Amazon Pollyを使って音声再生する

say.go

package main

import (
	"fmt"
	"io/ioutil"
	"os"

	"github.com/hajimehoshi/oto"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/polly"
)

func main() {

	if len(os.Args) <= 1 {
		fmt.Println("Usage: say <message to say>")
		return
	}

	p, err := oto.NewPlayer(16000, 1, 2, 1000)
	if err != nil {
		return
	}
	defer p.Close()

	svc := polly.New(session.New())
	input := &polly.SynthesizeSpeechInput{
		// LexiconNames: []*string{
		// 	aws.String(""),
		// },
		OutputFormat: aws.String("pcm"),
		SampleRate:   aws.String("16000"),
		Text:         aws.String(os.Args[1]),
		TextType:     aws.String("text"),
		VoiceId:      aws.String("Mizuki"),
	}

	result, err := svc.SynthesizeSpeech(input)
	if err != nil {
		fmt.Println(err.Error())
		return
	}

	stream, err := ioutil.ReadAll(result.AudioStream)
	if err != nil {
		fmt.Println(err.Error())
		return
	}
	p.Write(stream)
}