Added solution files
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Audio Tone Generator.sln
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25
Audio Tone Generator.sln
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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio Version 17
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VisualStudioVersion = 17.0.31717.71
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Audio Tone Generator", "Audio Tone Generator\Audio Tone Generator.csproj", "{AA736F2B-391A-45E4-A290-D9869BFBA63F}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{AA736F2B-391A-45E4-A290-D9869BFBA63F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{AA736F2B-391A-45E4-A290-D9869BFBA63F}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{AA736F2B-391A-45E4-A290-D9869BFBA63F}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{AA736F2B-391A-45E4-A290-D9869BFBA63F}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobalSection
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GlobalSection(ExtensibilityGlobals) = postSolution
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SolutionGuid = {50848817-EF8E-4E27-93AB-F590C14556E4}
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EndGlobalSection
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EndGlobal
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6
Audio Tone Generator/App.config
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6
Audio Tone Generator/App.config
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<?xml version="1.0" encoding="utf-8" ?>
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<configuration>
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<startup>
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<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />
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</startup>
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</configuration>
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52
Audio Tone Generator/Audio Tone Generator.csproj
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Audio Tone Generator/Audio Tone Generator.csproj
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<?xml version="1.0" encoding="utf-8"?>
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<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
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<PropertyGroup>
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<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
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<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
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<ProjectGuid>{AA736F2B-391A-45E4-A290-D9869BFBA63F}</ProjectGuid>
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<OutputType>Exe</OutputType>
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<RootNamespace>AudioToneGenerator</RootNamespace>
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<AssemblyName>AudioToneGenerator</AssemblyName>
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<TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
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<FileAlignment>512</FileAlignment>
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<AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
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<PlatformTarget>AnyCPU</PlatformTarget>
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<DebugSymbols>true</DebugSymbols>
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<DebugType>full</DebugType>
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<Optimize>false</Optimize>
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<OutputPath>bin\Debug\</OutputPath>
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<DefineConstants>DEBUG;TRACE</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
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<PlatformTarget>AnyCPU</PlatformTarget>
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<DebugType>pdbonly</DebugType>
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<Optimize>true</Optimize>
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<OutputPath>bin\Release\</OutputPath>
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<DefineConstants>TRACE</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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</PropertyGroup>
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<ItemGroup>
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<Reference Include="System" />
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<Reference Include="System.Core" />
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<Reference Include="System.Xml.Linq" />
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<Reference Include="System.Data.DataSetExtensions" />
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<Reference Include="Microsoft.CSharp" />
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<Reference Include="System.Data" />
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<Reference Include="System.Net.Http" />
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<Reference Include="System.Xml" />
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</ItemGroup>
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<ItemGroup>
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<Compile Include="Program.cs" />
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<Compile Include="Properties\AssemblyInfo.cs" />
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</ItemGroup>
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<ItemGroup>
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<None Include="App.config" />
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</ItemGroup>
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<Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
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</Project>
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183
Audio Tone Generator/Program.cs
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183
Audio Tone Generator/Program.cs
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace AudioToneGenerator
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{
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class Program
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{
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static void Main(string[] args)
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{
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FileStream fs = new FileStream("F:\\testFile.wav", FileMode.Create);
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Stream s = GenerateWaveFormStream(50, 4800000);
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s.CopyTo(fs);
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fs.Flush();
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fs.Close();
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Console.WriteLine("Complete");
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Console.ReadLine();
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}
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/// <summary>
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/// Internal class that adds in simple write buffer support
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/// </summary>
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internal class MemoryStream_Mod : MemoryStream
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{
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public void Write(byte[] buffer)
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{
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Write(buffer, 0, buffer.Length);
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}
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}
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static internal byte[] GetBytes(int i)
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{
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byte[] bytes = BitConverter.GetBytes(i);
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if (!BitConverter.IsLittleEndian)
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{
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// We need data in little-endian format; so reverse the array
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Array.Reverse(bytes);
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}
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return bytes;
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}
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static internal byte[] GetBytes(uint i)
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{
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byte[] bytes = BitConverter.GetBytes(i);
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if (!BitConverter.IsLittleEndian)
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{
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// We need data in little-endian format; so reverse the array
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Array.Reverse(bytes);
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}
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return bytes;
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}
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static internal byte[] GetBytes(short i)
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{
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byte[] bytes = BitConverter.GetBytes(i);
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if (!BitConverter.IsLittleEndian)
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{
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Array.Reverse(bytes);
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}
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return bytes;
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}
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static internal byte[] GetBytes(Int24 i)
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{
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byte[] bytes = BitConverter.GetBytes(i); // final irrelevant byte is 0; create a new array and ignore
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byte[] tripleBytes;
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if (BitConverter.IsLittleEndian)
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{
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// Little-endian, so use the first three bytes
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tripleBytes = new byte[] { bytes[0], bytes[1], bytes[2] };
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}
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else
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{
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// Big-endian, so use the last three, beginning from the end
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tripleBytes = new byte[] { bytes[3], bytes[2], bytes[1] };
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}
