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Voice Quality Testing
Examine spoken sound quantitatively.
See Also: POLQA, Voice Quality Test, VQT, QoE
- Omnicor
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IP Performance Testing Tools
Ethernet switches, routers and gateways have their distinct purposes and it is important to test their performance well. During R&D and DVT products are usually tested on L2/L7 while in production basic L2/L3 tests are usually sufficient. For those who follow testing methodology RFC 2544 and RFC 2889 are also available.
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Non-Intrusive voice Quality Analyzer
NIQA
The most known methods for quality evaluation of voice transmission systems were developed by Telecommunication Standardization Sector of International Telecommunications Union (ITU-T) in the middle of 90-s. Results of this work are presented in Recommendation P.800 (P.830) «Methods for subjective determination of transmission quality» [1, 2]. This document describes conditions for voice quality testing, audio contents, scoring and methods to evaluate results. Typically “Methods for subjective determination of transmission quality” are used to obtain mean subjective quality score according to five-digit scale (Mean Opinion Score – MOS).
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Voice Quality Test
POLQA
POLQA is the next-generation voice quality testing technology for fixed, mobile and IP based networks. POLQA was standardized by ITU-T as P.863 and can be applied for voice quality analysis of HD Voice, 3G and 3G/LTE networks.
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Nemo Walker Air
Nemo Walker Air provides you with the best real-time measurement and benchmarking. Nemo Walker Air's extensive application testing features offer full application-level metrics on-voice calls, voice quality, FTP/HTTP data transfers, Iperf, HTML browsing, YouTube streaming, Facebook testing, LinkedIn testing, Twitter testing, Instagram testing, email testing, SMS & MMS messaging, and ping. Versatile Indoor Benchmarking for all wireless technologies
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VoIP Testing
VQuad™
Testing on the extreme end-point of a VoIP softphone network has become a priority for many service providers. This method of testing represents what an end user is actually experiencing. Voice quality testing within VoIP networks is growing; a major concern is testing VoIP softphones that will be used with VoIP networks. GL’s VQuad™ with VoIP option along with Voice Quality Testing (VQT PESQ) software provides the ability to perform manual or automated Wideband audio tests using HD codecs on the VoIP network.
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Voice Quality Solutions
Communications is dramatically changing right now, as “mobility” and “IP” technologies such as LTE, Advanced LTE, WiMax, 3G, and Broadband Internet, lead this transformation. As these technologies are rolled out, basic voice/video/data quality will ultimately determine the fate of carriers and end equipment manufacturers. Simple and effective methods of testing voice, video, and data are sorely needed - GL’s Voice, Video, and Data Quality Test Solution provides this flexibility of connecting to and between any network, any service, and any interface.
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Anite SAS Interoperability Testing
Access advanced platform for network simulation, currently used by major Tier 1 carriers in their device acceptance programsAccelerate the introduction of new mobile devices with cost-effective, controllable, repeatable and automated lab-based testingQuickly evaluate devices in the integration, interoperability testing and carrier acceptance testing phasesConduct rigorous device testing to achieve superior experience in terms of functionality and quality of voice and data transferTest data performance under fading conditions using the internal fading capability to enable comprehensive performance testing
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End-To-End Performance Testing
IxLoad Wireless
Keysight Network Applications and Security
IxLoad Wireless enables mobile operators and equipment manufacturers to test and validate complex wireless networks and components for greater end-to-end service quality. This “lab to live” LTE testing solution recreates networking environments and real-world subscriber traffic, such as voice, video, and data. At the same time, it emulates multiple mobile subscriber activities—including handovers, TAU, and idle-connected transitions—for comprehensive test coverage. Whether modeling the behavior of thousands of subscribers or measuring end-user experience, IxLoad enables mobile operators to fast-track new networks and services with confidence.
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Telephony Conformance Analyzer
TCA 4100
Acoustics and voice quality conformance testing for cellular including VoLTE, digital, and analog phones. TCA 4100 is an automated & affordable voice quality & acoustics conformance test solution. A wide range of handset and hands- free phones such as VoIP, DECT, Wi-Fi, Bluetooth, cellular, analog, telephones, audio devices and hearing aids are supported.
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Voice Quality Solutions
Wireless networks can impair voice, video, and data quality by various means including poor mobile phone quality, voice compression and decompression algorithms, video compression and decompression algorithms, delay, loss or gain in speech levels, noise, acoustic and landline echo, and other distortions. GL provides a compact and portable solution for Wireless Devices, and Mobile Radio testing.
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Quality Measurement Tools for Voice, Audio/Visual and Data Payload analysis
PEXQ
PEXQ is OPTICOM’s latest product for Windows offering a complete portfolio of quality measurement tools for voice, audio/visual and data payload analysis based on human perception. PEXQ provides mandatory features in the area of R&D for the development of new multimedia codecs as well as for multimedia equipment manufacturers. Besides lab testing PEXQ is also ideal for network operators and carriers to measure quality of service. PEXQ is founded on well established internationally standardized measurement algorithms such as PESQ (ITU-T Rec. P.862, P.862.1 (narrow band), P.862.2 (wide band); Perceptual Evaluation of Speech Quality) and completely new metrics for video quality testing like PEVQ (Perceptual Evaluation of Video Quality).
