Re: [AUDITORY] Level setting with headphones + own device

[Bob Masta <audio@xxxxxxxxxxx>]

I don't know if this would apply to your experiments, but here's the method
that I used for one that involved listening to white noise at 30 dB above
threshold:  Subjects first adjusted their volume control while listening to
on-off pulsing noise that was generated with the raw signal waveform reduced by
30 dB. When the subjects found their threshold, the waveform was restored to
its full level, thus 30 dB above threshold.

This works because devices have separate attenuators that operate on the raw
signal output.  The attenuators may not have any known calibration that you can
control, but you *do* have absolute control over the raw signal level.

Bob Masta

========================
On 26 Mar 2026 at 15:40, David Jackson Morris wrote:

>
>     Dear auditory colleagues,
>      
>     Is anyone aware of a robust volume setting procedure for when participants
>     are doing speech perception tasks with their own devices, say with online
>     testing (headphones connected to tablets, laptops, etc.)?   I know there
>     are some convincing binaural tests to check people are using headphones, but
>     what about the overall level setting?   Best David         David
>     Jackson Morris Associate Professor Ph.D., L.T.C.L.   University of
>     Copenhagen Department of Nordic Studies and Linguistics Audiology and Speech
>     Pathology Bygning 22 Emil Holms Kanal 2 2300 Copenhagen S  
>     www.researchprofiles.ku.dk/en/persons/david-jackson-morris/   Logo for
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