birdys meaning?

[shaharhada]

The effect of jitter on the signal depends on the nature of the jitter. Random jitter tends to add broadband noise while periodic jitter tends to add errant spectral components, "birdys"
What is birdfys?
from the source:
https://en.wikipedia.org/wiki/Jitter

 

[Eximo]

Apparently it is a term from radio. Certain signal distortions would come through as sounds similar to bird calls.

 

[shaharhada]

Apparently it is a term from radio. Certain signal distortions would come through as sounds similar to bird calls.

Thanks.