The sound quality would be poor, components would have to be located very close together, the receiver could only pick up strong local broadcast stations, and still more quality issues.

音响质量会非常差，部件必须挨得很近，接收器只能接收当地广播电台的强功率信号，还会存在其他质量问题。

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The signal quality is still low. Move the receiver closer to the wireless mouse, and then click Test Again.

信号质量仍然较低。请将接收器移动到距离无线鼠标较近的位置，然后单击“ 再次测试”。

youdao

No signal quality information was received. Move the receiver closer to your wireless keyboard, and then click Test Again.

未接收到信号质量信息。请将接收器移动到距离无线键盘较近的位置，然后单击“ 再次测试”。

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Smart Sonic Receiver technology transmits clear audio quality to the user through vibrations in the handset's display screen - a technology based on Kyocera's proprietary advanced ceramic technology.

ENGADGET: Kyocera announces Digno S smartphone for Japan, promises over 18 hours of talk time in three colors

"Digital TV uses the same picture quality as a current TV set - it's just the receiver that will be different, " said Which? in its April report.

BBC: Digital technology - pros and cons