math2001 / piano

Piano

Something which will eventually be able to play some music of its own.

Convention

In tests, always print the actual result and then the expected one. I just couldn't chose, so I went with alphabetical order.

Piece

When using a Piece, .Render it and paste it as a comment above the Note field. It makes it much easier to understand what's going on. For example:

p := &Piece{
    // 440: ***        <- the .Render
    // 523:  *
    Notes: []Note{
        Note{
            Frequency: 440,
            Duration:  frac.N(3),
            Start:     frac.N(0),
        },
        Note{
            Frequency: 523.25,
            Duration:  frac.N(1),
            Start:     frac.N(1),
        },
    },
}

Make sure they stay updated

(is there an easy thing to build which would automatically update those?)

TODO

Use beep.Buffer when generating waves

When I generate a wave, I just use a regular [][2]float64 which takes up a lot of room, as said in the wiki. I should probably use a beep.Buffer using a .wav format

Use a polynomial approximation instead of math.Sin

(Measure the performance gain before doing that) Then, I could vary the precision and optimise it for the period of the wave