Communications Measurement
Communications Audio Measurements for telephony and consumer electronics devices
SoundCheck measures audio quality in communication applications including conventional, cell and VoIP phones, emergency response systems and conferencing equipment. Communications measurements are often also applied to consumer electronic devices with calling functionality, such as headphones, smart speakers and automotive infotainment systems.
SoundCheck offers fast, accurate, and highly flexible measurement. It provides all the test signals, analysis and post-processing tools you need for a wide range of standard and custom audio quality tests. Its extensive analysis and post-processing options include all the capabilities and algorithms needed to design customized communications tests – for example ISO 532-3 and Zwicker Loudness, a silence stimulus, LEQ versus time and more. A simple point-and-click interface makes it easy to construct complex tests. Complete control over all test parameters from the stimulus to custom post-processing equations make SoundCheck an exceptionally flexible solution.
While many choose SoundCheck for its flexibility, pre-written test sequences make it simple to measure to communications standards without having to program them yourself. We offer pre-written sequences for TIA-920B, IEEE-1329, TIA-5050 and Doubletalk to both ITU-T P.502 and ETSI TS 126 132. An optional POLQA module applies this algorithm within SoundCheck allowing these measurements to be run alongside others as part of a test sequence.
SoundCheck’s broad applications across consumer electronics ensure that it offers more than simply communications tests. It has the flexibility and functionality to implement a broad range of product performance tests in addition to telephony measurements. These audio and electroacoustic tests include frequency response, distortion, perceptual measurements, impedance, wake word detection and more. Advanced open loop measurement capability overcomes Bluetooth and network delays so that wireless and internet-connected devices can be measured just as easily as wire ones.
With pre-written sequences for quick setup, the flexibility to make custom measurements, and support for both communications and general audio tests, SoundCheck streamlines every stage of device testing. Best of all, it delivers this power at a highly competitive price-point.
Communications measurements include
- Frequency response
- Loudness rating
- send loudness rating (SLR)
- receive loudness rating (RLR)
- sidetone masking rating (STMR)
- weighted terminal coupling loss(TCLw)
- Doubletalk
- Distortion
- Linearity
- Noise
- Standards & Algorithms
- TIA
- ETSI
- ITU
- POLQA
Cellphone test using SoundCheck with a head and torso simulator and handset positioner
Example Configurations
Test configuration for TIA-920B Measurements
Communications test on a smart speaker
Audio playback test on a smartphone
Learn about Testing to Telephone Standards
This video seminar, presented by Steve Temme and communications expert John Bareham, demonstrates measurements to TIA920B and TIA5050 standards, as well as Doubletalk measurements and POLQA analysis.
Recommended Software and Hardware for Communications Tests
Software
SoundCheck Plus (Part # 1102) or SoundCheck Advanced (Part# 1103)
Optional SoundCheck Modules
Telecom Loudness Ratings (part # 2007)
Active Speech (part # 2033)
Multichannel RTA (part # 2005)
WAV File Equalization (part # 2013)
Loudness Standards (part # 2031)
Hardware
AudioConnect 2 2 in, 2-out Audio Interface with microphone power (Part # 4047)
AudioConnect 8×8 8-in, 8-out Audio Interface with microphone power (Part # 4048)
AmpConnect 621 6-in, 2-out Audio Interface with microphone power and amplifier (Part # 4046)
BTC-4149 (Part # 5816) and PQC-4149 (Part # 5817) Bluetooth Interfaces
Head and Torso Simulator
Handset Positioner
Pre-written tests
TIA-920B Test Sequence (Part # 3111). dual-bandwidth standard that applies to both narrowband (NB) and wideband (WB) devices. It also allows a choice between Free Field (FF) and Diffuse Field (DF) as the Listener Reference Point (LRP). Both FF and DF are allowed in TIA-920.110-B. Requires SoundCheck Plus (part # 1102) and modules 2005, 2007, 2013.
IEEE-1329 (Part # 3103) IEEE 1329-1999 Voice switching measurements Clause 10 of Std Method for Measuring Transmission. Requires SoundCheck Plus (part # 1102) and modules 2005, 2007, 2013
TIA-5050 (Part # 3112) TIA-5050 measures the volume control requirements for wireless (mobile) devices according to TIA-5050. Requires SoundCheck Plus (part # 1102) plus modules 2005 and 2007
Doubletalk (Part # 3114) Doubletalk analysis to both ITU-T P.502 and ETSI TS 126 132. Requires SoundCheck Plus (part # 1102) plus modules 2005, 2032, 2033
Examples: How do our Customers use SoundCheck for Communications Measurements?
These are just some of the automotive audio measurements that our customers are making:
- Measurement of speakerphone to TIA 920-A
- Measurement of frequency response, loudness rating and distortion of handset
- Measurement of dropout on a Bluetooth headphone
- Measurement of a smart speaker used as a communications device
- Full telecoms tests including TIA 920-B and Doubletalk on a conference phone
Curious to learn more?
Check out the links in the right sidebar for communications test sequences, white papers, webinars and more about communications audio testing, or fill out this form for a personalized online or in-person demo from our team.
