C# 电脑录音 实例源码(根据声音分贝大小自动录制)

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using Oraycn.MCapture;using Oraycn.MFile;using System.Configuration;namespace IntelligentRecord{ public partial class Form1 : Form { private IMicrophoneCapturer microphoneCapturer; private MyaudioFileMaker audioFileMaker = new MyaudioFileMaker(); //录制器 private accumulater lowDBFrameCounter = new accumulater();//低分贝计数器 private accumulater frameCounter = new accumulater();//帧数计数器 /*【大致思路】 * 程序启动时开启采集，用分贝显示器来获取每一帧的分贝。 在采集事件处理函数中轮询分贝值。 如果分贝值高于一定值，开启录制 如果分贝值低于一定值，低分贝计数器加一，帧数计数器加一 如果低分贝计数器在一定帧数内，低分贝计数器等于帧数计数器，即该段时间内持续低分贝，关闭录制 */ public Form1() { InitializeComponent(); this.microphoneCapturer = CapturerFactory.CreateMicrophoneCapturer(0);//采集器，启动程序时即开启 this.microphoneCapturer.AudioCaptured = new ESBasic.CbGeneric<byte[]>(microphoneCapturer_AudioCaptured);//预定采集事件 this.microphoneCapturer.Start();//开始采集 //初始化录制器所需的参数 this.audioFileMaker.Initialize("test.mp3", this.microphoneCapturer.SampleRate, this.microphoneCapturer.ChannelCount); } void microphoneCapturer_AudioCaptured(byte[] data) { this.audioFileMaker.StartMakeFile(data);//录制器安插此处，通过IsWorking参数来控制其工作状态 this.frameCounter.Start(); //帧数计数器安插此处，用于记录在低分贝时期内的总帧数。通过IsWorking参数来控制其工作状态 this.decibelDisplayer1.DisplayAudioData(data);//分贝显示器显示音量 this.label_db.Text = this.decibelDisplayer1.Volume.ToString();//显示当前音量 this.label_RecordSign.Text = this.audioFileMaker.IsWorking ? "正在录音" : "未录音"; this.label_RecordSign.ForeColor = this.audioFileMaker.IsWorking ? Color.Blue : Color.Red; //当音量高于开启值时，打开录制器 if (this.decibelDisplayer1.Volume > int.Parse(ConfigurationManager.AppSettings["DB2Open"])) { this.audioFileMaker.IsWorking = true; } //当记录的低分贝帧数达到一定值时，关闭两个计数器，然后总结这段时间内的帧状况 if (this.lowDBFrameCounter.Count > int.Parse(ConfigurationManager.AppSettings["checkCount"])) { //若低分贝帧数与总帧数一直，即该段时间内持续低分贝，则关闭录制 if (this.lowDBFrameCounter.Count == this.frameCounter.Count) { this.audioFileMaker.IsWorking = false; } this.frameCounter.IsWorking = false; this.lowDBFrameCounter.IsWorking = false; return; } //当音量低于阈值时，开启低分贝计数器与帧数计数器的计数 if (this.decibelDisplayer1.Volume < int.Parse(ConfigurationManager.AppSettings["DB2Close"])) { this.frameCounter.IsWorking = true; this.lowDBFrameCounter.IsWorking = true; this.lowDBFrameCounter.Start(); } } //关闭主窗时，释放采集器与录制器 private void Form1_FormClosing(object sender, FormClosingEventArgs e) { this.microphoneCapturer.Dispose(); this.audioFileMaker.Dispose(); } //打开文件夹 private void button_OpenDirectory_Click(object sender, EventArgs e) { this.audioFileMaker.OpenFileDirectory(); } }}