| 1 | Her voice over the loudspeaker was distorted. | |
| 2 | The pen contains a microphone, speaker and camera. | |
| 3 | A loudspeaker designed to reproduce bass frequencies. | |
| 4 | The 500 speakers required the power of an entire district power plant. | |
| 5 | The only buttons on the S5 speaker console itself are volume and mute. |
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