Sound Pressure Level
measurement of a sound wave's pressure relative to a reference value. Also known as: SPL
See Also: SPL
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Product
Acoustic Control System
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m+p VibControl performs acoustic testing in reverberation chambers and direct field environments as well as progressive wave tube testing. It is a fully automatic digital control system, providing fast, accurate and repeatable control of high-level noise to a reference octave band spectrum and the overall sound pressure level (OASPL). The control guarantees a high level of product safety.
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Product
Smaart SPL
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Smaart SPL offers the same complete SPL measurement toolset from Smaart v8 in a purpose-built standalone package, with an interface designed for simplicity and speed. Smaart SPL provides a powerful and full-featured solution for monitoring, metering, and logging SPL but with a format and price point more accessible to users who don’t require the real-time frequency and impulse response mode analysis capabilities of our flagship Smaart v8 software.
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Product
Test Chambers
Anechoic
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Free Field Test Chamber for sound pressure level measurement, sound power level determination, acoustic research and audio measurement applications
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Product
SPL Calibrator -124 dBSPL @ 1 kHz
511ES124
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The 511ES124 is designed to provide 124 dBSPL at 1 kHz to meet the needs of the low sensitivity microphones found in many high SPL measurement applications. The microphones used in Car Stereo competitions like dB Drag racing, IASCA, and USAC have had their sensitivities reduced to the point where 94 dBSPL may no longer be adequate for calibration.
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Product
Acoustic Control
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Acoustic Control provides accurate control for high-level noise testing of reverberant chambers or progressive wave tubes. Based on the Spider hardware platform, Acoustic Control achieves quick and reliable control of the noise level to the reference octave spectrum and the overall sound pressure level (OASPL). Included safety features guarantee the safety of the unit under test.
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Product
Sound Level Meters
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Precision Mastech Enterprises Co.
A portable, handheld instrument designed to measure sound pressure levels (SPL) in decibels (dB), simulating how the human ear hears.
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Product
Basic Sound Level Measurement System
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The system utilizes a National Instruments CompactDAQ data acquisition device and the Nelson Acoustics Trident software application to provide a basic, computer based, sound pressure level measurement system.
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Product
Sound Level Meters
HD 8701
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The sound level meter HD 8701 is a portable instrument, easy and quick to use, suitable for measuring industrial and civil noise levels. The noise levels can be read easily in dB (A) on the large liquid crystal display which also shows all the information concerning the mode of operation of the instrument. One second after switching on and with a resolution of 0.1 dB, the digital reading gives the continuously updated value of the RMS sound pressure level, with a type A frequency weighting. The single range from 30 to 130 dB further simplifies the use of the instrument, as the user does not have to change scale.
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Product
Anechoic Chambers
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Eckel Noise Control Technologies
Anechoic Chambers are echo-free enclosures with a sound energy absorption level of 99% to 100%, or a reflected sound pressure level of 10% or less. The frequency at which the energy absorption drops below 99%, or the pressure reflection exceeds 10%, is known as the low-frequency cut-off. Sound absorption is obtained by lining the walls, ceilings, and floor with wedges or other sound absorbing elements or SuperSoft panels, depending on performance level required and cut-off desired.
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Product
Small Device Noise Emission Test System
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The Small Device Noise Emission Test System from VIacoustics is a turnkey solution for the measurement of noise emissions of small devices typically used in computers, consumer electronics, appliances and automobiles. The system includes all hardware and software necessary (see the components tab) for the determinations of sound power levels (1/3 octave band and A-weighted), emission sound pressure levels (normalized 1/3 OB, A-weighted and high resolution FFT) and *ISO 532B loudness. The system is designed to be operated by a technician for production level testing or to be used by an engineer in the product development process.
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Product
Sound Level Calibrators
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PeakTech Prüf- und Messtechnik GmbH
For sound level measurements in extreme conditions, at high altitudes or high demands on the accuracy of the measurement results, sound level meters should be checked prior to the measurement with a sound level calibrator. Also for calibration and verification of microphones in audio technology, you need a sound level calibrator, which is designed to produce several sound pressure levels at a fixed frequency characteristic. This calibrator has two switchable calibration steps.
