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| 8126155 | Remote audio device management system |
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| 8077874 | Active noise reduction microphone placing |
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| 8054992 | High frequency compensating |
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| 8050426 | Digital mixer apparatus and editing method therefor |
| 8050424 | Speaker system, audio amplifier and audio system |
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| 8000482 | Microphone array processing system for noisy multipath environmen... |
| 8000481 | Speaker array and microphone array |
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| 7956766 | Apparatus operating system |