Fig. 7 | Scientific Reports

Fig. 7

From: Graphene-infused terracotta acoustic sound amplifiers

Fig. 7

The figure shows the loudness comparison plots for normal and graphene-based terracotta amplifiers. The red color line indicates the loudness of the normal amplifier, and the black color line indicates the loudness variation for the graphene-based amplifier. The graphene-based terracotta amplifier shows higher loudness than the normal terracotta for different volume levels.

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