func main() {
if len(os.Args) < 4 {
fmt.Fprintln(os.Stderr, "Usage: say-phones <output> <voice>",
"<phones ...>")
os.Exit(1)
}
phones := make([]gospeech.Phone, 0, len(os.Args)-3)
for _, str := range os.Args[3:] {
p, err := gospeech.ParsePhone(str)
if err != nil {
fmt.Fprintln(os.Stderr, "Invalid phone: "+str)
os.Exit(1)
}
phones = append(phones, p)
}
voice, err := gospeech.LoadVoice(os.Args[2])
if err != nil {
fmt.Fprintln(os.Stderr, "Failed to load voice:", err)
os.Exit(1)
}
sound := gospeech.SynthesizePhones(phones, voice)
if err := wav.WriteFile(sound, os.Args[1]); err != nil {
fmt.Fprintln(os.Stderr, "Failed to write output:", err)
os.Exit(1)
}
}
func ErrMain() error {
if len(os.Args) != 4 {
return errors.New("Usage: wav-volume <file.wav> <volume> <output.wav>")
}
s, err := wav.ReadSoundFile(os.Args[1])
if err != nil {
return err
}
scale, err := strconv.ParseFloat(os.Args[2], 64)
if err != nil {
return err
}
wav.Volume(s, scale)
return wav.WriteFile(s, os.Args[3])
}
func ErrMain() error {
if len(os.Args) != 3 {
return errors.New("Usage: wav-tone <frequency> <file.wav>")
}
freq, err := strconv.Atoi(os.Args[1])
if err != nil {
return err
}
sampleRate := 44100
sound := wav.NewPCM8Sound(1, sampleRate)
for i := 0; i < sampleRate*1; i++ {
time := float64(i) / float64(sampleRate)
value := wav.Sample(math.Sin(time * math.Pi * 2 * float64(freq)))
sound.SetSamples(append(sound.Samples(), value))
}
return wav.WriteFile(sound, os.Args[2])
}
func ErrMain() error {
if len(os.Args) < 3 {
return errors.New("Usage: wav-join <input.wav> [<another.wav> ...] " +
"<output.wav>")
}
s, err := wav.ReadSoundFile(os.Args[1])
if err != nil {
return err
}
for _, f := range os.Args[2 : len(os.Args)-1] {
nextS, err := wav.ReadSoundFile(f)
if err != nil {
return err
}
wav.Append(s, nextS)
}
return wav.WriteFile(s, os.Args[len(os.Args)-1])
}
func ErrMain() error {
if len(os.Args) != 5 {
return errors.New("Usage: wav-gradient <file.wav> <start> <end> " +
"<output.wav>")
}
s, err := wav.ReadSoundFile(os.Args[1])
if err != nil {
return err
}
start, err := strconv.ParseFloat(os.Args[2], 64)
if err != nil {
return err
}
end, err := strconv.ParseFloat(os.Args[3], 64)
if err != nil {
return err
}
wav.Gradient(s, time.Duration(start*float64(time.Second)),
time.Duration(end*float64(time.Second)))
return wav.WriteFile(s, os.Args[4])
}
func ErrMain() error {
if len(os.Args) != 5 {
return errors.New("Usage: wav-overlay <input.wav> <overlay.wav> " +
"<start> <output.wav>")
}
start, err := strconv.ParseFloat(os.Args[3], 64)
if err != nil {
return err
}
s1, err := wav.ReadSoundFile(os.Args[1])
if err != nil {
return err
}
s2, err := wav.ReadSoundFile(os.Args[2])
if err != nil {
return err
}
wav.Volume(s1, 0.5)
wav.Volume(s2, 0.5)
wav.Overlay(s1, s2, time.Duration(start*float64(time.Second)))
return wav.WriteFile(s1, os.Args[4])
}