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Product
USB-4432, 102.4 kS/s, 100 dB, 0.8 Hz AC/DC Coupled, 5-Input Sound and Vibration Device
780421-01
Sound and Vibration
The USB-4432 is designed for sound and vibration measurements. Four of the input channels incorporate integrated electronic piezoelectric (IEPE) signal conditioning for accelerometers and microphones and built-in antialiasing filters that automatically adjust to your sampling rate. The fifth input channel does not include IEPE support.
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Product
NI-9234, 4-Channel, 51.2 kS/s/channel, ±5 V, C Series Sound and Vibration Input Module
779680-03
Sound and Vibration
4-Channel, 51.2 kS/s/channel, ±5 V, C Series Sound and Vibration Input Module - The NI‑9234 can measure signals from integrated electronic piezoelectric (IEPE) and non‑IEPE sensors such as accelerometers, tachometers, and proximity probes. The NI‑9234 is also compatible with smart TEDS sensors. The NI‑9234 delivers a wide dynamic range and incorporates software-selectable AC/DC coupling and IEPE signal conditioning. The input channels simultaneously measure signals. Each channel also has built-in anti-aliasing filters that automatically adjust to your sample rate. When used with NI software, this module provides processing functionality for condition monitoring such as frequency analysis and order tracking.
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Product
PXIe-4463, 51.2 kS/s, 2-Output PXI Sound and Vibration Module
783086-01
Sound and Vibration
The PXIe‑4463 offers high dynamic range and THD+N for audio, acoustic, and vibration applications. It provides the high precision and dynamic range necessary for the most stringent audio generation requirements in a modular form … factor. The PXIe‑4463 contains two 24-bit digital‑to‑analog converters to allow for fully differential simultaneous generation. Complete with three gain ranges, the PXIe‑4463 can generate current with programmable, per channel output configurations. The two timing engines allow you to perform multisample-rate applications on a single module and independently start and stop channels on a single module.
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Product
PCI-4462, 204.8 kS/s, 118 dB, 3.4 Hz AC/DC Coupled, 4-Input Sound and Vibration Device
779309-01
Sound and Vibration
The PCI‑4462 is a high-accuracy data acquisition module specifically designed for sound and vibration applications. It provides simultaneous four-channel dynamic signal acquisition with six programmable gain settings for making high-accuracy, frequency-domain measurements. The PCI‑4462 also includes software-configurable AC/DC coupling and integrated electronic piezoelectric (IEPE) conditioning to ensure precision measurements with microphones, accelerometers, and other transducers that have very large dynamic ranges. Common applications for dynamic signal acquisition devices include audio test; automotive test; noise, vibration, and harshness (NVH) analysis; and machine condition monitoring.
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Product
PXIe-4463, 51.2 kS/s, 2-Output PXI Sound and Vibration Module
783086-02
Sound and Vibration
51.2 kS/s, 2-Output PXI Sound and Vibration Module - The PXIe‑4463 offers high dynamic range and THD+N for audio, acoustic, and vibration applications. It provides the high precision and dynamic range necessary for the most stringent audio generation requirements in a modular form factor. The PXIe‑4463 contains two 24-bit digital‑to‑analog converters to allow for fully differential simultaneous generation. Complete with three gain ranges, the PXIe‑4463 can generate current with programmable, per channel output configurations. The two timing engines allow you to perform multisample-rate applications on a single module and independently start and stop channels on a single module.
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Product
NI-9250, 2-Channel, 102.4 kS/s/ch Simultaneous, ±5 V, C Series Sound and Vibration Input Module
783827-01
Sound and Vibration
2-Channel, 102.4 kS/s/ch Simultaneous, ±5 V, C Series Sound and Vibration Input Module - The NI‑9250 can measure signals from integrated electronic piezoelectric (IEPE) and non‑IEPE sensors such as accelerometers and microphones. The NI‑9250 is also compatible with smart TEDS sensors. The NI‑9250 delivers a wide dynamic range and incorporates software-selectable AC/DC coupling and IEPE signal conditioning. The input channels simultaneously measure signals. Each channel also has built-in anti-aliasing filters that automatically adjust to your sample rate. When used with NI software, this module provides processing functionality for condition monitoring such as frequency analysis and order tracking.
