This is the 15831st most frequent Polish word.
słyszalną
"Audible" (capable of being heard).
The word 'słyszalną' is used to describe the characteristic of the melody being distinctly perceivable by hearing.
W operze usłyszeli melodię tak słyszalną, że zaparło im dech.
In the opera, they heard a melody so audible that it took their breath away.
In this context, 'słyszalną' describes the laugh as being easily perceivable above the surrounding noise.
Mimo hałasu na ulicy, ich śmiech był wyraźnie słyszalną nutą radości.
Despite the noise on the street, their laughter was a clearly audible note of joy.
Here, 'słyszalna' qualifies the conversation, indicating its property of being heard clearly.