OS-Level Audio Interception Architecture
Capturing multi-speaker audio across diverse operating systems without injecting intrusive third-party meeting bots requires direct integration with native sound subsystems. Gramola deploys modular Rust daemon processes that interface directly with OS audio drivers. On macOS, CoreAudio tap frameworks capture per-application streams with zero system overhead. On Windows 11, WASAPI loopback capture intercepts discrete communications channels, while modern Linux distributions leverage PipeWire nodes. This architectural decoupling guarantees lossless 48kHz audio ingest regardless of whether conversations occur in Zoom, Microsoft Teams, Google Meet, or proprietary internal VoIP tools.
Native Driver Abstractions and Rust Core
The native capture agent executes as an unprivileged background daemon, minimizing attack surfaces while delivering sub-15ms buffer latencies. Audio packets pass through a lock-free ring buffer directly into a local WebRTC VAD (Voice Activity Detection) filter. Silent intervals are discarded at source, cutting upstream network bandwidth by over 60%.
- Zero-bot injection avoids meeting host permissions and prevents attendee recording fatigue.
- Native CoreAudio, WASAPI loopback, and PipeWire drivers maintain crystal-clear 48kHz PCM capture.
- Real-time VAD filtering eliminates silent frames before end-to-end encrypted TLS 1.3 streaming.
Stream Multiplexing and Cloud Ingestion
Processed audio chunks are stamped with monotonic microsecond timestamps and microphone/system output channel identifiers. This stereo separation allows conversational AI models to distinguish between local participant speech and remote attendees with near-perfect diarization accuracy. Chunks stream via bi-directional gRPC channels to Gramola's summarization engine, providing continuous transcription and instant executive briefings.
Integration Architecture Matrix
Secure OAuth 2.0 & Token Handshake
Zero-trust credential exchange ensures all audio streaming tokens and meeting recording privileges are rotated periodically with automatic revocation triggers.
POST /v2/oauth/bridge/token
Host: api.gramola.info
Authorization: Bearer tok_live_rust_audio_9942a17bReal-Time Transcription Event Pipeline
Bi-directional gRPC streaming routes participant audio chunks, voice identification vectors, and action items directly into CRM data models.
event: transcript.stream.delta
data: {"speaker_id": 1, "action_item": true}SOC-2 Type II & GDPR Data Handling
Every synced record is encrypted in transit using TLS 1.3 and at rest with AES-256 keys, preserving strict compliance isolation.
Encryption: AES-256-GCM
Audit Log ID: AUDIT-CAP-2026-X981
Community Insights & Notes
0 InsightsNo insights yet. Be the first to leave a technical comment or deployment feedback.
Leave a Technical Insight or Note
Share your deployment experience, webhook parameters, or configuration feedback with the ecosystem.