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Product
NI-9231, 8-Channel, 51.2 kS/s/channel, -5 V to 5 V, C Series Sound and Vibration Input Module
783610-01
Sound and Vibration
8-Channel, 51.2 kS/s/channel, -5 V to 5 V, C Series Sound and Vibration Input Module - The NI-9231 is a high-density sound and vibration module that can measure signals from integrated electronic piezoelectric (IEPE) and non-IEPE sensors such as accelerometers, tachometers, and proximity probes. It can perform the high dynamic range measurements necessary for modern measurement microphones and accelerometers and features simultaneous sampling. The NI-9231 incorporates both a TEDS input path and 2 mA of IEPE signal excitation source that can be turned on and off, removing the need for external sensor power and reducing the complexity of the data acquisition system.
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Product
NI-9232, 3-Channel, 102.4 kS/s/channel, ±30 V, C Series Sound and Vibration Input Module
782000-02
Sound and Vibration
3-Channel, 102.4 kS/s/channel, ±30 V, C Series Sound and Vibration Input Module - The NI‑9232 can measure signals from integrated electronic piezoelectric (IEPE) and non‑IEPE sensors such as accelerometers, tachometers, and proximity probes. The NI‑9232 is also compatible with smart TEDS sensors. The NI‑9232 incorporates software-selectable AC/DC coupling, IEPE open/short detection, and IEPE signal conditioning. The input channels simultaneously measure signals. Each channel also has built-in anti-aliasing filters that automatically adjust to your sample rate. When used with NI software, this module provides processing functionality for condition monitoring such as frequency analysis and order tracking.
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Product
NI-9231 and cDAQ-9171 USB Sound and Vibration Measurement Bundle
865665-01
Sound and Vibration
NI-9231 and cDAQ-9171 USB Sound and Vibration Measurement Bundle - The USB Sound and Vibration Measurement Bundle with NI-9231 and cDAQ-9171 includes the NI-9231 C Series Sound and Vibration Input Module and the cDAQ-9171 CompactDAQ Chassis for sound and vibrations measurements. This bundle provides a portable, USB-based sensor measurement system that helps you measure signals from integrated electronic piezoelectric (IEPE) and non IEPE sensors such as accelerometers, tachometers, and proximity probes. The included NI-9234 features 8 channels with built-in anti-aliasing filters that automatically adjust to your sample rate. Additionally, the bundle supports simultaneous sampling and high dynamic range measurements necessary for modern measurement microphones and accelerometers.
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Product
FD-11634, 8-Channel Sound and Vibration Input Device for FieldDAQ
786471-01
Sound and Vibration
The FD-11634 can measure signals from integrated electronic piezoelectric (IEPE) and non-IEPE sensors such as accelerometers, tachometers, and proximity probes. The device also works with smart TEDS sensors, delivers a wide … dynamic range, and incorporates software-selectable AC/DC coupling and IEPE signal conditioning. The input channels simultaneously measure signals and have built-in anti-aliasing filters that adjust to your sample rate. This device is IP65/IP67-rated to be dust-tight and water-submersible and can sustain 100 g shock and 10 g RMS vibration in -40°C to 85°C environments. You program the FD-11634 with NI-DAQmx, which automatically synchronizes multiple FieldDAQ™ devices. When used with NI software, this device can provide processing functionality for condition monitoring such as frequency analysis and order tracking.
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Product
USB-4431, 102.4 kS/s, 100 dB, 0.8 Hz AC/DC Coupled, 4-Input/1-Output Sound and Vibration Device
780164-01
Sound and Vibration
The USB-4431 is designed for sound and vibration measurements. Input channels incorporate integrated electronic piezoelectric (IEPE) signal conditioning for accelerometers and microphones. The four USB-4431 input channels simultaneously digitize input signals. The analog output (AO) channel is ideal for stimulus-response tests and can be synchronized to the AI channels.
