We found one dictionary that defines the word signal levels:

Tech (1 matching dictionary)

1. Rane Professional Audio Reference (No longer online)

(Note: See signal_level as well.)

Definitions from WordNet (signal level) ▸ noun:  the amplitude level of the desired signal ▸ Also see signal_level ▸ Words similar to signal levels ▸ Usage examples for signal levels ▸ Idioms related to signal levels ▸ Wikipedia articles (New!) ▸ Words that often appear near signal levels ▸ Rhymes of signal levels ▸ Invented words related to signal levels