[givinguflac]

I looked through the deeper explanation and found this interesting:

“Performing a simple experiment where we have 5 separate components

1000 Hz sine probe 57 dB SPL 750 Hz sine masker A at 71dB SPL 800 Hz sine masker B at 71 dB SPL 850 Hz sine masker C at 67 dB SPL 900 Hz sine masker D at 65 dB SPL I record the following data

When playing probe + masker A through D individually I experience the probe approximately as intensely as a 1000Hz tone at 53dB SPL. When playing probe + all maskers I experience the probe approximately as intensely as a 1000Hz tone at 48dB SPL.”

I would be very interested in understanding more about their testing methodology and hardware setup especially.

Is the perceiver a trained listener? Are they using headphones or speakers or some other transducer method?

It's awfully difficult to say that there is equivalent perceived SPL for different frequency domains, even as a trained listener. Especially given the different frequency response for different listening setups.

The average user has no chance; hence my curiosity of their specific credentials considering they’re building an entirely new perceptual model based on that.

[DoctorOetker]

>It's awfully difficult to say that there is equivalent perceived SPL for different frequency domains, even as a trained listener.

The snippet you quote doesn't claim comparing intensities at different frequencies.

He is comparing only perceived 1kHz intensities, (in the presence or absence of maskers at other frequencies, whose intensity is not subjectively being scored)

[givinguflac]

Ah, thank you for clarifying, I misunderstood but still have the same curiosity about their methods .