN LF, MF AND HF BROADCASTING BANDS
ITU-R BS.1615-2011 "Planning parameters" for digital sound broadcasting at frequencies below 30 MHz
ITU-T G.229-1976 Interference at harmonics from the power supply and other low frequencies
ITU-R BS.1514-2 SPANISH-2011 System for digital sound broadcasting in the broadcasting bands below 30 MHz
ITU-R BS.1348-2-2011 Service requirements for digital sound broadcasting at frequencies below 30 MHz
ITU-R BS.1348-2 FRENCH-2011 Service requirements for digital sound broadcasting at frequencies below 30 MHz
ITU-R BS.1348-1 FRENCH-2001 Service Requirements for Digital Sound Broadcasting at Frequencies Below 30 MHz
ITU-R BS.638 FRENCH-1986 Terms and Definitions Used in Frequency Planning for Sound Broadcasting - Section 10A-1 - Amplitude-Modulation Sound Broadcasting in Bands 5 (LF) 6 (MF) and 7 (HF)
ITU-R BS.1514-2 FRENCH-2011 System for digital sound broadcasting in the broadcasting bands below 30 MHz
ITU-R BS.1514-2-2011 System for digital sound broadcasting in the broadcasting bands below 30 MHz
ITU-R BS.559-2 FRENCH-1990 OBJECTIVE MEASUREMENT OF RADIO-FREQUENCY PROTECTION RATIOS IN LF, MF AND HF BROADCASTING
ITU-R BS.559-2 SPANISH-1990 OBJECTIVE MEASUREMENT OF RADIO-FREQUENCY PROTECTION RATIOS IN LF, MF AND HF BROADCASTING
ITU-R BS.646-1-1992 Source Encoding for Digital Sound Signals in Broadcasting Studios - Section 10C - Audio-Frequency Characteristics of Sound-Broadcasting Signals
ITU-R BS.638-1986 Terms and Definitions Used in Frequency Planning for Sound Broadcasting - Section 10A-1 - Amplitude-Modulation Sound Broadcasting in Bands 5 (LF) 6 (MF) and 7 (HF)
ITU-R BS.646-1986 Source Encoding for Digital Sound Signals in Broadcasting Studios - Section 10C - Audio-Frequency Characteristics of Sound-Broadcasting Signals
ITU-R BS.1615-2 FRENCH-2020 “Planning parameters” for digital sound broadcasting at frequencies below 30 MHz
ITU-R BS.1348-2014 Service requirements for digital sound broadcasting at frequencies below 30 MHz
ITU-R BS.1615-2-2020 “Planning parameters” for digital sound broadcasting at frequencies below 30 MHz
ITU-R BS.639 FRENCH-1986 Necessary Bandwidth of Emission in LF MF and HF Broadcasting - Section 10A-1 - Amplitude-Modulation Sound Broadcasting in Bands 5 (LF) 6 (MF) and 7 (HF)
ITU-R BS.646-1 FRENCH-1992 SOURCE ENCODING FOR DIGITAL SOUND SIGNALS IN BROADCASTING STUDIOS
ITU-R BS.639 SPANISH-1986 Necessary bandwidth of emission in LF, MF and HF broadcasting
ITU-R BS.498-2 SPANISH-1990 IONOSPHERIC CROSS-MODULATION IN THE LF AND MF BROADCASTING BANDS
ITU-R BS.498-2 FRENCH-1990 IONOSPHERIC CROSS-MODULATION IN THE LF AND MF BROADCASTING BANDS
ITU-R BS.646-1 SPANISH-1992 SOURCE ENCODING FOR DIGITAL SOUND SIGNALS IN BROADCASTING STUDIOS

National Electrical Manufacturers Association（NEMA)

NEMA SBP 4-2015 Low-frequency Audible Signals

Association Francaise de Normalisation

XP S31-135:2017 Acoustics - Low frequency noise - Measuring method
NF S31-022:1992 ACOUSTICS. DETERMINATION OF SOUND POWER LEVELS OF NOISE SOURCES. PRECISION METHODS FOR BROAD-BAND SOURCES IN REVERBERATION ROOMS. (EUROPEAN STANDARD EN 23741).

International Organization for Standardization (ISO)

ISO 26432-2:2008 Digital source processing - Part 2: Digital cinema (D-cinema), low frequency effects (LFE) channel, audio characteristics
ISO 3742:1988 Acoustics; determination of sound power levels of noise sources; precision methods for discrete-frequency and narrow-band sources in reverberation rooms
ISO 3741:1988 Acoustics; determination of sound power levels of noise sources; precision methods for broad-band sources in reverberation rooms
ISO 3742:1975 Acoustics — Determination of sound power levels of noise sources — Precision methods for discrete-frequency and narrow-band sources in reverberation rooms
ISO 15186-3 Acoustics - Measurement of sound insulation in buildings and of building elements using sound intensity - Part 3: Laboratory measurements at low frequencies

