Audio Measurement Blog
This is a new section on our website where our experts (mostly our technical support team) share tips and tricks on using SoundCheck and optimizing your audio measurements.
Working from home with SoundCheck
Following questions from some SoundCheck users who had watched #3 in this series (sequence optimization), Steve Tatarunis takes a look at the measurement confidence function in SoundCheck, and explains the trade-offs between speed and accuracy when choosing a step size to optimize your measurement.
Anastassia Tolpygo demonstrates some neat features of virtual instruments that you may not have seen before. These enable you to make a quick distortion measurements, accurately measure frequencies at very high resolution, and plot and save curves over time using just the virtual instruments without the need for a sequence step.
In this short video, Steve Tatarunis takes a deeper dive into the Offline Statistics functionality in SoundCheck, demonstrating how you can run statistical analyses from home on data from your production facility or overseas contract manufacturer. No hardware required – just your computer with SoundCheck and some measured data!
What better way to perfect your data output options than when you have some uninterrupted SoundCheck time at home! SoundCheck saves data in many different user defined ways, and saving to Office apps such as Word and Excel is just one of them. Most people just use the default settings to create a quick visual output, but the key to making your data work for you is Custom Templates and Autosave Steps. Watch this short video to learn more.
While you are working from home, optimize your SoundCheck sequences by tweaking your limits for optimum quality and yield. Devin Vaillancourt explains the different types of limits available (absolute, floating, aligned, and more), and once you have explored the different types, you can test out different limit configurations using saved data from products that you have already measured.
Cam Ruffle-Deignan walks you through a demonstration of SoundMap, SoundCheck’s Time-Frequency analysis module, showing how Short Time Fourier Transform, CSD, Wigner Ville and Wavelet analyses can be used for detailed offline analysis of devices. Time-Frequency analysis methods are useful for impulse response analysis and detection of loose particles and Rub & Buzz in loudspeakers and identification of transient effects such as drop out in digital devices including VoIP and Bluetooth headsets.
Learn how to level-up your SoundCheck sequence using Custom Steps – LabVIEW VIs that can be used as steps in SoundCheck sequences to implement operations that cannot be done natively in SoundCheck. A selection of custom step templates built into SoundCheck accelerates the development of custom steps with examples that allow you to open and close virtual instruments, control turntables, read/write serial numbers and even open any .exe file such as a Python script. Devin Vaillancourt demonstrates how to use this powerful feature.
There are many times when it is desirable to display multiple data sets on one graph – for example, testing multichannel devices, comparing devices, comparing measurements to the fundamental, comparing EQ curves, etc. In this short video, Steve Tatarunis demonstrates how to display multiple curves on one graph, both by simply dragging and dropping and also automatically via a sequence.
In this short video, Cam Ruffle-Deignan walks you through how to predict listener preference based on the Harman Target Curve. This free sequence (which can be downloaded here) can recall previously saved data as well as capture new data, making this a great ‘work from home’ project if you have previously saved measurement data on your headphones.
Cam Ruffle-Deignan demonstrates batch processing and analysis – powerful tools that enable groups of waveforms (or other forms of data) to be processed with just one step, either in a sequence or offline.This simplifies the processing of large volumes of data in offline mode, and is useful in multi-channel test system sequences.
Devin Vaillancourt demonstrates both manual and automated ways to save data from SoundCheck to be used with other programs including Excel and Matlab. He also shows how to save waveforms as .WAV files which is an important tool for open loop testing.
Did you know that you can set your own color palette preferences for graphs and customize your SoundCheck desktop? Cam Ruffle-Deignan shows you how.
Need to collaborate on a project? Devin Vaillancourt shows you how to export a sequence (including one with dependent files) to share with a colleague.
Sometimes you may want to use your laptop at home to remotely run tests on your computer in your lab. You may need to adjust your audio signal paths to do this successfully. This short video shows you how.
You’re stuck working from home – so are we! Take advantage of this time to figure out how to do that thing you’ve always wanted to do in SoundCheck but didn’t know how. Our experts are here to help by phone, email and screenshare!
Les Quindipan reviews the new features in SoundCheck 18 – something that you can easily ‘play along with’ at home if you already have this version. (Hint: if you don’t have SoundCheck 18, you can request a demo version via our website. You won’t be able to actually make measurements, but you can explore the new functionality!)
Cam Ruffle-Deignan explains how the Recall Step can be used to run sequences and perform advanced calculations even when you don’t have access to hardware
In this video, Mark Latshaw tours you through some of the resources that are available on the Listen website to help you work from home with SoundCheck and to improve your audio testing knowledge in general, including instructional videos, technical papers, manuals and the support knowledgebase.
Les Quindipan demonstrates how easy it is to upgrade to SoundCheck version 18. If you have been putting off upgrading because you haven’t had time, then use that WFH time to make it happen! Even if you are upgrading from a really early version (prior to V13) this video makes it simple.
In this video, Steve Tatarunis shows where to find, and how to use, a selection of example test sequences included with your SoundCheck installation. These can save considerable amounts of time developing tests as you can start with one of these and modify it to meet your needs – certainly worth checking out if your plan for the next few weeks involves developing some new sequences or figuring out how to test a device!
Steve Tatarunis discusses the various options available to you if you are working from home and don’t have access to a calibrated audio interface, including onboard sound, virtual audio cable, Soundflower and USB speaker/microphone.
In this short video, Cam Ruffle-Deignan explains how you can use the offline menu to experiment with analysis steps using previously-captured data. This can be treated as a scratch pad for testing out different algorithms and step configurations, and these be saved for later use in sequences.
In this short video, Devin Vaillancourt explains ways in which you can optimize your SoundCheck sequences when working from home without full access to your equipment.
In this short video, Les Quindipan explains how to get the demo version of SoundCheck up and running when you don’t have your usual hardware available, outlines its functionality and makes suggestions as to useful things you can do using this version when you don’t have access to your lab.
In this short video, Steve Tatarunis explains how to get your SoundCheck system up and running from home, and what resources are available to help.