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return tripleBytes;
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}
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/// <summary>
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/// Non-standard 24-bit integer. Uses the system's endianness (underlying implementation is Int32)
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/// </summary>
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internal readonly struct Int24
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{
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private readonly int m_value;
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public const int MaxValue = 0x7FFFFF;
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public const int MinValue = -0x800000;
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public bool Equals(Int24 obj)
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{
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return m_value == obj.m_value;
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}
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public Int24(int i)
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{
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if (i > MaxValue || i < MinValue)
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{
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throw new ArgumentOutOfRangeException(nameof(i), i.ToString());
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}
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m_value = i;
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}
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public static explicit operator Int24(int i) => new Int24(i);
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public static implicit operator int(Int24 i) => i.m_value;
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public override string ToString() => m_value.ToString();
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}
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/// <summary>
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/// Non-standard unsigned 24-bit integer. Uses the system's endianness (underlying implementation is Int32)
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/// </summary>
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internal readonly struct UInt24
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{
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private readonly int m_value;
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public const int MaxValue = 0xFFFFFF;
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public const int MinValue = 0x0;
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public bool Equals(UInt24 obj)
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{
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return m_value == obj.m_value;
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}
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public UInt24(int i)
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{
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if (i > MaxValue || i < MinValue)
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{
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throw new ArgumentOutOfRangeException(nameof(i), i.ToString());
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}
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m_value = i;
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}
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public static explicit operator UInt24(int i) => new UInt24(i);
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public static implicit operator int(UInt24 i) => i.m_value;
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public override string ToString() => m_value.ToString();
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}
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public static Stream GenerateWaveFormStream(int frequency, uint numberOfSamples, int sampleRate=48000, short numChannels=1, short bitsPerSample=24)
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{
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// Create a variant of the memory stream which allows shorthand writing
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MemoryStream_Mod ms = new MemoryStream_Mod();
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// Create the file header
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ms.Write(Encoding.ASCII.GetBytes("RIFF"));
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ms.Write(GetBytes(0)); // File size in bytes
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ms.Write(Encoding.ASCII.GetBytes("WAVEfmt ")); // File type and format chunk
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ms.Write(GetBytes((int)ms.Length)); // Length of currently written bytes
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ms.Write(GetBytes((short)1)); // short; little-endian = 1 [= PCM data]
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ms.Write(GetBytes(numChannels)); // Number of channels
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ms.Write(GetBytes(sampleRate)); // Sample Frequency
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ms.Write(GetBytes((sampleRate * numChannels * bitsPerSample) / 8)); // Effective byte rate (num channels * sample rate * bitrate) / 8
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ms.Write(GetBytes((short)((bitsPerSample * numChannels)/8))); // Block align
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ms.Write(GetBytes(bitsPerSample));
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// Data block
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ms.Write(Encoding.ASCII.GetBytes("data"));
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ms.Write(GetBytes((uint)(numberOfSamples * numChannels * bitsPerSample) / 8));
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// Actual sound data
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// Frequency == C->H->C->L->C oscillations per second; so angular velocity is 2 x Pi x frequency
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// Sample rate = number of times/second we sample that value
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// Therefore, if the sample was 1-i per second, 20 Hz would be (20 * 360)i
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UInt24[] channelData = new UInt24[numChannels];
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double angularVelocity = 2 * Math.PI * frequency;
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double timeBetweenSamples = 1 / (double)sampleRate;
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double samplesAngular = angularVelocity / sampleRate;
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double normalisedFrequency = frequency / timeBetweenSamples;
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for (uint i = 0; i < numberOfSamples; i++)
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{
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for (int n = 0; n < numChannels; n++)
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{
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double curr = Math.Sin(samplesAngular * i);
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ms.Write(GetBytes((Int24)(((Int24.MaxValue-1) / 2) * curr)));
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}
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}
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ms.Position = 4;
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ms.Write(GetBytes((int)ms.Length));
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ms.Position = 0; // Return the stream position to the beginning
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return ms;
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}
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}
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}
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36
Audio Tone Generator/Properties/AssemblyInfo.cs
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36
Audio Tone Generator/Properties/AssemblyInfo.cs
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using System.Reflection;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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// General Information about an assembly is controlled through the following
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// set of attributes. Change these attribute values to modify the information
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// associated with an assembly.
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[assembly: AssemblyTitle("Audio Tone Generator")]
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[assembly: AssemblyDescription("")]
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[assembly: AssemblyConfiguration("")]
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[assembly: AssemblyCompany("")]
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[assembly: AssemblyProduct("Audio Tone Generator")]
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[assembly: AssemblyCopyright("Copyright © Brychan Dempsey 2018")]
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[assembly: AssemblyTrademark("")]
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[assembly: AssemblyCulture("")]
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// Setting ComVisible to false makes the types in this assembly not visible
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// to COM components. If you need to access a type in this assembly from
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// COM, set the ComVisible attribute to true on that type.
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[assembly: ComVisible(false)]
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// The following GUID is for the ID of the typelib if this project is exposed to COM
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[assembly: Guid("aa736f2b-391a-45e4-a290-d9869bfba63f")]
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// Version information for an assembly consists of the following four values:
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//
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// Major Version
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// Minor Version
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// Build Number
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// Revision
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//
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// You can specify all the values or you can default the Build and Revision Numbers
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// by using the '*' as shown below:
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// [assembly: AssemblyVersion("1.0.*")]
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[assembly: AssemblyVersion("1.0.0.0")]
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[assembly: AssemblyFileVersion("1.0.0.0")]
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