GCC Standardization Organization

GSO ISO 26432-2:2016 Digital source processing -- Part 2: Digital cinema (D-cinema) low frequency effects (LFE) channel audio characteristics
GSO IEC 60268-5:2008 Sound system equipment - Part 5: Loudspeakers
OS GSO IEC 60565-2:2024 Underwater acoustics - Hydrophones - Calibration of hydrophones - Part 2: Procedures for low frequency pressure calibration
GSO ISO 6926:2015 Acoustics -- Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels

Kingdom of Bahrain Testing and Metrology Directorate

BH GSO ISO 26432-2:2017 Digital source processing -- Part 2: Digital cinema (D-cinema) low frequency effects (LFE) channel audio characteristics
BH GSO IEC 60565-2:2024 Underwater acoustics - Hydrophones - Calibration of hydrophones - Part 2: Procedures for low frequency pressure calibration

British Standards Institution (BSI)

BS ISO 26432-2:2008(2009) Digital source processing Part 2 : Digital cinema (D - cinema) low frequency effects (LFE) channel audio characteristics
BS 4196-2:1991 Sound power levels of noise sources-Precision methods for determination of sound power levels for discrete-frequency and narrow-band sources in reverberation rooms
BS 4196-2:1981 Sound power levels of noise sources-Precision methods for determination of sound power levels for discrete-frequency and narrow-band sources in reverberation rooms
BS EN ISO 15186-3:2010 Acoustics - Measurement of sound insulation in buildings and of building elements using sound intensity - Laboratory measurements at low frequencies
BS EN ISO 15186-3:2002 Acoustics. Measurement of sound insulation in buildings and of building elements using sound intensity. Laboratory measurements at low frequencies
BS 4196-7:1988 Sound power levels of noise sources-Survey method for determination of sound power levels of noise sources using a reference sound source

Korean Agency for Technology and Standards (KATS)

KS A ISO 26432-2-2022 Digital source processing － Part 2: Digital cinema(D-cinema) low frequency effects(LFE) channel audio characteristics
KS I ISO 7196-2024 Acoustics — Frequency-weighting characteristic for infrasound measurements
KS A ISO 26432-2-2012(2017) Digital source processing－Part 2：Digital cinema(D-cinema) low frequency effects(LFE) channel audio characteristics

The Directorate General of Specifications and Metrology (DGSM)

OS GSO ISO 26432-2:2016 Digital source processing -- Part 2: Digital cinema (D-cinema) low frequency effects (LFE) channel audio characteristics

Czech Standards Institute (UNMZ)

CSN 36 7420-1968 Audio-low-frequency amplifiers for electroacoustics. Performance requirement
CSN EN 23 742-1994 Acoustics. Determination of sound power levels of noise sources. Precision methods for discrete-frequency and narrow-band sources in reverberation rooms

Society of Automotive Engineers (SAE)

SAE J2366/1L_200111 Low Impedance Stereo Audio (Lisa)
SAE J2366-1L-2001 ITS Data Bus - Low Impedance Stereo Audio (LISA)
SAE AS6254A-2015 Minimum Performance Standard for Low Frequency Underwater Locating Devices (Acoustic) (Self-Powered)
SAE AS6254-2012 Minimum Performance Standard for Low Frequency Underwater Locating Devices (Acoustic) (Self-Powered)
SAE AS6254 Minimum Performance Standard for Low Frequency Underwater Locating Devices (Acoustic) (Self-Powered)
SAE AS6254A Minimum Performance Standard for Low Frequency Underwater Locating Devices (Acoustic) (Self-Powered)

American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE)

ASHRAE OR-05-6-1-2005 Assessment and Regulation of Low Frequency Noise
ASHRAE 3821-1994 Low-Frequency Noise Assessment Metrics - What Do We Know?

Türk Standardları Enstitüsü

TS 2709-1977 ACOUSTICS - DETERMINATION OF SOUND POWER LEVELS OF NOISE SOURCES — PRECISION METHODS FOR DISCRETE — FREQUENCY AND NARROW - BAND SOURCES IN REVERBERATION ROOMS
TS 2710-1977 ACOUSTICS — DETERMINATION OF SOUND POWER LEVELS OF NOISE SOURCES — PRECISION METHODS FOR BROAD — BAND SOURCES IN REVERBERATION ROOMS

Danish Standards Foundation

DS/ISO 3742:1991 Acoustics. Determination of sound power levels of noise sources. Precision methods for discrete-frequency and narrow-band sources in reverberation rooms
DS/ISO 3741:1991 Acoustics. Determination of sound power levels of noise sources. Precision methods for broad-band sources in reverberation rooms

Aeronautical Radio Inc.