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Product
USB Sound And Vibration Measurement Bundle
Sound and Vibration
The USB Sound and Vibration Measurement Bundle provides a portable, USB-based sensor measurement system that helps you measure signals from integrated electronic piezoelectric (IEPE) and non‑IEPE sensors such as accelerometers, tachometers, and proximity probes.
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Product
NI-9230, 3-Channel, 12.8 kS/s/channel, ±30 V, C Series Sound and Vibration Input Module
784396-01
Sound and Vibration
3-Channel, 12.8 kS/s/channel, ±30 V, C Series Sound and Vibration Input Module - The NI‑9230 can measure signals from integrated electronic piezoelectric (IEPE) and non‑IEPE sensors such as accelerometers, tachometers, and proximity probes. The NI‑9230 is also compatible with smart TEDS sensors. The NI‑9230 incorporates software-selectable AC/DC coupling, IEPE open/short detection, and IEPE signal conditioning. The input channels simultaneously measure signals. Each channel also has built-in anti-aliasing filters that automatically adjust to your sample rate. When used with NI software, this module provides processing functionality for condition monitoring such as frequency analysis and order tracking.
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Product
PXIe-4492, 204.8 kS/s, 113 dB, 2 Gains, 0.5 Hz AC/DC-Coupled, 8-Input PXI Sound and Vibration Module
781490-01
Sound and Vibration
204.8 kS/s, 113 dB, 2 Gains, 0.5 Hz AC/DC-Coupled, 8-Input PXI Sound and Vibration Module - The PXIe‑4492 is designed for sound and vibration applications. With 24-bit analog inputs and IEPE constant current signal conditioning, the module is ideal for making precision measurements with microphones, accelerometers, and other transducers that have very large dynamic ranges. The PXIe‑4492 delivers simultaneous sample on all channels. In addition, it includes built-in antialiasing filters that automatically adjust to your sample rate, software-selectable input gains, and TEDS smart sensor support for error-free setup. Common applications include noise, vibration, and harshness (NVH) analysis; large microphone arrays; and dynamic structural test.
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Product
Sound Level Monitor
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McLennan Sound Monitoring, Inc
McLennan Sound Monitoring, Inc. offers two unique single-ranged instruments. For high sensitivity areas 41dBA – 101dBA range, and a standard range of 61dBA – 121dBA. A whisper from two feet will activate the 41dBA LED. Normal human conversation ranges from 60 – 80 dBA. Low level talk from two feet will activate the 61dBA LED.
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Product
Sound Level Meters
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A sound level meter is used for acoustic (sound that travels through air) measurements. It is commonly a hand-held instrument with a microphone. The diaphrahm of the microphone responds to changes in air pressure caused by sound waves.
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Product
NI-9234 and cDAQ-9171 USB Sound and Vibration Measurement Bundle
865664-01
Sound and Vibration
NI-9234 and cDAQ-9171 USB Sound and Vibration Measurement Bundle - The USB Sound and Vibration Measurement Bundle with NI-9234 and cDAQ-9171 includes the NI-9234 C Series Sound and Vibration Input Module and the cDAQ-9171 CompactDAQ Chassis for sound and vibration measurements. This bundle provides a portable, USB-based sensor measurement system that helps you measure signals from integrated electronic piezoelectric (IEPE) and non IEPE sensors such as accelerometers, tachometers, and proximity probes. The included NI-9234 features 4 channels with built-in anti-aliasing filters that automatically adjust to your sample rate. Additionally, when used with NI software, the bundle provides processing functionality for condition monitoring such as frequency analysis and order tracking.
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Product
Sound Level Meter
SM-2
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Monacor International GmbH & Co.
Sound level meter (class 2), one-hand operation. Electret microphone capsule. Max hold and data hold function. A and C rating, slow and fast. Additional output for DC/˜V via 3.5 mm jack. Supplied with a practical nylon carrying bag.
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Product
Sound Level Meters
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Digital Sound Level Meter is a multi-function instrument. It measures both the A and C weightings. It is excellent for checking noise levels to remain in standards of compliance and has many other applications.
