Hi, there! Thanks for showing your interest in practicemusic.onl
I was learning to play guitar for about a year until I realised the need to learn notes locations on the fretboard to improve my skills.
The search for an app that would let me focus on playing notes on the guitar was futile. Other apps give you a "virtual" fretboard on the screen. I doubted that the proposed approach was efficient as it did not develop muscle memory in my hands. So as a software engineer, I decided to prototype an app for this.
Since it is still an early prototype, expect a lot of breaking changes here. For example, you might need to reset your score multiple times, while I am searching for the most engaging progression model or best metrics.
Speed describes how much time has passed since the exercise asked you to play a note until the moment you did it. We measure speed in milliseconds. There are 1000 milliseconds in 1 second. The lower the value - the faster you are.
Accuracy describes how often you pick the requested note without a mistake. Let's say an exercise 10 times asked you to play some notes. If you play all the notes correctly - your accuracy will be 1. If you fail all the attempts - your accuracy will be 0.
We derive the Score from Accuracy and Speed to use a single value describing your progress to proficiency. The score value can be from 0 to 100. A higher value means better performance.
The app calculates the score as an average value across all individual notes' scores within a skill. In cases when there are many notes in a skill, for instance - exercise "6th string" contains 13 possible notes. There's a chance that the exercise will not have enough time to choose all the notes. In this case, the missed notes will have a score of 0. Since we calculate average across all the notes, it may reduce overall score.