Lossy? Strange line/peak at 19Khz

[Dylz]

Hey,
I was just checking some shows for a trade before I copy them and I checked one show that contains a strange phenomena.

The frequency analysis shows a random, strong peak at 19KHZ
The spectral view shows a strong line at that same frequency.

www.swis.net.au/~bendil.dsl/offspring95fa.gif
www.swis.net.au/~bendil.dsl/offspring95sa.jpg

I've seen this before but can someone tell me what this weird line indicates? Where does it come from?

Im assuming it's mp3 or lossy of some description.

thanks

-Dylz

[U2Lynne]

I believe that is from an FM source. Someone else will come confirm or tell me I am sooo wrong!

[paddington]

Positively, US FM Analog Radio (not IBOC). The stereo pilot is at 19.0kHz.

[Dylz]

thanks, can anyone confirm this?

[Dylz]

cool thanks!

[Dylz]

a slightly similar case... i can't work out if this is lossy
it's an audience recording

FREQ ANALYSIS
www.swis.net.au/~bendil.dsl/catempirefa.jpg

SPECTRAL
www.swis.net.au/~bendil.dsl/catempiresa.gif

SPECTRAL 2 second zoom
www.swis.net.au/~bendil.dsl/catempiresa2.gif

[spontabmark]

could be minidisc lp4

[ssamadhi97]

I'd have to agree, I think mdlp is the only (common) codec that shoots such holes into the spectrum.

(omg Cat Empire? saw these guys in concert last month, they rocked my socks off)

[Dylz]

Cool! Thanks. It's gonan take a while for me to identify the diff between MD and MP3. arg!

Cat Empire are cool!