A sound graph made of parallel vertical straight lines of varying lenghts all scattered across a horizontal line.

Sound Lines

A music note next to a wifi or a sound icon, represented by three curved lines.

Music Note And Wifi Or Sound Icon

A megaphone with sound lines seen from the side.

A volume icon for sound control represented by a basic speakerphone with sound waves. 

A megaphone or loudspeaker with a handle and zigzag lines indicating sound, facing side.

A row of parallel straight lines of ascending and descending sizes, such as sound waves.

A wavy line sound graph with irregular dips.