This is a loudspeaker, which has three voiceprints, representing its high volume.
The color of voiceprint presented by different platforms is different, such as orange, gray, black, blue, etc. The appearance of voiceprint is not consistent, some platforms show three arcs, while others show three circles. In addition, the au by KDDI platform shows a simple speaker, which is golden and the opening position faces to the left; While the opening positions of other platform speakers are all towards the right.
The emoji can be used not only to refer specifically to the high volume speaker, but also to indicate the volume increase of electronic devices such as computers or mobile phones.
