Ray Tsai
English 聯絡我

AI 產品 · HCI 研究 · 網站製作

我做能幫助人開口、學習與連結的AI 產品

我是蔡秉叡 Ray，臺大資工人工智慧碩士班（HCI Lab）。從語音辨識研究走進人機互動，獨立開發並上架 AI 口說練習 App，也幫社群與課程做網站。

看我做的 App 聯絡我
完整履歷英文・2 頁・PDF
蔡秉叡 Ray 在 Google 大廳的彩色牆與 Google 字樣前比讚
NTU CSIE · HCI Lab
Mirror已上架 App Store

網站接案

幫你的店或工作室做一個網站

學生作品價，適合小店、工作室與個人的簡單展示網站。每月限量接案。

先看網站作品 聊聊你的網站

我做的網站

社群官網

2K Pickleball Club

Three.js 即時算繪 3D 球拍與球，跟著捲動演出

開啟網站 （在新分頁開啟）

課程回顧子站

臺大矽谷探索學程回顧

手機頁長縮短 29%（14,848 → 10,601 px）

開啟網站 （在新分頁開啟）
示範資料

實驗室活動平台

HCI Lab FUN LAB

報名、許願、投票與相簿；繁中／English／Català 三語介面

實驗室內部平台・需邀請碼・畫面為示範資料

品牌社群網站

Taiwan Founder House

母站加上敘事型課程回顧子站，收錄 15 位學員的影片

開啟網站 （在新分頁開啟）

從語音研究走進人機互動，做出上架的產品

研究教我怎麼量測，產品教我怎麼取捨。下面是我目前的學歷與經歷。

看完整履歷英文・2 頁・PDF

研究經歷

2025/6 – 2026/3

中央研究院 資訊科學研究所 CKIP Lab

兼任研究助理

創創學程

19屆

第 19 屆學員（2026）

15人

矽谷探索學程首屆 15 人

臺大創意創業學程

第 19 屆學員（2026）；也是臺大矽谷探索學程首屆 15 位學員之一。

2026 夏天

約7週

臺大矽谷探索學程學員

「國際創新創業探索與實踐：矽谷探索實務」：約 7 週在矽谷做市場研究與專家訪談，9/12 參加成果發表會。

看矽谷七週回顧 （在新分頁開啟）
夜晚的大合照
夜晚的大合照
辦公室大合照
辦公室大合照
優勝美地的日落
優勝美地的日落
在矽谷辦公室分享
在矽谷辦公室分享
在 Google 的團體自拍
在 Google 的團體自拍

影片 · YouTube · 10:36

我把矽谷七週剪成一支影片

Seven Weeks in Silicon Valley | Growing Into My Own Voice

YouTube 影片封面：7 Weeks in Silicon Valley 播放影片 · 10:36：Seven Weeks in Silicon Valley | Growing Into My Own Voice（YouTube）

按下播放後才會載入 YouTube。

在 YouTube 觀看 （在新分頁開啟）

把研究 與好奇心

做成 每天用得到的工具

上架的 App，與正在做的產品

Mirror 首頁：像素角色與五維聲紋條
Mirror 聲音指紋分析結果

已上架 App Store

Mirror – AI Speech Coach

AI 語音教練：錄下你的口語回答，Mirror 會轉錄、評分並重寫成更清楚、更有結構的版本，再用你自己克隆出來的聲音播放出來，讓「更好的自己」聽起來不遙遠。

  • 聲音簽章：30 秒建立個人語音模型
  • 模擬面試：英／中／日三語
  • 原始回答與優化版本並排回放
  • 聲紋雷達：五個維度的說話風格分析

獨立開發｜iPhone｜免費下載

在 App Store 查看（在新分頁開啟）

其他專案

點開每個專案，看它的畫面、狀態與連結。

Echo iOS · Chrome
Echo 產品介紹頁

會記住你「倒退 15 秒」的 Podcast 播放器：把你重聽的那一句留下來，判斷沒聽懂的原因（單字、連音、語速…），隔天變成你的口說練習。Chrome 版把 YouTube 字幕互動變成同樣的練習素材。

