ClearOne comm AP800 operation manual Glossary ~ A-D

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Glossary ~ A–D

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Glossary

 

Acoustic Echo Cancellation (AEC)

A process in which acoustical echo is

removed from a signal. AEC can be used to remove unwanted signals from mic audio if the unwanted acoustic signal is available separately as an electronic signal.

Adaptive Ambient Mode An automixing function that dynamically changes the ambient noise reference level based on a moving average of the actual noise floor of the room as picked up by the microphones.

Ambient Level The sound pressure level (SPL) of a room when no one is speaking and no external audio is present. Also known as noise floor.

Ambient Noise The existing room-level noise, such as that caused by ventilation systems, paper shuffling, and background chatter.

Attenuation A reduction of signal amplitude.

Automatic Gain Control (AGC) Automatically increases or decreases audio gain to maintain a consistent audio level.

Automatic Microphone Mixer A microphone mixer that automatically activates and deactivates microphone channels. This serves to increase intelligibility of the audio by reducing reverberation and noise picked up by the microphones.

Baud Rate The number of signal transitions per second, or the clock rate of the serial bit stream in hertz. Given 7 or 8 bits for data plus start and stop, the approximate ASCII character transmission rate is one-tenth the baud rate.

Chairman Override Provides gating priority for all microphones selected for the chairman override group. When a mic in this group gates on, all microphones not included in this group gate off.

Clipping A condition in which a signal level exceeds the maximum level a circuit can handle. This is usually caused by overdriving an input. It always causes distortion and typically leads to listener fatigue and accelerated failure of loudspeaker drivers.

Decay Rate The rate at which an automatic mixer attenuates a microphone channel’s audio level.

Digital Hybrid A telephone hybrid that uses digital signal processing to provide excellent audio separation between the send and receive audio paths.

Digital Signal Processor (DSP) A high speed digital numeric processor that can rapidly calculate complex mathematical equations. The DSP is the most important component used in ClearOne digital products.

Technical Services Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760

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Contents AP800 Audio Conferencing System AP800 Installation ClearOne Part No July 2002 Rev Table of Contents Appendices AP-Ware SoftwareProduct Overview IntroductionFeatures Sales and Customer Service Professional Services GroupTechnical Support ClearOne Communications EuMEA GmbHFront panel UnpackingControls and Connections Introduction ~ Controls and Connections Rear panelLink network will allow interconnection of up to eight Link NetworkLink bus Equipment placement Power requirementsEquipment Requirements Auxiliary equipmentTo connect the AP800 Hardware SetupConnecting the unit Link connections Installation ~ InstallationNetworking Units To set the device ID Device IDsTo create a G-Link network Installation ~ Installation Device types Mixer ModeEC reference To set mixer modeErrors Switching from one main menu category to another Installation ~ LCD ProgrammingLCD Programming Menu TreesInstallation ~ LCD Programming Adjusting a valueSystem parameters Select PresetLock Panel Set PasscodeDevice ID PA Adaptive ModeUnit ID Gate ParametersMaximum Number of Mics Last Mic ModeFirst Mic Priority Gate RatioDecay Rate Hold TimeManual Ambient RS-232To determine ambient level Baud RateClear Password Modem ModeSerial Overrun Errors TimeoutInputs 1-8, Input Global Input ParametersThree-Band EQ High Pass FilterChairman Mic Adaptive AmbientNLP Adjust Echo CancellerInputs A, B, C, D AEC ReferenceRouting Parameters Output ParametersOutputs 1-8, A-D Subbus 1Internal Subbus Echo Cancellation SetupRouting Guidelines Slave Unit EC Reference busMaster Unit Inputs, Outputs, ERL, and Erle Default MeterMeter Parameters Technical Services Group ~ 1-800-283-5936 USA ~ 64MB RAM DescriptionAP-Ware software requirements To install AP-Ware Installing AP-WareVolume Control Remote ControlTo increase volume To decrease volumeTo mute an output MutingTo mute an input FCC, CSA, CE Appendix a SpecificationsThis warranty is void if Appendix B WarrantyAppendices ~ Appendix C Compliance Appendix C ComplianceFCC Part 15 compliance Control/Status a pinout Appendix D Connector PinoutsPin Number Definable Status Default Description Control/Status B pinout Pin Number User Definable* Status Default Description+5VDC Control/Status Pinout NoteAppendices ~ Appendix E Accessories Appendix E AccessoriesRS-232 COM DCE Port Pinout Pin Number ControlCommand syntax Appendix F Serial CommandsAppendices ~ Appendix F Serial Commands MrefCommand Function AP800 Serial Commands40Appendices ~ Appendix F Serial Commands Error Codes AGC AambAmblvl ExplanationDecay BaudChairo DfltmErle ERLFPP FlowFMP Gate GainExamples ExampleGratio GmodeHold LFPMaster LMOLVL MEQ MdmodeDevice Mdmode Device MEQ CH BandMinit MHPMline MmaxMtrx MpassMref InputMtrx 18 OutputmixNLP MuteDevice Mute CH W Device NLP CHOffa NOMDevice NOM CH Device PAAExample PcmdPevnt Event List LFP, PRESET, MUTE, GAIN, AGC, EQ, GMODE, ChairoDevice Pevnt Location Event EventTout PresetRefsel VER UIDDevice UID Device VER~ Appendix G SWorksheets Routing Matrix SetupInputs = Gated AppendicesAppendices ~ Appendix G Worksheets Systemwide Parameters Auto Mix ParametersBus Glossary ~ A-D GlossaryGlossary ~ E-S Glossary ~ T-Z Index ~ A-Z Index

AP800 specifications

ClearOne has established itself as a leader in the audio and video communication technology space, and the ClearOne COMM AP800 is a prime example of the company's commitment to providing high-quality communication solutions. The AP800 is an advanced audio processing unit specifically designed for professional audio environments, including conference rooms, auditoriums, and other large venues that require exceptional audio clarity and performance.

One of the standout features of the ClearOne COMM AP800 is its robust digital signal processing capabilities. It is equipped with powerful, sophisticated algorithms that enhance audio quality by minimizing background noise and echo, ensuring crystal-clear communication even in challenging acoustic environments. This makes the AP800 ideal for videoconferencing, teleconferencing, and live events where audio fidelity is paramount.

The AP800 features multiple microphone inputs, allowing users to connect a variety of microphone types, including boundary microphones and handheld units. This versatility enables configuration for different setups, ensuring that audio coverage is optimal for all participants regardless of their location within the space.

Another impressive characteristic of the ClearOne COMM AP800 is its user-friendly interface. The unit comes with a graphical interface that simplifies configuration and control. Users can easily manage audio settings, adjust levels, and monitor system performance in real time. This intuitive design streamlines setup and operation, making it accessible for users at all technical skill levels.

The AP800 also supports VoIP and SIP technologies, making it an ideal solution for businesses looking to integrate their audio systems with modern communication networks. This feature enhances interoperability with various communication platforms and devices, ensuring seamless connectivity for users.

For added flexibility, the ClearOne COMM AP800 can be integrated into larger audio systems. It can work harmoniously with other ClearOne products and third-party equipment, leveraging its modular design to create a comprehensive communication environment tailored to specific needs.

In summary, the ClearOne COMM AP800 represents a significant advancement in audio processing technology, offering state-of-the-art features for high-performance audio applications. Its powerful DSP capabilities, versatile microphone support, user-friendly interface, and seamless integration capabilities make it a must-have for any organization seeking to elevate their audio communication experience. With the AP800, ClearOne continues to push the boundaries of what's possible in professional audio technology.
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