Question

我是音频编程和套接字编程的新手。我正在尝试使用NAudio AsioOut类和套接字通过网络发送吉他信号。

这是接收者和发送者的源代码。

看起来接收器确实从发送器获取字节数组，但我听到的只是白噪声。

接收者源代码

    using System;
using System.Net;
using System.Net.Sockets;
using System.Runtime.InteropServices;
using System.Threading;
using NAudio.Utils;
using NAudio.Wave;
using NAudio.Wave.SampleProviders;

namespace Reciever
{
    internal class Program
    {
        private static Socket Listener;
        private static Socket Accepter;
        private static AsioOut Output;
        private static BufferedWaveProvider OutputBuffer;
        [STAThread]
        private static void Main(string[] args)
        {
            IPHostEntry ipHostEntry = Dns.GetHostEntry("192.168.1.4");
            IPAddress ipAddr = ipHostEntry.AddressList[2];
            IPEndPoint ipEndPoint = new IPEndPoint(ipAddr, 7777);
            Listener = new Socket(ipAddr.AddressFamily, SocketType.Stream, ProtocolType.Tcp);

            Console.WriteLine("Слушатель готов по адресу:{0} ", ipEndPoint);
            Listener.Bind(ipEndPoint);
            Listener.Listen(10);
            Accepter = Listener.Accept();
            Console.WriteLine("Клиент с адресом {0} подключен", Accepter.RemoteEndPoint);

            Output = new AsioOut();
            Output.ShowControlPanel();
            Console.Read();
            OutputBuffer = new BufferedWaveProvider(WaveFormat.CreateIeeeFloatWaveFormat(44100, 2));

            Output.Init(OutputBuffer);

            Thread playing = new Thread(new ThreadStart(Output.Play));
            Thread listening = new Thread(new ThreadStart(Listening));

            playing.Start();
            listening.Start();
        }

        public static void Listening()
        {
            while (true)
            {
                byte[] buffer = new byte[65538];
                int ReceivedData = Accepter.Receive(buffer);
                OutputBuffer.AddSamples(buffer, 0, ReceivedData);
            }
        }
    }
}

发件人源代码

    using System;
using System.Net;
using System.Net.Sockets;
using System.Runtime.InteropServices;
using NAudio.Wave;


namespace Sender
{
    class Program
    {
        private static Socket sck;

        [STAThread]
        static void Main(string[] args)
        {
            AsioOut asioout = new AsioOut();

            IPHostEntry ipHostEntry = Dns.GetHostEntry("192.168.1.2");
            IPAddress ipAddr = ipHostEntry.AddressList[1];
            IPEndPoint ipEndPoint = new IPEndPoint(ipAddr, 7777);
            sck = new Socket(ipEndPoint.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
            BufferedWaveProvider buffer = new BufferedWaveProvider(WaveFormat.CreateIeeeFloatWaveFormat(44100,2));
            sck.Bind(ipEndPoint);
            try
            {
                sck.Connect("192.168.1.4", 7777);
            }
            catch (Exception ex)
            {
                Console.WriteLine("Соединие не установлено");
                Console.Read();
                return;
            }
            Console.WriteLine("Соединение установлено");
            asioout.InitRecordAndPlayback(buffer, 2, 44100);
            asioout.AudioAvailable += new EventHandler<AsioAudioAvailableEventArgs>(asioout_AudioAvailable);
            asioout.Play();
            Console.Read();
        }

        private static void asioout_AudioAvailable(object sender, AsioAudioAvailableEventArgs e)
        {
            var samples = e.GetAsInterleavedSamples();
            byte[] OutputBuffer = new byte[e.SamplesPerBuffer*4];
            byte[] SendingBuffer = new byte[e.SamplesPerBuffer*4];
            Console.WriteLine(e.SamplesPerBuffer*4);
            for (int i = 0; i < e.InputBuffers.Length; i++)
            {
                Marshal.Copy(e.InputBuffers[i], OutputBuffer, 0, e.SamplesPerBuffer*4);
                Buffer.BlockCopy(samples, 0, SendingBuffer, 0, e.SamplesPerBuffer*4);
                Marshal.Copy(OutputBuffer, 0, e.OutputBuffers[i], e.SamplesPerBuffer * 4);

            }

            sck.Send(SendingBuffer);
            e.WrittenToOutputBuffers = true;
        }
    }
}

UPD.1 （07.10.2015）：发件人代码和接收器代码已更新。现在我可以听到来自接收器的吉他信号，但听起来非常扭曲。我做错了什么？

P.S。我正在台式电脑上使用M-Audio Fast Track USB声卡。通过网络将ASIO4ALL驱动程序从那台信号转移到我的笔记本电脑上。

Answer 1

您的接收器假定传入的音频是16位，但使用ASIO，它可以很容易地为24或32位。实际上，您的发送代码似乎假定为32位。首先尝试在接收端使用IEEE float WaveFormat

NAudio AsioOut +套接字

1 个答案: