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This section provides an overview for noise generators as well as their applications and principles. Also, please take a look at the list of 7 noise generator manufacturers and their company rankings. Here are the top-ranked noise generator companies as of December, 2024: 1.Virginia Diodes, Inc., 2.Keysight Technologies, 3.ACO Pacific, Inc..
Table of Contents
A noise generator is a device that generates noise.
Noise generators are mainly used to evaluate the performance of various devices and systems. Some devices can generate white noise or pink noise, and some are available as a function within function generators.
White noise is noise that has uniform intensity across the entire bandwidth from low to high frequencies on the frequency axis. When heard audibly, it sounds like "sir".
Pink noise is noise whose components become smaller as the frequency increases. When heard audibly, it sounds like a "thud", like the sound of strong rain or a waterfall. Noise generators are useful as sound and vibration sources for sound and vibration testing.
There are two types of noise generators: dedicated noise generators and noise generators provided as a function within function generators. The purpose of using either type is to evaluate the functionality and performance of devices.
The noise generator is used to generate white noise or pink noise that simulates the noise that occurs in the natural world, and to evaluate whether the device under test can maintain the desired functions and performance.
It is used for EMI (Electro Magnetic Interference) testing and BER (Bit Error Rate) testing to evaluate whether the data errors in a device are within a specified range. It is also used for data transfer tests on disc drives of various BD/DVD recorders.
Noise generators are used as sound and vibration sources for sound and vibration testing. By connecting the output of white noise to a loudspeaker, the acoustic, sound insulation, and sound absorption characteristics of a hall, etc. can be evaluated. They are also useful for vibration tests when connected to a shaker.
Noise can be generated by using a noise generator, by using an electronic circuit such as a diode, or by using a programming language.
Noise generators are used for electromagnetic interference (EMI) tests and acoustic characteristic tests, etc. Noise generators and function generators have built-in noise generators. Select white noise, pink noise, etc. to output noise. The noise generator that comes with the synthesizer can also be used.
Use the broadband noise generated when a reverse voltage is applied to a zener diode, transistor, or operational amplifier. This is white noise, but it can also be generated by temperature-controlled resistors or gas discharge tubes. Pink noise is generated by inversely proportional power attenuation of the white noise to the frequency.
This method uses a programming language such as C, Java, or Python. Noise is generated by software using random numbers.
There are various types of noise generators. Some types output noise ranging from a few KHz to the GHz band, and their output frequency can be set linearly.
The level of noise output can also be adjusted. In addition to interfaces that can be operated via a control panel on the device itself, some types can be controlled from a PC via Ethernet.
EMI testing evaluates whether a device can continue to function correctly when subjected to the worst-case noise that could occur in the user's environment. For example, in the case of a household appliance like a television, it is permissible for the interference to momentarily disrupt the image on the screen or lead to audio malfunctions.
When the transient noise is eliminated, the device must be able to return to its original state. In order to confirm such a situation, a noise generator is used to create a worst-case environmental condition and evaluate whether normal operation can be continued under such conditions.
*Including some distributors, etc.
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Wireless Telecom Group, Inc. (Boonton, Holzworth, Noisecomand), established in 1985 and headquartered in Parsippany, New Jersey, United States of America, is a manufacturer of RF and Microwave Noise Sources and components. The company's core products include CE and RoHS Status phase noise analyzers, signal processing modules, and programmable noise generators. It also produces Spectrum analyzers and frequency dividers, which are also used to achieve precise channel-to-channel phase coherence performance. These products serve a multitude of industries, with applications in sectors such as aerospace, telecommunications, and medical technology.
Virginia Diodes, Inc.- VDI was founded in 1996 in Charlottesville, Virginia as a manufacturer of test and measurement equipment. The company provides a wide range of products designed for millimeter-wave and THz transmit and receive systems. The testing and measurement equipment includes Vector Network Analyzer, Spectrum Analyzer, and Signal Generator Extension Modules. There asl also Transmitter, Receiver, and Passive components and modules along with Diodes. These millimeter wave and Terahertz devices, components, and systems, have uses in the scientific, military, and commercial markets.
ACO Pacific is an internationally known manufacturer and supplier of measurement microphones and microphone systems. The company was established in 1982 and is based in Belmont, California. The company product portfolio includes calibrators, conventional and outdoor windscreens and acoustical/emi isolators. The company end-user customer base includes the Automotive Industry, Electrical and Electronics, aerospace and more. The company OEM relationships have included Agilent Technology, Audio Precision, DRA Labs, Goldline and many other.
Keysight Technologies, Inc. was founded in 1939 and headquartered in Santa Rosa, California. Keysight is a global developer and manufacturer of electronic design and test solutions to communications, networking, aerospace, defense, and government, automotive, energy, semiconductor, electronic, and education industries. Keysight’s communications solutions group solutions include electronic design automation software; radio frequency and microwave test solutions, hardware and virtual network test platforms and software applications, as well as optical laser source solutions. Keysight’s electronic industrial solutions group offers various design tools and verification tools. Keysight offers product support, technical support, and training and consulting services. It sells its products through direct sales force, distributors, resellers, and manufacturer's representatives.
Noisewave, established in 2006 with headquarters located in Whippany, New Jersey, is an international supplier of specialty noise components and testing equipment servicing military applications, aircraft, radiometers, electromagnetic susceptibility, and jamming systems. The company's products include noise diodes, bite modules, DIP modules, and wave guides used in instrumentation devices for telecommunications. Apart from its standard products, the company offers consultation and technical advice for custom solutions and production to meet client requirements.
Promax Test & Measurement SLU, founded in 1963 and based in Barcelona, Spain, is a manufacturer of telecommunication instrumentation and electronics equipment. The ISO 9001-certified company stocks products like digital modulators for broadcast, earth resistance meters, and optical fiber fusion splicers used to provide testing solutions for satellite, cable, and digital terrestrial television. It stocks over 200 products at its Barcelona facility, with 18 calibration centers and several service centers worldwide. It produces on-demand PCB circuit boards and electronic equipment and offers software development, training, and industrial design services.
Value Tronics International Inc., founded in 1992 and based in Elgin, Illinois, is a distributor of a wide range of equipment, such as signal generators, power supplies, and spectrum analyzers. The company stocks over 8,000 products, including used and new equipment from over 300 manufacturers like Berkeley Varitronics, Compression Techniques, and Delta Elektronika. It also buys obsolete and unused testing and lab equipment, which includes meters, oscilloscopes, and data loggers. The company provides financing options that allow customers to pay for purchases later. It also has a loyalty program where customers earn a 2% credit after a purchase.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Virginia Diodes, Inc. |
25.3%
|
| 2 | Keysight Technologies |
18.4%
|
| 3 | ACO Pacific, Inc. |
16.1%
|
| 4 | Wireless Telecom Group, Inc |
12.6%
|
| 5 | Noisewave Corporation |
12.6%
|
| 6 | Value Tronics International, Inc. |
8.0%
|
| 7 | PROMAX Test & Measurement SLU |
6.9%
|
Derivation Method
The ranking is calculated based on the click share within the noise generator page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
5 | 83.3% |
|
Spain
|
1 | 16.7% |
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