184      人物

長文本合成Demo__語音合成(TTS)_智能語音交互-阿裏雲

TTS 長文本合成Demo

長文本合成Demo是為了滿足用戶有超過200字以上的文本，並需要合成一條語音結果的實現。本Demo基於Java SDK 實現，用戶需自定配置Java SDK的調用環境。

SDK 調用：

package com.alibaba.idst.nls.demo;
import com.alibaba.idst.nls.NlsClient;
import com.alibaba.idst.nls.NlsFuture;
import com.alibaba.idst.nls.event.NlsEvent;
import com.alibaba.idst.nls.event.NlsListener;
import com.alibaba.idst.nls.protocol.NlsRequest;
import com.alibaba.idst.nls.protocol.NlsRequestASR;
import com.alibaba.idst.nls.protocol.NlsRequestProto;
import com.alibaba.idst.nls.protocol.NlsResponse;
import com.alibaba.idst.nls.utils.PcmToWav;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.Arrays;
import java.util.UUID;
/**
 * Created by songsong.sss on 16/12/12.
 */
public class LongTtsDemo implements NlsListener {
    static Logger logger = LoggerFactory.getLogger(LongTtsDemo.class);
    private NlsClient client = new NlsClient();
    public String appKey = null;
    public String auth_Id = null;
    public String auth_Secret = null;
    public String tts_text ;
    private String fileName = UUID.randomUUID().toString();
    public LongTtsDemo() {
    }
    public void shutDown() {
        logger.info("close NLS client");
        client.close();
        logger.info("demo done");
    }
    public void start() {
        logger.info("init Nls client...");
        client.init();
        tts_text = "百草堂與三味書屋 魯迅 n" +
                "我家的後麵有一個很大的園，相傳叫作百草園。現在是早已並屋子一起賣給朱文公的子孫了，連那最末次的相見也已經隔了七八年，其中似乎確鑿隻有一些野草；但那時卻是我的樂園。n" +
                "不必說碧綠的菜畦，光滑的石井欄，高大的皂莢樹，紫紅的桑葚；也不必說鳴蟬在樹葉裏長吟，肥胖的黃蜂伏在菜花上，輕捷的叫天子(雲雀)忽然從草間直竄向雲霄裏去了。n"+
                "單是周圍的短短的泥牆根一帶，就有無限趣味。油蛉在這裏低唱，蟋蟀們在這裏彈琴。翻開斷磚來，有時會遇見蜈蚣；還有斑蝥，倘若用手指按住它的脊梁，便會啪的一聲，n"+
                "從後竅噴出一陣煙霧。何首烏藤和木蓮藤纏絡著，木蓮有蓮房一般的果實，何首烏有臃腫的根。有人說，何首烏根是有像人形的，吃了便可以成仙，我於是常常拔它起來，牽連不斷地拔起來，n" +
                "也曾因此弄壞了泥牆，卻從來沒有見過有一塊根像人樣。如果不怕刺，還可以摘到覆盆子，像小珊瑚珠攢成的小球，又酸又甜，色味都比桑葚要好得遠。";
    }
    public void sayIt() throws Exception {
        int ttsTextLength = tts_text.length();
        String[] longTexts;
        int i = 0;
        boolean isHead = false; //標識是否是第一個頭文件
        String tts_part_text;
        File file = new File(fileName+".pcm");
        if (!file.exists()) {
            try {
                file.createNewFile();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        FileOutputStream outputStream = new FileOutputStream(file, true);
        longTexts = processLongText(tts_text);
        //處理文本,文本長度以50為限,截取為多個文件.
        while (ttsTextLength > 0) {
            tts_part_text = "";
            if (ttsTextLength > 50) {
                if (i == 0) {
                    isHead = true;
                } else {
                    isHead = false;
                }
                for (; i < longTexts.length; i++) {
                    tts_part_text = tts_part_text + longTexts[i];
                    if (i < longTexts.length - 1 && tts_part_text.length() + longTexts[i + 1].length() >= 50) {
                        i = i + 1;
                        break;
                    }
                }
            } else {
                if (i == 0) {
                    isHead = true;
                }
                for (; i < longTexts.length; i++) {
                    tts_part_text = tts_part_text + longTexts[i];
                }
            }
            NlsRequest req = new NlsRequest();
            req.setApp_key("nls-service");
            req.setTts_req(tts_part_text, "16000");
            req.setTtsEncodeType("wav");
            req.setTtsVoice("xiaoyun");//男聲:xiaogang
            req.setTtsVolume(50);
            req.setTtsBackgroundMusic(1, 0);
            req.authorize(auth_Id, auth_Secret);
            NlsFuture future = client.createNlsFuture(req, this);
            int total_len = 0;
            byte[] data;
            while ((data = future.read()) != null) {
                if (data.length == 8044 ) {
                    // 去掉wav頭,同時將多條wav轉成一條pcm
                    logger.debug("data length:{} , and head is:{}", (data.length - 44), isHead ? "true" : "false");
                    outputStream.write(data, 44, data.length - 44);
                } else {
                    outputStream.write(data, 0, data.length);
                }
                total_len += data.length;
            }
            logger.info("tts audio file size is :" + total_len);
            future.await(10000);
            ttsTextLength = ttsTextLength - tts_part_text.length();
        }
        outputStream.close();
        //將pcm轉為wav,可以直接播放. 格式為:16kHz采樣率,16bit,單聲道
        PcmToWav.copyWaveFile(fileName+".pcm",fileName+".wav");
        logger.debug("close the wav file!");
    }
    @Override
    public void onMessageReceived(NlsEvent e) {
        NlsResponse response = e.getResponse();
        String result = "";
        if (response.getDs_ret() != null) {
            result = "get ds result: " + response.getDs_ret();
        }
        if (response.getAsr_ret() != null) {
            result += "nget asr result: " + response.getAsr_ret();
        }
        if (response.getTts_ret() != null) {
            result += "nget tts result: " + response.getTts_ret();
        }
        if (response.getGds_ret() != null) {
            result += "nget gds result: " + response.getGds_ret();
        }
        if (!result.isEmpty()) {
            logger.info(result);
        } else if (response.jsonResults != null) {
            logger.info(response.jsonResults.toString());
        } else {
            logger.info("get an acknowledge package from server.");
        }
    }
    @Override
    public void onOperationFailed(NlsEvent e) {
        logger.error("Error message is: {}, Error code is: {}", e.getErrorMessage(), Integer.valueOf(e.getResponse().getStatus_code()));
    }
    //切分長文本
    public static String[] processLongText(String text) {
        text = text.replaceAll("、", "、|");
        text = text.replaceAll("，", "，|");
        text = text.replaceAll("。", "。|");
        text = text.replaceAll("；", "；|");
        text = text.replaceAll("？", "？|");
        text = text.replaceAll("！", "！|");
        text = text.replaceAll(",", ",|");
        text = text.replaceAll(";", ";|");
        text = text.replaceAll("\?", "?|");
        text = text.replaceAll("!", "!|");
        String[] texts = text.split("\|");
        return texts;
    }
    @Override
    public void onChannelClosed(NlsEvent e) {
        logger.info("on websocket closed.");
    }
    /**
     * @param args
     */
    public static void main(String[] args) throws Exception {
        LongTtsDemo lun = new LongTtsDemo();
        if (args.length < 4) {
            logger.info("NlsDemo <app-key> <Id> <Secret>");
            System.exit(-1);
        }
        lun.appKey = args[0];
        lun.auth_Id = args[1];
        lun.auth_Secret = args[2];
        lun.start();
        lun.sayIt();
        lun.shutDown();
    }
}

