FrequenSee App to calibrate Ultrasonic volume

[Shannon]

@Shannon
I know...more stupid questions
I have a question that is been bugging me for some time...
Volume of the ultrasonic track....

I play the ultrasonic on an first gen Ipod nano (not that it matters...and I cant base the volume on clicks), on speakers....and adjust the volume with frequensee on my cell phone.

It seems I can't find anywhere on the forum or site the value of -db that should be at my listening distance....

I tend to put it around -30db at the place where I sit or lay (not measured at the speakers).

Am I doing it wrong?
How much -db should it be at my listening distance?
Btw the room is really big (open space) so take that in a variable.
Also keep in mind that I cannot effectively calibrate the volume with masked subliminal, cause I can't hear a range from 10db to 20db .

We measure volume at the source of the audio, because that is the way it must be done if you are playing the program on a cell phone and running FrequenSee on that same cell phone.  Even that isn't an ideal way to do it, because each model of phone puts the speaker and microphone in different locations relative to pone another.  But it's what we have to work with.

I have no way to measure what the volume should be at listening distance because that is so variable.  So you need to use your cell phone to measure the volume at the source, which in this case is the speakers.

One way to deal with this is play a masked track and adjust the volume to your liking for your listening distance, and then use whatever other track you prefer.  You say this isn't possible because you can't hear a range from 10 to 20 dB.  I'm not sure I understand that - decibels is volume.  Are you sure you don't mean 10 to 20 Hz (pitch)?  Is there something with your speakers or ears that would prevent hearing that specific volume range?