[LAD] Looking for the cause of pulsating noises

[Ralf Mardorf]

Olivier Guilyardi wrote:
> He also reported the following: "if I rig up a TRRS 3.5 mm jack to XLR adapter
> and use a "real" microphone the recording seems to be clean (though with other
> issues, perhaps ground loops or impedance mismatch or something)".
>   

*!*

> On the software side, couldn't a sample rate conversion produce that kind of
> pulsations? I'm not doing any, but I haven't checked Android sources about this.
>   

I don't have knowledge about this and at the moment I'm a little bit 
pissed of all the issues we could get, when using the computer ;).
I tend a little bit to prefer analog equipment at the moment, but your 
noise issue could be an anlog issue :D.

Regarding to this or similar strange pulsations, I heard this for 
recordings done with cheap consumer microphones and cables using analog 
equipment.

No doubt, there are all kinds of issues possible, regarding to the 
digital domain, but this noise or a similar noise is something I *very 
often* heard for recordings done with (very) cheap consumer equipment.

:)
Ralf