100 Things #60: Making Real-Time Measurements with Live Curves

Live curves is a new feature in SoundCheck that lets you combine multiple real-time measurements on the RTA and FFT with static curves on the same graph. This lets you compare RTA and FFT curves, as well as comparing either to a static curve. This has applications for live tuning, automotive, and ANC audio testing.

Make Real Time Measurements with Live Curves

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Learn more about Live Curves in SoundCheck. Information can be found in SoundCheck 21, 20, and 19 new features under RTA and FFT.


Video Script:

‘Live curves’ is a new feature in SoundCheck that lets you drag any real-time measurements from the RTA or Spectrum Analyzer to another graph, or similarly drag any static curve from another graph to the RTA or spectrum analyzer. This lets you compare any live measurement to a static curve, for example, for tuning an automotive cabin, or a headphone response to a target curve.

We introduced the multi-channel RTA back in version 19, and the multi-channel FFT Analyzer in version 21. Both these instruments let you display multiple spectra at once, and also perform calculations such as power summing of multiple sources, subtraction of one curve from another and curve averaging. You can even display both an FFT measurement and an RTA measurement side by side on the same instrument.

When a multi instrument is opened, a live curve is created in the memory list. A live curve is indicated with a green circle. Just like a static curve, you can drag a live curve into any XY display graph [short live shot], and you can also add  a static curve into a multi instrument display [short live shot].

Here I have a static target curve in a graphic display. I can drag my live RTA curve onto this graph. Then I can add low pass and high pass filters to my signal to better match the target curve.

This is incredibly powerful for real time tuning applications. Check it out for yourself! What would you tune using SoundCheck? Let us know in the comments!