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Multi-functional audio and video control box

Electrical audio signal processing systems and devices – Switching
Patent

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Mute apparatus and mute method

Electrical audio signal processing systems and devices – Switching
Reexamination Certificate

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Muting circuit for computer having dual audio boards

Electrical audio signal processing systems and devices – Switching
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Power supply noise immunity for audio amplifier

Electrical audio signal processing systems and devices – Switching
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Sequential audio switcher

Electrical audio signal processing systems and devices – Switching
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Speaker system of utilizing pulse width modulation signals...

Electrical audio signal processing systems and devices – Switching
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Stero speaker mixer

Electrical audio signal processing systems and devices – Switching
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Switching circuit built in IC for earphone and loudspeaker...

Electrical audio signal processing systems and devices – Switching
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System and method for multiplexing control signals over data sig

Electrical audio signal processing systems and devices – Switching
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System and method for sensing a sound system

Electrical audio signal processing systems and devices – Switching
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Techniques for audio transducer switching under programmatic...

Electrical audio signal processing systems and devices – Switching
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Video/audio output device and external speaker control...

Electrical audio signal processing systems and devices – Switching
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Video/audio output device and external speaker control...

Electrical audio signal processing systems and devices – Switching
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