Overview

This is the Alexa Skill for Amazon Echo with as following features.

• Learning Korean - translation and quiz from English to Korean
• K-POP Music - lyrics and playing songs of KPOP chart information
• My Favorite Music - emotion based user based recommendation based on pre-defined set for emotion based
• Collaborative filtering, recent and popular playlist

Architecture

It used AWS Lambda, Google Translate API, Naver Text to Speech API, Melon API and ffmpeg technology.

Features

You can ask as following questions.

• Alexa, Translate XXX into Korean
• Alexa, I want to know popular K-POP songs
• Alexa, Play nth song in the chart
• Alexa, Let me know other song of nth artist
• Alexa, I feel sad
• Alexa, Recommend me any song
• Alexa, Give me n Korean quizzes
• Alexa, Tell me the lyrics of nth song

Performance

We improved some of performances

• Latency in API calls: Reduce calls, Dummy worker, Caching
• Lambda Initialization: User library tuning to Amazon Linux
• Lambda Execution: efficient code, MP3 caching and using Redis – In-memory Cache

N: Naver, G: Google