System Configuration ~ Inputs and Outputs

35

Non-linear Processing (NLP)

The Non-linear Processing (NLP) feature increases the power of echo cancellation for difficult acoustical environments. NLP features four settings: Soft (6dB), Medium (12dB), Aggressive (18dB), and Off. Use NLP with care; corresponding trade-offs can include suppression and half-duplex operation. Default is Soft.

Meters

The Echo Return Loss (ERL) meter on the Acoustic Echo Canceller window shows the coupling between the reference signal and the input to the echo canceller—the ratio of the two levels. It is an average meter that updates only when a signal is present.

The Echo Return Loss Enhancement (ERLE) meter shows the loss through the echo cancellation and non-linear processing chain—the ratio of the two levels. It is an average meter that updates only when a signal is present.

The Total Echo Reduction meter shows the total ERL and ERLE reduction, in decibels. It is an average meter that updates only when a signal is present.

NC

The NC button on the selected input in the Inputs 1–8 window opens the Noise Canceller window. The noise canceller reduces ambient noise in the signal with no noticeable degradation in signal quality.

To use noise cancellation, click Enable Noise Canceller, then adjust the Cancellation Depth to the setting which provides the best combination of low noise and maximum speech clarity. The attenuation depth can be set in 1dB increments from 6dB to 15dB. Default is 6dB.

The noise canceller default is Off. When noise cancellation is enabled, the light on the NC button illuminates green.

Filters

The Filter button on the selected input in the Inputs 1–8 window opens the Filter Graph setup window. Each mic/line input has four configurable filters that can be used as filters or equalizers. By default, they are not enabled and the filter types are not defined. Below is a description of each feature in the window.

Active Filter

Active Filter selects among filters on the graph. Note that no filters exist until you click Add Filter (see Figure 3.32) to add filters to the graph.

Figure 3.31. Noise Canceller window

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

Page 41
Image 41
ClearOne comm XAP 800 operation manual Filters, Non-linear Processing NLP, Meters, Active Filter

XAP 800 specifications

The ClearOne Comm XAP 800 is a sophisticated audio conferencing system designed to provide seamless communication in various environments, including conference rooms, boardrooms, and large meeting spaces. Known for its versatility and cutting-edge technology, the XAP 800 is a favorite solution for organizations seeking to enhance their audio conferencing capabilities.

One of the standout features of the XAP 800 is its ability to support up to 16 microphones. This is crucial for larger meetings, ensuring that every participant can be heard clearly, regardless of their location in the room. The device uses advanced audio technologies, including Automatic Gain Control (AGC), which automatically adjusts microphone sensitivity to maintain consistent audio levels. This ensures that the conversation remains intelligible even as participants lean in or shift their positions.

The XAP 800 also incorporates ClearOne’s proprietary Acoustic Echo Cancellation (AEC) technology. This feature eliminates echo disruptions that can occur in audio conferencing, allowing for clear and productive conversations. AEC works by differentiating between direct sound from microphones and echoed sound returning from speakers, ensuring that participants hear each other without feedback interference.

Another significant advantage of the XAP 800 is its integration capabilities. The system is designed to work seamlessly with a variety of third-party audio and video conferencing products, allowing businesses to expand their communication infrastructure without the need for extensive reconfiguration. The XAP 800 also supports USB connectivity, enabling easy integration with PCs and laptops for web conferencing solutions.

The device is equipped with multiple audio input and output ports, providing flexibility in configuration. Users can connect various hardware such as external speakers, additional microphones, and even video conferencing equipment. This adaptability makes the XAP 800 suitable for different setups, whether it’s a simple room with a few microphones or a complex installation with multiple audio and video sources.

User-friendly controls and an intuitive interface make operation straightforward, allowing even those less tech-savvy to manage audio settings with ease. The system is designed to be installed quickly, reducing downtime and ensuring that organizations can get back to effective communication without delay.

In summary, the ClearOne Comm XAP 800 is a powerful audio conferencing solution that combines advanced technologies with flexibility and ease of use. Its features such as support for multiple microphones, Acoustic Echo Cancellation, and seamless integration with other systems make it an ideal choice for businesses looking to enhance their communication efforts.