📐 Quality Metrics - Architecture Documentation

Version: 1.0.0 Last Updated: 2025-10-15 Status: Phase 1 - Métricas Fundamentales

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🎯 Executive Summary

Quality Metrics es el sistema nervioso sensorial de AudioLab: mide, cuantifica y valida la calidad en todas sus dimensiones.

Core Components

1. Metrics Framework (05_18_00): Universal infrastructure
2. Audio Quality (05_18_01): THD, SNR, LUFS (AES17, ITU-R)
3. Performance (05_18_02): Benchmarking científico
4. Regression Detection (05_18_04): Statistical monitoring
5. A/B Testing (05_18_05): Experimental validation
6. Quality Gates (05_18_08): CI/CD checkpoints

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📊 System Architecture

COLLECTORS → PROCESSORS → STORAGE → ANALYZERS → OUTPUTS
(Sources)    (Validate)   (TSDB)    (Stats)     (Dashboard/Alerts)

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🔧 Key Technologies

• Metric Types: Gauge, Counter, Histogram, Summary
• Collection: Periodic, Continuous, Event-driven, On-demand
• Standards: IEEE 1057, AES17-2015, ITU-R BS.1770-4, EBU R128
• Threading: Lock-free atomics + mutex for complex ops
• Storage: Time-series with downsampling

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📚 Reference Standards

• IEEE Std 1057-1994 (THD measurement)
• AES17-2015 (Digital audio measurement)
• ITU-R BS.1770-4 (Loudness)
• EBU R128 (Broadcast loudness)
• IEC 61606 (Audio analyzers)

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For complete details, see README.md and source code documentation.