This prolific sample source code in VB.NET for ByteScout PDF Suite contains various functions and other necessary options you should do calling the API to extract audio from pdf with pdf extractor sdk. Follow the instructions from scratch to work and copy the VB.NET code. Enjoy writing a code with ready-to-use sample VB.NET codes.
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Imports Bytescout.PDFExtractor Class Program Friend Shared Sub Main(ByVal args As String()) ' Create Bytescout.PDFExtractor.MultimediaExtractor instance Dim extractor As New MultimediaExtractor() extractor.RegistrationName = "demo" extractor.RegistrationKey = "demo" ' Load PDF document ' (!) We do not provide the sample document, please load your own. extractor.LoadDocumentFromFile(".\audio.pdf") Dim i As Integer = 0 ' Initialize sound clips enumeration If extractor.GetFirstAudio() Then Do Dim outputFileName As String = "audio" & i & extractor.GetCurrentAudioExtension() ' Save sound clip to file extractor.SaveCurrentAudioToFile(outputFileName) i = i + 1 Loop While extractor.GetNextAudio() ' Advance sounds enumeration End If ' Cleanup extractor.Dispose() End Sub End Class