Hands-On with Xiaomi MIX
piezoelectric speakers
>>>Your choice of words is confusing.
I used a Kyocera Torque phone with Kyocera's "Smart Sonic" speaker for a few years, it worked great. Besides giving great sound when held to the ear (even when wearing hearing protection earmuffs around noisy equipment), the Kyocera Smart Sonic speaker could deliver ear-splitting speakerphone performance. So in Kyocera's case, it did NOT rely simply on bone conduction, and Smart Sonic emitted PLENTY of sound directly to the air, no flesh contact necessary. In other words, Kyoce...
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