ARINC 628P1-3 ITEM 4.0-2001 Interchangeability Standards - Video Sources

Austrian Standards

ONORM EN 23742-1992 Acoustics - Determination of sound power levels of noise sources - Precision methods for discrete-frequency and narrow-band sources in reverberation rooms
ONORM S 5007-1996 Measurement and assessment of low-frequency noise immissions in the neighbourhood

German Institute for Standardization

DIN 45680:2020-06 Measurement and assessment of low-frequency noise immissions / Note: Date of issue 2020-05-22*Intended as replacement for DIN 45680 (1997-03), DIN 45680 Beiblatt 1 (1997-03).
DIN 45680 E:2020-06 Draft Document - Measurement and assessment of low-frequency noise immissions
DIN 45680 E:2013-09 Measurement and assessment of low-frequency noise immissions in the neighbourhood
DIN 45680 E:2020 Draft Document - Measurement and assessment of low-frequency noise immissions
DIN 45680:1997-03 Measurement and assessment of low-frequency noise immissions in the neighbourhood / Note: To be replaced by DIN 45680 (2011-08), DIN 45680 (2013-09), DIN 45680 (2020-06).
DIN 45680 E:2011-08 Measurement and assessment of low-frequency noise immissions in the neighbourhood

European Committee for Standardization (CEN)

EN 23742:1991 Acoustics; determination of sound power levels of noise sources; precision method for discrete-frequency and narrow-band sources in reverberation rooms (identical with ISO 3742:1988)
EN 23741:1991 Acoustics; determination of sound power levels of noise sources; precision methods for broad-band sources in reverberation rooms (identical with ISO 3741:1988)

Swedish Institute for Standards

SIS SS-ISO 3742:1989 Acoustics — Determination ofsoundpower levels ofnoise sources — Precision methods for discrete-frequency and narrow-band sources in reverberation rooms
SS-ISO 3742:1989 Acoustics - Determination of sound power levels of noise sources - Precision methods for discrete-frequency and narrow-band sources in reverberation rooms

American National Standards Institute （ANSI)

ANSI S4.30-1992 Standard test method for audio engineering - Measurement of the lowest resonance frequency of loudspeaker cones
ANSI S12.32-1990(R1996) Precision Methods for the Determination of Sound Power Levels of Discrete-Frequency and Narrow-Band Noise Sources in Reverberation Rooms
ANSI S1.32-1980 Precision Methods for the Determination of Sound Power Levels of Discrete-Frequency and Narrow-Band Noise Sources in Reverberation Rooms

Standards Norway

NS-ISO 3742:1988 Acoustics — Determination of sound power levels of noise sources — Precision methods for discrete-frequency and narrow-band sources in reverberation rooms
NS 4818:1982 Acoustics — Determination of sound power levels of noise sources — Precision methods for discrete-frequency and narrow-band sources in reverberation rooms

Ente Nazionale Italiano di Unificazione

UNI EN 23742:1992 Acoustics. Determination of sound power levels of noise sources. Precision method for discrete-frequency and narrow-band sources in reverbation rooms.

Standard Association of Australia （SAA）

AS 1217.3:1985 Acoustics - Determination of sound power levels of noise sources, Part 3: Precision methods for discrete-frequency and narrow-band sources in reverberation rooms

Defense Logistics Agency

DLA MIL-DTL-17/233 B-2013 CABLES, RADIO FREQUENCY, FLEXIBLE, COAXIAL, 72 OHMS, LOW NOISE, LOW SMOKE, ENHANCED INSULATION RESISTANCE
DLA MIL-DTL-17/233-2009 CABLES, RADIO FREQUENCY, FLEXIBLE, COAXIAL, 72 OHMS, LOW NOISE, LOW SMOKE, ENHANCED INSULATION RESISTANCE
DLA MIL-DTL-17/233 A-2011 CABLES, RADIO FREQUENCY, FLEXIBLE, COAXIAL, 72 OHMS, LOW NOISE, LOW SMOKE, ENHANCED INSULATION RESISTANCE
DLA MIL-DTL-28875/5A-2000 AMPLIFIERS, RADIO-FREQUENCY AND MICROWAVE, SOLID-STATE, LOW NOISE, WIDEBAND, TO CONFIGURATION
DLA MIL-DTL-28875/5 A NOTICE 2-2010 AMPLIFIERS, RADIO-FREQUENCY AND MICROWAVE, SOLID-STATE, LOW NOISE, WIDEBAND, TO CONFIGURATION

American Society for Testing and Materials (ASTM)

ASTM E3207-21 Standard Classification for Determination of Low-Frequency Impact Noise Ratings

GB-REG

REG NASA-TM-X-71627-1974 Interim prediction method for low frequency core engine noise

Gosstandart of Russia

GOST 18604.20-1978 Transistors bipolar. Methods for measuring noise figure at low frequencies

Military Standards (MIL-STD)

MIL MIL-DTL-28875/5B-2015 Amplifiers, Radio-Frequency and Microwave, Solid-State, Low Noise, Wideband, to Configuration
MIL MIL-R-28887-1984 RADIO GROUP, VLF, LF, MF, AND HF

European Committee for Electrotechnical Standardization（CENELEC）

EN 60603-14:1999 Connectors for Frequencies Below 3 MHz for Use with Printed Boards Part 14: Detail Specification for Circular Connectors for Low-Frequency Audio and Video Applications Such as Audio, Video and Audio-Visual Equipment