Multi-fidelity Conferencing Bridge Segmentation
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Solution Overview
Problem
Current conferencing technologies are limited by the lowest common denominator of audio fidelity, preventing enhanced or wideband endpoint devices from utilizing their higher fidelity capabilities when participating in conferences with narrowband devices, resulting in suboptimal audio quality for all participants.
Innovation Solution
A multi-fidelity teleconferencing platform that allows participants to connect via either narrowband or wideband endpoints, with the system seamlessly managing connections through a bridge comprising wideband and narrowband components, ensuring high-fidelity audio for wideband participants while accommodating narrowband participants without reverting to low-fidelity for all.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional narrowband conference bridge is used to ensure compatibility with all endpoint devices, then all participants can connect reliably, but wideband endpoint devices cannot utilize their higher fidelity capabilities
Solution Approach 1:
The conference bridge is segmented into multiple independent processing channels: a narrowband processing path for traditional telephone network participants and a wideband processing path for IP-based participants. Each path operates independently with its own audio processing resources, allowing simultaneous support for different audio fidelities without mutual interference.
Solution Approach 2:
A dual-mode audio processing intermediary is introduced that can operate in both narrowband and wideband modes. This intermediary receives audio signals, identifies the fidelity capability of each participant, and routes them to the appropriate processing path, enabling the bridge to adapt to different endpoint capabilities while maintaining optimal audio quality for each.
2Manufacturing precision
If the conference bridge operates in wideband mode to provide high-fidelity audio, then audio quality is improved, but narrowband endpoint devices cannot connect
Solution Approach 1:
The conference bridge is designed with multi-functional audio processing capabilities that can simultaneously handle narrowband, wideband, and mixed-fidelity conferences. The system automatically detects the capabilities of connecting endpoints and configures the appropriate processing mode, making the bridge universally compatible with different endpoint types while maintaining optimal performance for each.
Solution Approach 2:
The audio processing mode of the bridge is made dynamic rather than static. The system continuously monitors the capabilities of connected participants and dynamically adjusts the processing path for each participant accordingly. This allows the bridge to transition between narrowband-only, wideband-only, and mixed-mode operation based on the real-time composition of the conference participants.
3Manufacturing precision
If separate processing paths are created for wideband and narrowband participants, then each participant receives optimal audio quality, but system complexity increases
Solution Approach 1:
While maintaining separate processing paths for narrowband and wideband audio, the system merges the control and routing functions into a unified architecture. A single call control mechanism manages both processing paths, and a unified user interface handles all participants regardless of their audio fidelity capability. This merging of control functions reduces operational complexity despite the presence of multiple processing paths.
Data Source
AI summary
Embodiments according to the present invention allow multiple parties equipped with telecommunications devices (endpoint devices) of similar or differing audio capabilities to join in a conference call and enjoy the fidelity associated with their equipment. Rather than operating with the frequency and fidelity limits of traditional telecommunications circuits (for example, about 300-3500 Hz), at least a portion of a conference bridge according to the present invention operates at higher frequencies. Conference participants using high-fidelity endpoint devices hear each other with greater clarity and reproduction accuracy. Conference participants using conventional interfaces send and receive lower-fidelity audio, but it affects only their own participation and not that of the entire conference. Participants can connect via for example, wireline, wireless Public Switched Telephone Network (PSTN), or via networks such as the Internet. Multiple voice encoding schemes are accommodated.