abstract sound waveform, audio frequency, rhythm, music pulse, graphic

visualization calligraphy background represents frequency abstract waveform stylized lighting graphic drawing cartoon rhythm design sketch number circle sound audio music pulse black light brand white gray data font iron text line logo art waveform sound audio music frequency rhythm pulse signal vibration oscillation wave graphics design abstract pattern technology digital data visualization art graphic soundwave audiowave musicwave vector line black gray background style curve peak trough amplitude energy movement flow dynamic intensity melody beat tempo harmonic pitch volume oscilloscope seismic ecg