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Advanced Voice Quality Assurance System
AVQA
R&S®AVQA is a non-intrusive voice assurance system that provides many integrated monitoring functions for ATC communications systems. These functions include:Quality assurance reports to CAAType acceptance of new IP systemsLive information about disturbance to ACC adminVoice quality report on ANSP interconnection (e.g. NewPENS)Network quality reporting
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Quality Assurance Testing
Manufacturers rely on Quality Assurance (QA) testing to maximize customer satisfaction and minimize costly after-sales troubleshooting and support. One of the best known drivers behind QA testing is the ISO 9000 standard, but there are many others.
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Resistance, Ground Testing, Battery And Power Quality
Our testing equipment works wherever you are, whenever you need it, with precision and reliability.
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Multiplexing Voice and Data Services
Vocality comes from a heritage of producing bandwidth efficient multiplexer solutions - mux units that provide the full range of user facing connectivity, while managing the bandwidth used in muxing the services between locations.
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Telemetry Voice Announcing System
HTS-Voice
Designed to fit on the handle of all Hitec radios, this system audibly provides telemetry data via speakers or earphones.
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Power Quality
Rishabh Instruments Pvt. Ltd.,
A compact state of art Power Quality Analyzer designed for utilities, as well as for industrial & commercial customers. It can continuously monitor power quality in accordance with EN50160, also the built in flexibility allows the user to set customized setting.
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Indoor Air Quality Testing
Underwriters Laboratories Inc.
We offer prompt reactive services to building engineers, owners and managers to quickly identify and resolve indoor environmental issues. Our healthy building services include heating, ventilation and air conditioning system (HVAC) inspections, Legionella testing, mold and moisture inspections, post food inspections, mold clearance inspections, post remediation inspections, focused air quality inspections, and odor inspections.
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Power Quality Testing
Weshine Electric Manufacturing Co., Ltd
Transformer K Factor, Power factors(PF)and displacement factors, Short-term voltage flicker, .Three phase unbalance (Current and Voltage), Waveform real-time display(4 channels voltage /4 channels current) True RMS values of voltages and currents
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Encryption Device for Voice & Data Communications
ELCRODAT 4-2
Rohde & Schwarz ELCRODAT products protect voice and data communications in armed forces and government digital and analog networks in all German and NATO security classifications.The ELCRODAT 4-2 is a fully ruggedized tactical crypto device for encrypting and decrypting voice and data communications for all German and NATO security classifications. Since it is TEMPEST-proof, it can be operated with HF/VHF/UHF radio, satellite communications and line transmission equipment. The device is ideal for deployment on stationary and mobile platforms in rugged terrain and in naval and airborne environments.
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Quality Tests
Phoenix Contact has been developing innovative products for electrical connection and automation technology for over 90 years. To ensure the quality of these products, they are tested on the basis of various directives and standards throughout the entire process of creation. As a result, the products can be integrated in a variety of industries under a wide range of environmental conditions.
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Air Quality
Controlling IAQ is critical to maximizing building performance and occupant health/safety. ACI sensor solutions for IAQ include VOC and PM (volatile organic compound and particulate matter), CO2 with options to fit every application.
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Power Quality Analyzer
APQM-700
*4 current inputs, physical current measurement on the neutral conductor.*Recording of up to 1100 parameters, including average, maximum, minimum and instantaneous values*Built-in heater, stable operation at low temperatures down to -20ºC.*Internal rechargeable battery, meter autonomy (min. 6 hours)*Ingress protection IP65, possibility of working in rain, snow and high humidity.
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Voice/Audio Quality Analyzer
OPERA™
The OPERA™ Voice/Audio Quality Analyzer represents the latest developments to objectively evaluate and assure the quality of compressed voice and wide-band audio signals, based on modeling the human ear. With OPERA you can achieve a comprehensive analysis of the end-to-end quality of today's and next generation networks, such as VoIP, VoDSL, VoATM, ISDN, GSM, POTS, from the caller to the callee. Also, you can test the audio quality of compression formats such as MP3, AAC, AC3, Microsoft Windows Media, from the studio source to the receiver, or from the server to the client.
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Testing & Quality
The solar simulator, electroluminescence and hi-Pot testers are the main machines used to test photovoltaic modules. These machines can be positioned at the end of the production line and along the production chain to keep the quality and efficiency of the photovoltaic modules under control after the most sensitive production phases. Each machine uses the best technologies in order to guarantee the best and most accurate measurements.
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Water Quality Products
When you need to perform critical water testing, look to us for an extensive selection of electrochemical meters, controllers, probes, electrodes, test kits, buffers, and standards. Our field and laboratory instrumentation include water analysis instruments for dissolved oxygen, temperature, pH, conductivity, salinity, and turbidity.
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Water Quality Testing Instrument
GDYS-101SC
Water quality analysis meter, single element. Each model can test one element contained in water.
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Sky Quality Meter
SQM-LR
An RS232 SQM model for night-time sky brightness monitoring! An affordable meter for continual, connected measuring of sky brightness for astronomers! The "Sky Quality Meter - LR" measures the brightness of the night sky in magnitudes per square arcsecond.
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Power Quality Software
Save Time and Improve Accuracy When Troubleshooting AnswerModules® are proprietary algorithms that convert raw power quality event data into precise answers to determine the source and cause of the disturbance. Read More
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Vehicle Interior Air Quality Testing
Underwriters Laboratories Inc.
Hundreds of volatile organic compounds (VOCs), which off-gas from the materials and finishes used in car interiors, can be present in the air inside a new vehicle. VOCs can cause odor complaints and have been linked to numerous health concerns. As the demand for healthier products increases, vehicle manufacturers that tell a compelling sustainability story can capitalize on a significant opportunity to grow market share. UL helps manufacturers capture value for their sustainability efforts, mitigate risks and comply with increasingly complex regulations.
