ModernVoiceChat

Spatial Audio and Acoustics

• Replaced the hand-written stereo panner with per-speaker OpenAL Soft 3D streaming sources.
• Added optional headphone HRTF spatialization with automatic fallback to standard 3D audio.
• Added OpenAL output-device enumeration and isolated voice playback in a thread-local OpenAL context.
• Added smoothed multi-ray voice occlusion with OpenAL low-pass filtering.
• Added listener-space environment probes that drive shared early reflections and reverb through OpenAL EFX.

Microphone and Receive-Only Mode

• Added an explicit microphone enable/disable setting to the config screen and setup tutorial.
• Voice connections now remain available for receive-only playback when microphone capture is disabled or unavailable.

Radio PTT Audio

• Added a configurable real radio PTT press sound; release is intentionally silent.
• Release builds can bundle a locally supplied licensed sound asset while source builds retain a generated fallback.