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 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. 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. You can set the noise (or quietness) threshold at which auto pause activates.SoundCheck offers simple, fast and accurate ‘open loop’ testing of any smart device – no matter what the form factor, functionality, connector, or additional features.A lower sampling rate saves disk space while a higher rate gives better audio quality. The sampling rate can be set anywhere between 8000-44,100Hz.There is a setting that controls the number of seconds the forward and back buttons move you if 30 seconds is not appropriate.Smart recorder provides a rich set of system settings to control its behavior: (Use the preference window to change the format). Smart Recorder provides an export function that creates an HTML file with your tags and an audio file of a format of your choosing.A slider allows you to quickly navigate to any part of a long recording.A back button allows you to repeat the last 30 seconds of the recording.A forward arrow skips 30 seconds of the recording.Multi speed playback allows you to skim uninteresting conversations quickly.Recording starts again when talking resumes-perfect for conference room meetings. Auto pause suspends recording when there is no sound.Time based tags allow you to quickly jump back to important portions of a recording.iCloud allows you to easily exchange recordings with Smart Recorder on iOS. During playback, you can change the speed to quickly skim through less interesting pieces of a meeting. It allows the typing of textual notes as time based tags while recording. It is ideal for recording classes, meetings, memos, lectures, to do lists and even your kids. Smart Recorder is a full featured audio recorder.
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