func playNotes(ins audio.Instrument) error {
s := bufio.NewScanner(os.Stdin)
for s.Scan() {
for _, f := range strings.Fields(s.Text()) {
n, err := note.FromString(f)
if err != nil {
fmt.Println("invalid note: ", f)
}
ins.SetFreq(n.Freq())
time.Sleep(250 * time.Millisecond)
}
}
return s.Err()
}
func (v *voice) play(name string) {
go func() {
for {
for _, txt := range v.notes {
n, err := note.FromString(txt)
if err == nil {
v.ins.SetFreq(n.Freq())
} else {
v.ins.SetFreq(0)
}
time.Sleep(500 * time.Millisecond)
}
}
}()
err := v.ins.Play()
if err != nil {
panic(err)
}
fmt.Println(name, "done")
}