Importing Correction Curves for Calibration
Easily calibrate your measurement chain by importing correction curves directly into SoundCheck. In this video, we’ll show you how to load external data, apply it to a signal path, invert response curves when needed, and ensure your corrections are properly applied during analysis for accurate test results.
Additional Resources for SoundCheck
Detailed explanations of how to use SoundCheck can be found in the SoundCheck manual.
Video Transcript: Importing Correction Curves for Calibration
It’s simple to calibrate signal paths in SoundCheck using either imported data or measurements you’ve made. This is useful, for example, if you need a frequency and phase correction curve for an input transducer, or a DRP to ERP correction.
To apply a calibration curve, the calibration data first needs to be in the memory list. If your data is in an external file, for example if you have a microphone frequency response curve from a calibration lab, you just select “open data” from the data menu of the memory list… and you can see now it shows up in the list. SoundCheck supports a wide range of formats from our own .dat format to txt and csv files.
Alternatively, you can use a recall step to bring your measured data into the memory list.
Now we have our correction curve loaded into the Memory List, we can use this curve to overwrite the calibrated device. Let’s open up the calibration window, and we’ll select the ‘copy from memory list’ button and choose our source curve. You can either apply the curve as it is, or invert it using this “invert curve” checkbox. You would use this, for example, if you want to remove the frequency response curve of the microphone from your measurement.
So, let’s check that box, and we’ll hit “apply” to save it, and OK.
Now we’ve added the appropriate correction curve to the signal path, the final step is to apply this new correction to our input response by enabling the checkbox “Apply Correction In” in the analysis step. It’s important to make sure this is selected otherwise, the correction will not be applied.
