Biamp Parlé VBC 2500a
This article will highlight and explain some of the technologies implemented in the Parlé conferencing bar products and how the integrate into the environment.
Note: The new VBC/ABC 2500a models include support and connectivity for Assisted Listening Systems (ALS) (3.5mm mono jack) that mirrors the speaker output.
- The audio data source for the ALS output is the same as that for the loudspeakers but does not have the same DSP processing as that applied to the loudspeaker. (This channel level should be non-variable to the ALS system)
- Parlé microphone audio is not fed to the ALS output.
- ALS output is a balanced (differential) signal with a max output level of 0 dBu (0.755 Vrms)
Microphones and DSP processing in VBC 2500a
The VBC 2500 conferencing bar is designed around the same technology that is in the Parlé and Tesira products in one hardware device. Using 27 mics arranged in a vertical and horizontal array pattern, the ABC 2500 allows for pattern control on the Azimuth and Vertical fields of the room. In addition to the microphone array technology, the bar incorporates all the DSP elements that go into the Tesira products with an additional level of performance due to the nature of an all in one solution.
Mic array and DSP features of the Parlé VBC 2500a
- 27 Element Mic Array (Horizontal and Vertical)
- Tuned for Voice
- Three Tracking Arrays
- Advanced BeamTracking, Gain Control, Noise Cancelation and AEC processing
The large number of spaced capsules allow for mics to be setup as “clusters” forming very tight coverage over more frequencies on both the Azimuth and Vertical zones in the room. This allows for accurate tracking of seated or standing participants without the pickup of HVAC, adjacent room, or fan noise.
Parlé capsule clusters are positioned and tuned to be focused in the speech range. This allows for an optimized approach of speech pickup even before DSP is introduced. This helps to get the best speech sound to the microphone before any additional processing is added.
Biamp AI Noise Reduction
The Parlé ABC 2500 and VBC 2500 bars also feature Biamp’s newest noise reduction algorithm that provides reduction of stationary room noise as well as non-stationary room sources. Previous noise reduction focused on sources in the room that were steady and made adjustments to reduce or remove. In our newest noise reduction intelligence, non stationary room sources that are short in duration or have a high variability can be reduced in the same manner.
This noise reduction is based on a deep learning algorithm that uses matching learning to identify and isolate human speech from other sources such as typing, coughing, or sounds from outside the room.
AGC and Echo cancellation
Parlé conferencing bars feature the same onboard DSP technology as featured in the Tesira and Devio families to ensure optimum performance. This includes acoustic echo cancellation, AGC, speech sense, and non linear processing.
Speakers and Amplification
Both VBC 2500 and ABC 2500 conferencing bars have speaker components to provide the best in room audio performance. Stereo speakers have been provided to prepare for UC stereo conferencing needs.
60mm low distortion drivers are provided for uniform wide coverage.- The innovative enclosure design includes high volume, sealed enclosures that allow for complete isolation of the speaker assembly, passive radiator from the other bar components within the chassis.
- Dynamic Bass enhancement (DBE) is included to enhance low frequency content when at lower volumes, as well as ensure zero low-end distortion at high volumes.
- 20W x 2 onboard amplification with distortion compensation DSP to maximize enclosure efficiency.
Camera
The VBC 2500 is designed around a 12MP image sensor for a 4K, 120° field of view. It is great fit for huddle spaces, or small to medium conference room design applications. The VBC 2500 incorporates Biamp Video Intelligence technology into its onboard DSP to provide a strong features that optimize camera performance to the far side participants. Below is a list of the features included in the VBC 2500 onboard camera.
- LED indications for camera activity
- 4K, wide angle 120° field of view
- Electric Pan/Tilt/Zoom with 5x zoom
- Auto framing technology to keep participants in view
- Automatic privacy shutter
- Preset Recall
- Biamp Camera Control app for PC/MAC control and updates
- UVC camera control
Biamp LaunchTM
Parle’ VBC 2500 features Biamp LaunchTM, and a suite of functions designed to speed up and optimize the installation and tuning of a Biamp conference system.
Note: Downloadable Launch Report Card is not yet available for VBC and ABC conferencing bars.
Auto-configuration may be initiated from the Launch button on the bar
The Launch-capable mics and amplifiers on the bar offer a known reference system to begin tuning the room. System adaptations are made based on measurements of the room’s acoustic response and the loudspeaker behavior. Provides a room performance grade – before & after Launch.
Note: Front panel LED’s will flash until the Launch is initiated. A running Launch configuration may be cleared via factory reset procedure.
Connectivity
Rear panel features locking USB type C connection for integration
and locking power connector for the included 12 VDC power supply.
- USB-C locking connection with provided USB cables
- USB-C to USB C, 1M length, 20GBit/Sec Rated
- Locking 12VDC ~5A Power adapter is included and recommended for most applications.
- Note: Locking supply connection must be fully tightened and seated for proper power to be supplied to bar. If issue with enumeration is present, check for proper power supply seating.
- VBC 2500a models include an additional 3.5mm mono balanced output for connectivity to Assisted Listening Systems (ALS). This mirrors the speaker output of the bar. Microphone signal is not fed to this output.
The VBC 2500 has a rated max output of 50W.
