10. SoundCheck System-SoundCheck 20

SoundCheck Software is the heart of a SoundCheck test system. It generates all the test signals, performs analysis and displays results according to the user’s configuration.

SoundCheck软件是SoundCheck测试系统的核心。它会生成所有测试信号，执行分析并根据用户的配置显示结果。

Sound Check System

While it is an extremely powerful and flexible product, its capabilities can be described in 3 parts, First, the test Sequences (how tests are configured by the operator), Second, Virtual Instruments  (software implementation of standard audio test equipment) and the thrid one,Data Analysis (the various analyses that SoundCheck can perform on your data) 

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它是一个非常强大和灵活的产品，但它的功能可以分为三个部分来描述：第一，测试序列（如何由运营商配置测试），第二，虚拟仪器（标准音频测试设备的软件实现）和第三部分，数据分析（SoundCheck可以对您的数据执行的各种分析）

S&V Samford SoundCheck Software 

Listen Released SoundCheck Version 20 

SoundCheck 20 introduces our state-of-the-art perceptual distortion algorithm for end-of-line testing - Enhanced Perceptual Rub & Buzz. It also includes a host of new features for multichannel and communications testing, increasing its capabilities for audio measurement of smart speakers, infotainment systems, headphones and hearables, and other voice-activated and multichannel devices

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Enhanced Perceptual Rub & Buzz (ePRB)

Listen’s new Perceptual Rub & Buzz algorithm is a reliable and repeatable method of detecting audible Rub & Buzz faults on the production line. This offers manufacturers the option to increase yield by rejecting only those devices with audible distortion defects. Based on the sound psychoacoustic principles used in Listen’s industry-standard 2011 Perceptual Rub & Buzz algorithm, the new refinements improve listener correlation and demonstrate significantly better noise rejection to offer unrivaled repeatability. This makes limit setting easier and increases reliability, especially in production environments. The algorithm measures perceptual Rub & Buzz at the same time as all other end-of-line measurements with a single stepped sine wave stimulus, enabling this valuable analysis to be added to production line tests with no extension in test time.

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New Multichannel RTA functionality

The multichannel Real Time Analyzer now includes expanded functionality for real time observation of audio signals. It displays multiple channels simultaneously, and offers real time calculation and display of channel addition, subtraction, maximum, minimum and power average. Applications for this new feature include real-time observation of active noise cancellation, automotive industry standard 6-microphone array infotainment measurements, validating headphone seal on a test head prior to measurement by comparing left and right earphone response, and more. Paired with the AmpConnect 621 multichannel audio interface, it offers unmatched functionality for multichannel measurements on a wide array of devices, especially those featuring dynamic signal processing. RTA curves are now seamlessly integrated with SoundCheck’s standard graphs. Live curves from the RTA are displayed in the memory list and can be dragged and dropped into any graph for easy comparison to limits and reference curves. This is useful for quick comparisons to reference standards or golden units, tuning automotive infotainment systems, and more.

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Updated Signal Generator
A complete overhaul of the signal generator brings additional functionality and simplified operation, particularly when using wav files. In addition to standard audio stimuli (sine, white noise, pink noise, multitone) with user-selected sampling rates and resolution, it can play any wav file, any memory list file, and any complex waveform created by the stimulus editor. The level can be referenced to Peak, dB or RMS. The signal can be equalized in real time, and custom EQ curves applied, which is useful when using a non-flat source such as a mouth simulator. A specific portion of a waveform can be selected to play, either by selecting a start and stop time in seconds, or by examining the waveform. Outputs from 2 or more signal generators can be mixed on the same channel. Waveforms from multiple signal generators can be synchronized, or a delay added for non-coherent playback, for example when generating background noise. Signals may be played for a fixed duration, a fixed number of times, or in a continuous loop. Slider control, in addition to numerical entry, simplifies use.

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POLQA
The optional POLQA (Perceptual Objective Listening Quality Analysis) module brings POLQA analysis right into SoundCheck, for perceptual measurements of speech degradation in communications applications ranging from telephones to smart devices. It may be used to assess the impact of noise reduction algorithms, evaluate Bluetooth degradation due to packet loss, or to analyze distortions introduced into the audio path. Naturally, it can be used within sequences to accelerate and simplify test procedures.

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Batch Processing of external files
While SoundCheck has offered batch processing of collected data since 2012, version 20 extends this with the ability to automatically load and process external data. This is useful in any application where it is desirable to automate the testing of a large number of external data files via a sequence, for example wav files of speech recordings. This has many uses in communications testing, for example in testing the Mean Opinion Score (MOS) of degraded speech files.

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(YouKu) Listen 在家工作系列的播單

Youtube Listen Inc. Work From Home Series Video 

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S&V Samford SoundCheck Software 

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