Handling metadata in WAV files

Reading audio details

The GroupDocs.Metadata API supports extracting technical audio information from WAV files.

The following are the steps to read audio details.

1. Load a WAV audio
2. Get the root metadata package
3. Extract  the native metadata package using the WavRootPackage.WavPackage property
4. Read the WAV audio properties

AdvancedUsage.ManagingMetadataForSpecificFormats.Audio.Wav.WavReadNativeMetadataProperties

using (Metadata metadata = new Metadata(Constants.InputWav))
{
	var root = metadata.GetRootPackage<WavRootPackage>();
	if (root.WavPackage != null)
	{
		Console.WriteLine(root.WavPackage.AudioFormat);
		Console.WriteLine(root.WavPackage.BitsPerSample);
		Console.WriteLine(root.WavPackage.BlockAlign);
		Console.WriteLine(root.WavPackage.ByteRate);
		Console.WriteLine(root.WavPackage.NumberOfChannels);
		Console.WriteLine(root.WavPackage.SampleRate);
	}
}

Extract RIFF INFO chunk metadata

The WAV format is derived from the RIFF container which acts as a wrapper for various audio and video coding formats. As a derivative of RIFF, WAV files can be tagged with metadata in the INFO chunk. The chunk may include information such as the title of the work, the author, the creation date, and copyright information. Here is an example of how the RIFF INFO metadata can be extracted:

AdvancedUsage.ManagingMetadataForSpecificFormats.Audio.Wav.WavReadInfoMetadata

using (Metadata metadata = new Metadata(Constants.InputWav))
{
    var root = metadata.GetRootPackage<WavRootPackage>();
    if (root.RiffInfoPackage != null)
    {
        Console.WriteLine(root.RiffInfoPackage.Artist);
        Console.WriteLine(root.RiffInfoPackage.Comment);
        Console.WriteLine(root.RiffInfoPackage.Copyright);
        Console.WriteLine(root.RiffInfoPackage.CreationDate);
        Console.WriteLine(root.RiffInfoPackage.Software);
        Console.WriteLine(root.RiffInfoPackage.Engineer);
        Console.WriteLine(root.RiffInfoPackage.Genre);
 
        // ...
    }
}

Working with XMP metadata

GroupDocs.Metadata for .NET also allows managing XMP metadata in WAV files. For more details please refer to the following guide: Handling metadata in WAV files

More resources

GitHub examples

You may easily run the code above and see the feature in action in our GitHub examples:

• GroupDocs.Metadata for .NET examples
• GroupDocs.Metadata for Java examples

Free online document metadata management App

Along with full featured .NET library we provide simple, but powerful free Apps. You are welcome to view and edit metadata of PDF, DOC, DOCX, PPT, PPTX, XLS, XLSX, emails, images and more with our free online Free Online Document Metadata Viewing and Editing App.