beatrunner

To start game for dev:

npm install #this gets your dependencies
npm run dev #this starts up the project in a hot-reloading dev server
#connect to localhost:8080

DSP Stuff

Read mp3

• Read into array(?)
• Array size: sample rate * song length in secs

Frequency analysis

• FFT over whole(?) mp3 to find frequency content
• input: array of samples over time, each spaced by f_s
• result: array of samples corresponding to multiples of f_c [f_s, 2f_s, 3f_s, ... ] (i think)
• ALT: Break into amplitude level sections
• Analyze each section separately. This will probably give us better "levels" overall

BeatDetection

• LPF array
• Bin samples (bin size? TBD)
• For each bin, only keep the maximum sample as 1, replace all others with 0
• Find distance between peaks in each bin over entire array
• Assume most common distance is a factor of the BPM (or the BPM itself)