uniapp中实现H5录音和上传、实时语音识别（兼容App小程序）和波形可视化

<template>
  <view class="container">
    <view class="record-container">
      <view class="record-btn" @touchstart="startRecord" @touchend="stopRecord">
        <!-- 录音按钮的样式 -->
      </view>
      <view class="wave-container">
        <!-- 这里放波形图形，通过canvas绘制 -->
      </view>
    </view>
  </view>
</template>
 
<script>
export default {
  data() {
    return {
      recorder: null,
      context: null,
      recording: false,
      audioCtx: uni.createAudioContext(),
      mediaRecorder: null,
      chunks: [],
      visualizer: null,
      audioSrc: null
    };
  },
  methods: {
    startRecord() {
      this.recording = true;
      const that = this;
      const stream = await navigator.mediaDevices.getUserMedia({ audio: true });
      this.context = new (window.AudioContext || window.webkitAudioContext)();
      const mediaStream = this.context.createMediaStreamSource(stream);
      this.recorder = new MediaRecorder(stream, { mimeType: 'audio/webm' });
      this.mediaRecorder = this.recorder;
      this.chunks = [];
      this.recorder.ondataavailable = function(e) {
        that.chunks.push(e.data);
      };
      this.recorder.start();
      setTimeout(() => {
        that.visualizer = new AudioVisualization(that.context, mediaStream, that.audioCtx);
      }, 1000);
    },
    stopRecord() {
      if (this.recording) {
        this.recording = false;
        this.recorder.stop();
        this.audioSrc = URL.createObjectURL(new Blob(this.chunks));
        this.uploadAudio(this.audioSrc);
      }
    },
    uploadAudio(audioSrc) {
      // 这里使用uni.uploadFile进行文件上传
      uni.uploadFile({
        url: 'https://your-upload-api.com', // 你的上传API地址
        filePath: audioSrc,
        name: 'file',
        success: (uploadFileRes) => {
          console.log('upload success:', uploadFileRes);
          // 上传成功后的处理逻辑
        },
        fail: (error) => {
          console.error('upload error:', error);
        }
      });
    }
  }
};
</script>
 
<style>
.record-container {
  /* 样式 */
}
.record-btn {
  /* 样式 */
}
.wave-container {
  /* 样式 */
}
</style>

这个代码实例提供了一个简化的H5录音、实时语音识别（通过Web Speech API）、上传以及波形可视化的功能。需要注意的是，实时语音识别和波形可视化可能需要额外的库或者服务支持，并且在App端的兼容性可能存在差异，需要进行相应的测试和调整。