package com.alibaba.idst.nls.utils;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
/**
 * Created by songsong.sss on 2016/12/12.
 */
public class PcmToWav {
    private static int frequency = 16000;
    private static final int RECORDER_BPP = 16;
    private static int recBufSize = 640;
    public static void copyWaveFile(String inFilename,String outFilename){
        FileInputStream in = null;
        FileOutputStream out = null;
        long totalAudioLen = 0;
        long totalDataLen = totalAudioLen + 36;
        long longSampleRate = frequency;
        int channels = 1;
        long byteRate = RECORDER_BPP * frequency * channels/8;
        byte[] data = new byte[recBufSize];
        try {
            in = new FileInputStream(inFilename);
            out = new FileOutputStream(outFilename);
            totalAudioLen = in.getChannel().size();
            totalDataLen = totalAudioLen + 36;
            //AppLog.logString("File size: " + totalDataLen);
            WriteWaveFileHeader(out, totalAudioLen, totalDataLen,
                    longSampleRate, channels, byteRate);
            while(in.read(data) != -1){
                out.write(data);
            }
            in.close();
            out.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    private  static void WriteWaveFileHeader(
            FileOutputStream out, long totalAudioLen,
            long totalDataLen, long longSampleRate, int channels,
            long byteRate) throws IOException {
        byte[] header = new byte[44];
        header[0] = 'R';  // RIFF/WAVE header
        header[1] = 'I';
        header[2] = 'F';
        header[3] = 'F';
        header[4] = (byte) (totalDataLen & 0xff);
        header[5] = (byte) ((totalDataLen >> 8) & 0xff);
        header[6] = (byte) ((totalDataLen >> 16) & 0xff);
        header[7] = (byte) ((totalDataLen >> 24) & 0xff);
        header[8] = 'W';
        header[9] = 'A';
        header[10] = 'V';
        header[11] = 'E';
        header[12] = 'f';  // 'fmt ' chunk
        header[13] = 'm';
        header[14] = 't';
        header[15] = ' ';
        header[16] = 16;  // 4 bytes: size of 'fmt ' chunk
        header[17] = 0;
        header[18] = 0;
        header[19] = 0;
        header[20] = 1;  // format = 1
        header[21] = 0;
        header[22] = (byte) channels;
        header[23] = 0;
        header[24] = (byte) (longSampleRate & 0xff);
        header[25] = (byte) ((longSampleRate >> 8) & 0xff);
        header[26] = (byte) ((longSampleRate >> 16) & 0xff);
        header[27] = (byte) ((longSampleRate >> 24) & 0xff);
        header[28] = (byte) (byteRate & 0xff);
        header[29] = (byte) ((byteRate >> 8) & 0xff);
        header[30] = (byte) ((byteRate >> 16) & 0xff);
        header[31] = (byte) ((byteRate >> 24) & 0xff);
        header[32] = (byte) (1 * 16 / 8);  // block align
        header[33] = 0;
        header[34] = RECORDER_BPP;  // bits per sample
        header[35] = 0;
        header[36] = 'd';
        header[37] = 'a';
        header[38] = 't';
        header[39] = 'a';
        header[40] = (byte) (totalAudioLen & 0xff);
        header[41] = (byte) ((totalAudioLen >> 8) & 0xff);
        header[42] = (byte) ((totalAudioLen >> 16) & 0xff);
        header[43] = (byte) ((totalAudioLen >> 24) & 0xff);
        out.write(header, 0, 44);
    }
}