drum.go

     1  package drum // import "vimagination.zapto.org/music/instruments/percussion/drum"
     2  
     3  import "vimagination.zapto.org/music"
     4  
     5  type Drum struct {
     6  	player *music.Player
     7  }
     8  
     9  func New(p *music.Player) Drum {
    10  	return Drum{player: p}
    11  }
    12  
    13  func (d Drum) Bass(time uint64, channel int) {
    14  	rate := d.player.Rate()
    15  	bassIntro := d.player.EndZeroNote(rate/50, music.E2)
    16  	d.player.Add(time, d.player.EndZeroNote(rate/50, music.E3), music.E3.Sine, music.RampUp, channel)
    17  	d.player.Add(time, d.player.EndZeroNote(rate/75, music.E4), music.E4.Sine, music.AdjustProfile(0.75, music.RampUp), channel)
    18  	d.player.Add(time, d.player.EndZeroNote(rate/100, music.E5), music.E5.Sine, music.AdjustProfile(0.5, music.RampUp), channel)
    19  	d.player.Add(time+bassIntro, rate*2, music.E2.Sine, music.ExponentialDown, channel)
    20  }