This is the 10930th most frequent German word.
schallmauer
"Schallmauer" means "sound barrier" in English.
Here, 'Schallmauer' refers to the physical sound barrier – the speed at which sound travels in a given medium, often used when discussing aviation and acoustics.
Das Überschallflugzeug durchbrach die Schallmauer mit einem lauten Knall.
The supersonic aircraft broke through the sound barrier with a loud bang.
In this metaphorical usage, 'Schallmauer' represents a significant limit or barrier in context to the success or achievement.
Die Band durchbrach die Schallmauer des Erfolgs mit ihrem neuen Album.
The band broke through the barrier of success with their new album.
Here, 'Schallmauer' is used metaphorically to exaggerate the loudness of the music.