  • iOS：TestFlight 受邀測試中
  • Chrome 擴充功能：開發中
產品介紹 （在新分頁開啟）GitHub （在新分頁開啟）
Rayality Projection Mapping Web · 開源
Rayality 編輯器的四角校正畫面與投影輸出

在瀏覽器裡做投影映射：匯入圖片或影片、拖動四個角校正透視，再從另一個視窗輸出到投影機。核心功能不需要任何金鑰；也可以自備 Google Veo 金鑰生成動態素材。

  • 線上可用・開源
開啟編輯器 （在新分頁開啟）GitHub （在新分頁開啟）
MedBuddy Web · LINE bot
MedBuddy 照顧者網頁儀表板（示範資料）

給多重用藥長者與家人的用藥理解與照護交接原型：用規則式判讀整理藥物資訊，長者和照顧者透過兩支 LINE 共用一份照護紀錄；藥袋照片的辨識結果要經人工確認才會寫入。在一場 Build Challenge 中約 48 小時完成。

  • 原型・示範資料
開啟原型 （在新分頁開啟）GitHub （在新分頁開啟）
Echo 產品介紹頁Rayality 編輯器的四角校正畫面與投影輸出MedBuddy 照顧者網頁儀表板（示範資料）

數據

累計瀏覽次數
暫無資料
GitHub 公開專案
9
App 與產品
4 個
網站作品
4 個
已上架 App Store 的 App
1 款（Mirror）
矽谷探索學程
7 週
Mirror 模擬面試語言
3 種（英／中／日）
Mirror 聲音簽章
30 秒建立

填表聯絡

留個話，我來聯絡你

不用註冊、不用下載。寫下怎麼稱呼你、怎麼聯絡你，還有想做什麼就好。

例如：王老闆、陳小姐

怎麼聯絡你（至少填一項）
想做什麼（可以多選）

例如：我開麵店，想要一個有菜單和地址的網頁

留言只存在網站後台、僅 Ray 本人可查看，用於回覆你。 隱私權政策

完整履歷（英文）

下載 PDF 新分頁開啟（在新分頁開啟）

蔡秉叡 Ray Tsai

linkedin.com/in/ray-tsai-8908bb212（在新分頁開啟）github.com/rick-ray-wldd（在新分頁開啟）

Research & Product Focus

Multimodal human-computer interaction, sports coaching technology and voice AI. Combines basketball tactical knowledge, study design and product development to explore how personalized audio can support learning and real-world practice.

Education

National Taiwan University (NTU)Feb 2026 – Present

M.S. student, Computer Science and Information Engineering, Artificial Intelligence Program

  • HCI Lab, advised by Prof. Mike Y. Chen（在新分頁開啟）; multimodal interaction, emotional voice and AR/VR interfaces.
  • Spring 2026 GPA: 4.04/4.3 (15 credits). A+ in Multimodal HCI, Natural Language Processing, Artificial Intelligence, and Web Programming; additional coursework in Big Data Systems.

National Yang Ming Chiao Tung University (NYCU)Sep 2021 – Dec 2025

B.S. in Electrophysics

  • GPA: 4.1/4.3 over the final four semesters. Graduate-level coursework: Machine Learning for Signal Processing (A+), Speech Signal Processing (A+), Deep Learning (A), and AI and Law (A+).

Research Manuscript Under Review

CoachCast - Player-Specific Audio for Basketball Practice2026

Coauthor | Submitted to ACM CHI 2027; under review

  • Contributed basketball tactical guidance and recommendations, experimental design, and data annotation to a study of concurrent, player-specific audio guidance during coach-led team practice.
  • The project examines how personalized audio supports coordinated player actions alongside team-wide coaching, including trade-offs around guidance timing and player autonomy.

International Entrepreneurship Experience

NTU Silicon Valley Exploration ProgramJul – Aug 2026

Selected participant, inaugural 15-student cohort | San Francisco Bay Area, USA

  • Completed seven weeks of startup exploration, industry visits and founder exchanges; presented product progress and reflections through weekly NTU Day sessions at Startup Island TAIWAN.
  • Brought hands-on product feedback to IrisGo's cofounder and CTO: reproduced a Windows integration detection issue and narrowed likely causes to environment, executable detection and launch behavior.
  • Discussed creator voice-generation workflows with Influenxio's founder; translated ecosystem feedback into Echo's language-learning direction and a subsequent expressive-voice editing prototype.
  • Presented at Pre-Demo Day and developed MedBuddy for AI Fund's Engineer in Residence Build Challenge; continued product development and professional relationships after returning to Taiwan.

