How the Resonance Index is built.
A transparent rating system for audio storytelling productions. Six data sources. Five weighted subscores. Quarterly refresh. Producers cannot pay to improve their grade — methodology and source data are published in full.
Guiding Principles.
The Resonance Index exists to answer a single question for producers, financiers, platforms, and serious audio-storytelling listeners: which audio storytelling productions actually resonate — and which just fill the air?
- Full-listen reviews. Every rated production is fully listened to by the C3POE review team. No partial-listen / aggregator-only ratings.
- Producers cannot pay. No rated production, studio, or platform has paid, can pay, or has been offered the opportunity to pay for inclusion, exclusion, or modification of their grade.
- Quarterly refresh. Grades update every 90 days; new productions trigger interim updates.
- Subscore transparency. Every grade decomposes into five public subscores.
- Right of correction. Producers may submit documented corrections via published Appeals process.
The Six Data Sources.
Award Bodies (Audie, Peabody, Pulitzer)
Industry awards — Audie Awards (audiobooks), Peabody Awards (audio journalism + drama), Pulitzer Prize (audio reporting). Critical for cultural-resonance subscore.
Trade Press (AudioFile, Podnews)
Industry trade press — AudioFile Magazine (audiobook reviews), Podnews (podcast industry coverage), Hot Pod (subscription newsletter). Industry-perspective benchmarking.
Platform Charts (Spotify, Apple, Edison)
Platform-published charts (Spotify Top Podcasts, Apple Podcasts Top 100) plus Edison Research industry data. Source for cultural-resonance subscore.
Critic + Listener Reviews (Aggregated)
Aggregated critic reviews from NYT, Vulture, Variety, AV Club plus Apple Podcasts + Spotify listener-review aggregations.
Audio Publishers Association (APA)
Industry benchmarking via Audio Publishers Association annual reports, sales data, and demographic studies.
C3POE Listening-Review Framework
C3POE's published listening-review framework. Methodology and review-protocol specifications published.
The Five Subscores.
Sonic Craft
Sound design quality, audio mixing, immersive depth, music + foley integration. Distinguishes premium production from spoken-into-a-mic.
Narrative Strength
Story coherence, structure, character development, emotional arc, thematic ambition. The literary-quality dimension.
Voice Performance
Narrator / cast voice quality, character differentiation, emotional range, technical performance. The actor-craft dimension.
Production Value
Overall craft and polish: pacing, edit quality, sound-mix consistency, distribution professionalism. The technical-execution dimension.
Cultural Resonance
Staying power, critical reception, audience impact, awards recognition, cultural influence. The lasting-impact dimension.
Weighting & Scoring.
Why these weights? Narrative Strength is heaviest because audio storytelling stripped of narrative is just nice sound. Sonic Craft and Voice Performance tie closely because they're the dimensions that distinguish premium audio production from amateur podcasting. Production Value and Cultural Resonance complete the composite — both critical but secondary to the core narrative + sonic + voice triad.