iPhone Audio Output Question...

[broken_arrow]

Greetings, currently calibrating the meters on my Tascam M-216 mixing board, so I downloaded a tone oscillator on my iPhone.

Unfortunately, the app simply states "db" on the volume control. I just want to make sure that db in this case indeed means "dbfs". That is how the audio output from an iPhone would be measured, correct?

Thanks!

 

[MrWrenchey]

That depends... Does it have a negative sign next to the number? If it doesn't, then probably not.

 

[Bobbsy]

Unless, your oscillator app is very clever and takes over your phone (which I doubt) I suspect it's not actually calibrated in any way and will depend on how you set the output level on your phone.

 

[Massive Master]

That's about what I'd be thinking.

 

[broken_arrow]

The volume on the app goes from -75 "dB" to 0 "dB". Since the number can only be negative or 0, this is what led me to believe that the "dB" was actually dBfs.

It's a real problem with these apps - many simply have a "volume" slider with no indication of dBu or dBfs. I'm not sure how they expect you to properly use a tone oscillator if you don't know what volume you pumping through your system...

 

[guitarplayr82]

Maybe you could email the developer and ask them directly?