Karaoke in the browser - play online right now

Getting started

Requirements

1. Node (14+)
2. Yarn
3. A microphone (best with SingStar ones)

Install dependencies

yarn

Run

yarn start

Run in offline mode

Plays dummy local video instead of YouTube to work properly in offline environments (eg. planes).

yarn start:mock

Localhost service worker

Locally the app runs on HTTPS (with dummy cert) so remote microphones work. This makes the Service Worker not work due to untrusted origin. See this document how this can be fixed.

Build for production

yarn build

Development

Simulating microphone

Instead of having to sing every time you'd like to test something, you can mock the input.

Edit src/Scenes/Game/Singing/Input/InputManager.ts and assign DummyInput into the Input variable

const Input = DummyInput;
const Input1 = MicInput;

Terminology:

• frequency - a frequency of player's voice in Hz
• frequencyRecord - object containing frequency and timestamp (of the song) when it was recorded
• pitch - an actual sound (eg A, C, F#) as a number where 0 = C0
• section - either a verse (containing notes) or a "pause section" - A.K.A instrumental part of the song when nothing's sung
• note - a single singable syllabe with assigned target pitch, starting beat, length and lyric. Is also one of several types (see below)
• distance - a number of pitches between player's note pitch and target note pitch, disregarding the octave (so for example player's note C0 has distance 0 to note's target pitch of C4). Note a tolerance can apply - eg with tolerance of 1, distance between pitches 66 and 65 will be 0 (while between 67 and 65 would be 2)
• playerNote - group of frequencyRecords recorded directly after eachother, matched (by time) to a note with the same distance to it. Basically represents the player sung lines shown in the game

Note types

• normal - regular note
• star - golden note, gives bonus points
• rap / freestyle - notes that are always hit if any singing is detected. Gives reduced points

Run unit tests

yarn test