uni-app使用百度语音识别转文字

谁借莪１个温暖的怀抱￠ 2023-07-24 02:21 71阅读 0赞

## 1. 准备 ##

*  注册登录百度AI开放平台（[http://ai.baidu.com/][http_ai.baidu.com]）
 *  找到语音技术 - 应用列表，创建应用，填写相应信息，语音包名选择不需要![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM2Nzk3Mjg2_size_16_color_FFFFFF_t_70]
 *  创建完成后，可以看到AppID、API Key、Secret Key

## 2. uni-app端开发 ##

<template>
    	<view>
    		<button @tap="startRecord">开始录音</button>
    		<button @tap="endRecord">停止录音</button>
    		<button @tap="playVoice">播放录音</button>
    	</view>
    </template>
    <script> const recorderManager = uni.getRecorderManager(); const innerAudioContext = uni.createInnerAudioContext(); innerAudioContext.autoplay = true; var _this; export default { data() { return { } }, onLoad() { _this = this; recorderManager.onStop(function(res) { console.log('recorder stop' + JSON.stringify(res)); // 使用uni.uploadFile上传到服务器上，此时是mp3格式 }); }, methods: { startRecord() { console.log('开始录音'); recorderManager.start({ sampleRate: 16000 // 必须设置是后台设置的参数，不然百度语音识别不了 }); }, endRecord() { console.log('录音结束'); _this = this; recorderManager.stop(); }, playVoice() { console.log('播放录音'); if (this.voicePath) { innerAudioContext.src = this.voicePath; innerAudioContext.play(); } } } } </script>
    
    <style> </style>

## 3. java端开发 ##

maven导入百度sdk，先将mp3转换为pcm，然后把pcm转换成二进制调用api

<dependency>
        <groupId>com.baidu.aip</groupId>
        <artifactId>java-sdk</artifactId>
        <version>4.12.0</version>
    </dependency>
    
    <dependency>
        <groupId>com.googlecode.soundlibs</groupId>
        <artifactId>mp3spi</artifactId>
        <version>1.9.5.4</version>
    </dependency>

public class SpeechRecognitionUtil { 
    
        //设置APPID/AK/SK
        public static final String APP_ID = "";
        public static final String API_KEY = "";
        public static final String SECRET_KEY = "";
    
        // 获取AipSpeech对象，建议单例使用
        public static AipSpeech getClient() { 
            AipSpeech client = new AipSpeech(APP_ID, API_KEY, SECRET_KEY);
            // 可选：设置网络连接参数
            client.setConnectionTimeoutInMillis(2000);
            client.setSocketTimeoutInMillis(60000);
            return client;
        }
    
        // 语音识别（来自文件）
        public static JSONObject basicByFile(String path, String fileType) { 
            AipSpeech client = getClient();
            return client.asr(path, fileType, 16000, null);
        }
    
        // 语音识别（来自二进制）
        public static JSONObject basicByByte(String filePath) throws IOException { 
            AipSpeech client = getClient();
            byte[] data = Util.readFileByBytes(filePath);
            return client.asr(data, "pcm", 16000, null);
        }
    
        public static void main(String[] args) throws IOException { 
            String mp3 = "D:/aa.mp3";
            String pcm = "D:/aa.pcm";
            MultiMediaUtil.MP3ConvertPcm(mp3,pcm);
            JSONObject jsonObject = basicByByte(pcm);
            System.out.println(jsonObject);
        }
    }

public class MultiMediaUtil { 
    
        // mp3转pcm
        public static boolean MP3ConvertPcm(String mp3filepath, String pcmfilepath){ 
            try { 
                //获取文件的音频流，pcm的格式
                AudioInputStream audioInputStream = getPcmAudioInputStream(mp3filepath);
                //将音频转化为 pcm的格式保存下来
                AudioSystem.write(audioInputStream, AudioFileFormat.Type.WAVE, new File(pcmfilepath));
                return true;
            } catch (IOException e) { 
                e.printStackTrace();
                return false;
            }
        }
    
        /** * 获得pcm文件的音频流 * @param mp3filepath * @return */
        private static AudioInputStream getPcmAudioInputStream(String mp3filepath) { 
            File mp3 = new File(mp3filepath);
            AudioInputStream audioInputStream = null;
            AudioFormat targetFormat = null;
            try { 
                AudioInputStream in = null;
                MpegAudioFileReader mp = new MpegAudioFileReader();
                in = mp.getAudioInputStream(mp3);
                AudioFormat baseFormat = in.getFormat();
                targetFormat = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED, baseFormat.getSampleRate(), 16,
                        baseFormat.getChannels(), baseFormat.getChannels()*2, baseFormat.getSampleRate(), false);
                audioInputStream = AudioSystem.getAudioInputStream(targetFormat, in);
            } catch (Exception e) { 
                e.printStackTrace();
            }
            return audioInputStream;
        }
    }

[http_ai.baidu.com]: http://ai.baidu.com/
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM2Nzk3Mjg2_size_16_color_FFFFFF_t_70]: /images/20230528/fabd7ec0161345de94017e4ed91d7511.png