RaShiSaAI Lab
Find your essence — in the mirror of your own voice.
RaShiSaAI Lab is EDENA’s R&D project. We don’t use AI voice technology to replace people. We use it to discover the essence living inside a person’s voice and speech, give that essence a name, nurture it, and carry it into future work and expression.
RaShiSaAI is our framework for AI voice experience that carries a person’s essence. Rather than reproducing the person themselves, we design a personalized AI experience that draws on the essence in their voice — always under the explicit consent and oversight of the person, their agency, and the rights holders.
EDENA as Content Sponsor
RaShiSaAI Lab is an R&D project that EDENA runs as content sponsor.
Working with AI voice technology, EDENA’s aim is to discover the essence in a person’s voice and speech, and — under conditions of trust and safety — to carry it into the work and expression of the future.
Built on voice AI infrastructure such as ElevenLabs, EDENA handles the experience design, dialogue design, voice tuning, prototyping, content production, deployment support, and the bridge to where each voice will be used.
With the consent and oversight of the person, their agency, and the rights holders as the precondition, we cultivate the safe and sustainable mechanism that lets essence reach society.
Sustainable content model
RaShiSaAI Lab is built on the assumption that this work doesn’t stop at one-off experiments or demos. It is meant to flow into real jobs and real social implementation.
As content sponsor, EDENA handles the early experience design, dialogue design, voice tuning, prototyping, and content production — and from there extends the resulting voice experiences and personalized AI into Voice Caster, Voice Casting Network, ENISHIC RECORD, and projects with companies, local governments, facilities, and communities.
A portion of the revenue generated there is reinvested into discovering new essences, developing further voice experiences, archiving local culture, producing multilingual content, and funding the next generation of expression projects.
Discover essence. Turn it into work. Cycle the revenue back into the next expression and experience. That is the sustainable content development model EDENA is building.
Essence Portfolio
At RaShiSaAI Lab, the multiple essences living inside a single voice are organized by scene, by mode, and by purpose. We call this the Essence Portfolio.
Morning weather voice — calm and steady
A voice that carries reassurance and trust into the start of the day.
Explainer voice — quiet intelligence
A voice that conveys information clearly, without rush, without noise.
Read-aloud voice — gentle company for children
A voice of warmth and ease, carrying stories close.
Brand voice — the trusted face
A voice that holds the trust of a company or service.
Essence isn’t classified from the outside. The person themselves looks at their own voice and speech, and names what they find — in their own words.
Voice clone as voice mirror
At RaShiSaAI Lab, voice cloning is not used as a substitute for the person. It is used as a voice mirror.
Listen to your own voice from the outside, as an AI voice. Notice the essence you didn’t know you carried. Give that essence a name, imagine how it could be used, and carry it into future work.
A voice clone is not for replacing a person. It is a mirror in which a person can look again at their own expression — and grow it.
RaShiSaAI Challenge
From my essence — to my work.
The RaShiSaAI Challenge is a participatory project in which broadcasters and other voice artists discover and name the essence inside their own voice and speech, prototype an AI voice as voice mirror, and connect that essence to the work of the future.
Building an AI voice isn’t the goal. The goal is to discover the essence inside yourself, and to deliver it to the world under conditions of trust and safety.
1. Hometown myth & folktale read-aloud voice
Seek out the myths, folktales, and legends still living in your hometown or a place you carry close — and deliver them in your own warm, read-aloud voice.
This opens into rediscovery of local culture, parent-child read-alouds, tourism, education, and inbound multilingual experiences.
2. Your essence voice
In this track, the participants themselves put words to the essence modes living in their own voice and speech, and prototype them as AI voices.
The essences that surface are cultivated into a personal Essence Portfolio, with the long-term aim of bringing them into the Voice Casting Network as an actual line of work.
Connection to VCN
An AI voice-dialogue network, woven from safety and trust
The essences discovered and designed at RaShiSaAI Lab travel out — through Voice Casting Network — into companies, communities, facilities, education, tourism, events, and beyond.
VCN is the network concept that ties together rights, trust, and the places voice will live — bringing AI voice dialogue into society at scale.
Voice experiences full of wonder and quiet excitement only stand up when safety and trust are the ground beneath them.
Research Themes
RaShiSaAI Lab researches the expression and technology that lets people and AI form trustworthy relationships — across AI voice, dialogue, nonverbal sync, and self-understanding.
- Essence Portfolio
- The voice mirror
- Essence Mode design
- Personalized AI
- Nonverbal sync
- A-Un Engine / NEE
- Margin Board
- Awareness OS
- Low-generation, low-power AI voice dialogue
- Designing voice and relationally
Rashisai-ki — the Vessel of Essence
We call the philosophy living inside RaShiSaAI Lab the Rashisai-ki — the Vessel of Essence.
The Rashisai-ki is the vessel in which essence is discovered, named, made to resonate, and grown.
By “vessel” we mean: the structure in which mutual resonance reaches its fullest.
The person’s own voice, their own words, the voice mirror, the essence modes, the Essence Portfolio, the dialogue, the path to making it work — when these resonate together, new possibilities rise into being inside the person.
The Three Sacred Vessels of RaShiSaAI
Sai-ki 彩器 / Vessel of Hue
The vessel that gives essence its color. It makes the differences in voice, word, pause, expression, and mode visible.
Sai-ki 栽器 / Vessel of Cultivation
The vessel that cultivates essence. It doesn’t stop at discovery — it names, tests, refines, and connects what’s found to actual work.
Sai-ki 才器 / Vessel of Talent
The vessel that receives the talent at the depth of essence — and lets it resonate. It finds, in voice and dialogue, the talent the person themselves hasn’t yet noticed.
RaShiSaAI Lab is the R&D lab where essence is given hue, cultivated, and made to resonate as talent. Not replacing people with AI — discovering the essence inside each person, growing it, and carrying it into the future. Through the voice mirror, RaShiSaAI Lab opens the expression and the work that only that person can do.