Selected Products

Mirror - AI Speech Coach（在新分頁開啟）Apr 2026 – Present

Solo Founder | App Store release; 2026 NTU AI Builders Challenge entry

  • Built an end-to-end coaching app that analyzes spoken answers and replays revised responses in the user's cloned voice, supporting Traditional Chinese, English and Japanese.
  • Implemented voice calibration, streaming TTS, mock interviews and onboarding with Expo/React Native, Next.js and Supabase.
  • Reached 718 organic signups; shipped voice calibration, practice and feedback as a complete mobile learning workflow.

Echo - Contextual Language LearningJul 2026 – Present

Cofounder & Product Developer

  • Built a podcast-learning prototype linking playback and transcripts with vocabulary capture and replay; uses rewind behavior as a signal for comprehension support and follow-up shadowing practice.
  • Lead product development with a cofounder (NTU Information Management), who handles native Swift, Dynamic Island, system playback controls and practice cards.
  • Exploring browser-extension workflows for learning from video and other media beyond podcasts; developing Echo through NTU entrepreneurship coursework.

MedBuddy - Medication-Care Prototype（在新分頁開啟）Jul 2026

AI Fund Engineer in Residence Build Challenge submission

  • Delivered a web dashboard and LINE-based care prototype during a 48-hour build challenge, connecting older adults and family caregivers; collaborated on LINE transport and reminder scheduling.
  • Separated deterministic medication-rule verdicts from AI explanations and documented rule provenance. Project validation recorded 316 passing tests; prototype has not undergone clinical validation.

Emotional Voice - Creator Voice EditingSep 2026 – Present

Independent Developer | Single-user local prototype

  • Built a take-comparison workspace with manual and AI-assisted editing, change previews, undo, candidate listening and WAV export; 11 integration tests and desktop/mobile checks passed.
  • Compared English, Chinese and mixed-language voice-clone recordings through controlled generation and exploratory listening. Investigating creator advertising workflows informed by discussions with Influenxio.

Research Experience

Research Assistant (Part-time), Academia SinicaJun 2025 – Mar 2026

CKIP Lab, Institute of Information Science | Dr. Wei-Yun Ma

  • Worked on multimodal language models and emotion-aware speech generation; contributed progressive SpecAugment scheduling and dialect-aware conditioning to the 2025 Formosa Speech Workshop Challenge team's low-resource Hakka ASR work.
  • Surveyed Kimi-Audio for joint emotion recognition and controllable speech generation.

Research Assistant, National Tsing Hua UniversityMar 2023 – Jul 2025

Institute of Learning Sciences & Technologies

  • Co-developed a multimodal AI picture-book platform combining speech synthesis and image generation for language learning and cognitive therapy; taught 12 hours per semester of generative AI and n8n/LangChain workshops.

Shadow Your Perfect SelfMay – Jun 2026

NTU Multimodal HCI course research project

  • Built and evaluated a three-condition self-voice shadowing platform with 12 participants; observed preference for self-voice models, while objective measures did not establish pronunciation gains.

Athletics, Leadership & Service

  • NTU Varsity Basketball Team, Forward (Fall 2026 - Present): joined this semester; registered for the 2027 北市大盃 tournament.
  • C-Level Basketball Coaching License (Taiwan): certified basketball coach.
  • NTU Creativity and Entrepreneurship Program, 19th cohort (2026); selected for High-Tech Entrepreneurship and Operations, a 12-student course (Fall 2026).
  • Public Relations Officer, NYCU Electrophysics Student Association (2022-2023): hosted 9 career seminars with 700+ total attendees and speakers from semiconductor and photonics companies.
  • Awards: Runner-Up, Law Broker GPT PLUS+ AI Competition (Jan 2024); Honorable Mention, 美術竹梅 Hackathon (2023).
  • ITRI Research Intern (Oct 2022 - Jun 2023): Python tools for automated data collection. DuPont Taiwan IT Intern: corporate IT workshops and network maintenance.

Ping-Juei (Ray) Tsai | September 2026

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