Audio

A nice set of audio lines, perfect for a music project or podcast art. Use brighter colors on dark or try stacking the brushes in pastel for a really unusual image background.

Premium results from Shutterstock
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Podcast sound waves and audio soundwave of voice message records, vector icons. Podcast sound waves for online audio streaming and podcasting or music player and mobile phone voice message soundwaves Audio thin line icons. Editable stroke. Pixel perfect. Audio button thin line icon set. Containing music, sound, speaker volume, play, video, pause, equalizer, loudspeaker, mute, microphone, headset. Vector illustration Simple Set of Museum Related Vector Line Icons. 
Contains such Icons as Tourist Group, Sculpture, Art Gallery and more. Editable Stroke. 48x48 Pixel Perfect.
Audio
Premium results from Shutterstock:
Music Player Bundle,  Music Player Display Audio Control Voice Message UI Design with Play and Stop Preview Voice message bubble, audio chat or messenger interface, vector UI UX. Voice message bubbles, chat audio record play records for mobile phone Circular sound waves, depicting audio music, round symbols of voice, icons and logos for equalizers, radial spectrum designs, ring patterns. Flat vector illustrations isolated on white background.

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