TTS Null Tester v1.0
Supported formats: AAC, ALAC, FLAC, MP3 and WAV
Supported formats: AAC, ALAC, FLAC, MP3 and WAV
Load two audio files to automatically perform a null test and measure the difference in dB LUFS, ESR, MAE, MSE and MRSTFT.
You can also download the delta audio file.
This script autmoatically matches the loudness and time-aligns the two files using cross-correlation and then inverts the polarity on one.
Even though the files don't need to be aligned manually before the upload, they must be within 1000 samples from each other and on the same polarity, otherwise the auto-alingment and polarity inversion won't work correctly.
The values to look at are the ones in bigger font:
'Attenuation' (the difference in dB LUFS between the first file and the delta) and 'ESR' (Error-to-Signal Ratio).
These give a better picture of the results cuz they don't depend on the loudness/level of the uploaded files.
Please put a link to this page if you share your null test results on youtube videos, social media, forums, etc., thanks.
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