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Spatial Audio Speaker Localization App for VR Conferencing
  1. case
  2. Spatial Audio Speaker Localization App for VR Conferencing

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Spatial Audio Speaker Localization App for VR Conferencing

instinctools.com
Telecommunications
Information technology

Challenge

Current VR video conferencing solutions suffer from a lack of spatial audio awareness, resulting in a suboptimal user experience. Participants are often positioned randomly, making it difficult to discern who is speaking. This hinders natural conversation flow and collaboration, requiring complex and expensive camera setups to achieve basic speaker identification. The absence of spatial audio significantly reduces the realism and immersion of the virtual environment.

About the Client

A Swedish video streaming provider specializing in immersive virtual reality (VR) conferencing solutions for businesses.

Objectives

  • Develop a software application to accurately detect and localize the position of the loudest audio source in real-time within a VR conferencing environment.
  • Integrate the application with existing VR video conferencing platforms to enhance the user experience.
  • Improve the naturalness and realism of VR conversations by providing directional audio cues.
  • Reduce the complexity and cost of VR conferencing setups by eliminating the need for complex multi-camera configurations.
  • Enable users to analyze Ambisonics audio streams from various sources (sound card, audio file, HLS stream).

Functional Requirements

  • Real-time speaker localization using Ambisonics audio processing.
  • Direction vector calculation and metadata embedding into H.264 video streams.
  • Integration with Wowza WMS for metadata delivery.
  • Live mode vector detection and calculation.
  • Debugging information and visualization of the 360-degree sound field.
  • Support for multiple audio sources (sound card, audio files, HLS streams).

Preferred Technologies

Digital Signal Processing
HRTF (Head-Related Transfer Function)
FFT (Fast Fourier Transform)
Convolution
AGC (Automatic Gain Control)
PortAudio
ZeroMQ
FFMPEG
OpenCV
Wowza WMS

Integrations Required

  • Wowza WMS for metadata delivery to video streams

Non-Functional Requirements

  • Low latency processing for real-time speaker localization.
  • Scalability to support a large number of concurrent users.
  • High accuracy in speaker localization.
  • Robustness and reliability to ensure uninterrupted operation.
  • Secure data transmission and storage.

Estimated Impact

This project will significantly enhance the quality and usability of Nova Streaming AB's VR conferencing platform. By providing accurate spatial audio cues, the application will improve communication, collaboration, and overall user satisfaction. It will also allow Nova Streaming to differentiate itself in the market and potentially reduce development costs associated with complex camera systems. Improved realism will enhance adoption and provide a competitive advantage.

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