However, these measurements present two significant challenges:
With both sound and listening quality being differentiators between competitive models, robust audio testing of both the speaker and the microphone array is essential. Interfaces, amplifiers, current monitors, and 3rd party hardware such as head and torso simulators are available for more complex test requirements. Other multichannel audio interfaces, MEMS Interface can also be connected to, and controlled by SoundCheck for automotive testing applications.
Smart recorder iot full#
Interfaces, offering full control over all Bluetooth protocol settings and explicit control over the CODEC choice and transmitter power. It also provides autoranging when used with SoundCheck to maximize the dynamic range of a measurement.īluetooth Audio, MEMS, A2B and other Interfaces: Bluetooth speakers, headphones and car audio head units, connect to SoundCheck via Bluetooth SoundConnect 2™: A 2-channel microphone power supply (SCM, IEPE, 200V polarization) ideal for applications where polarization, TEDS, and high and low pass filtering are required. SCM™ Measurement Microphones: SCM measurement microphones are robust, accurate, low noise, stable and cost-effective. This is a very cost effective approach for basic smart device testing. Integrated impedance circuit for all voice-controlled device tests.ĪudioConnect™: A compact audio interface with power supply and gain for up to 2 SCM™ microphones. Listen’s smart device test hardware includes:ĪmpConnect™: Listen’s all-in-one hardware includes an audio interface, amplifier, power and gain for up to 2 SCM or IEPE microphones, digital I/O, and Smart Speaker test results showing frequency response and distortion
Smart recorder iot software#
The software also controls the audio measurement hardware – an audio interface, measurement microphone, power supplies, and amplifiers and speakers for background noise generation. These include sequences for open loop microphone and speaker test, as well as more complex sequences for specific test standards such as TIA 910 and background noise simulation to the ETSI ES 202 396-1 standard. Several easy to modify sample sequences for measuring voice-activated devices are provided. Repeatable, automated tests are quickly and easily created, modified and saved using the simple point-and-click interface.
Complete flexibility in stimulus choice enables the use of real and complex test signals such as multitone, speech, and even music, to test devices. With smart triggering and sophisticated post-processing algorithms to allow asynchronous measurement (commonly known as ‘open loop testing’), SoundCheck offers incredible flexibility for testing using virtually any interface including Bluetooth, cloud-based systems, A2B® bus automotive interfaces and more. Powerful, fast and accurate, it measures every audio parameter from the R&D laboratory to the production line. SoundCheck’s modular combination of hardware and software is cost-effective, flexible and expandable.Īt the heart of the system is the SoundCheck software. This has resulted in extremely sophisticatedĪlgorithms for optimizing the speed and accuracy of open loop tests, as well as the expertise to guide you through the process. has been making ‘open loop’ measurements – measurements on devices with no direct access to the microphone or speaker for longer than any other test equipment supplier.
Smart recorder iot driver#
microphone array testing and beamforming, driver testing, speakerphone testing to TIA standards, active noise cancellation, voice quality measurements and speech recognition metrics.įurthermore, Listen, Inc. has unrivalled expertise in the various tests used in voice activated audio devices – e.g. SoundCheck’s long history as a multipurpose electroacoustic test system means that Listen, Inc. It measures a full range of characteristics such as driver performance, microphone array performance, speech recognition and voice quality metrics via wired, wireless/Bluetooth, cloud, USB, or debug port connections. SoundCheck offers simple, fast and accurate ‘open loop’ testing of any smart device – no matter what the form factor, functionality, connector, or additional features.
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