Playing byte array - irrKlang Forum

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	Playing byte array

goldengel Guest
Quote
2012-06-25 19:58:36

Hi

I've tried to play my bytearray by using irrklang. But it does not play anything. Can you help me to get any noises out of the speakers?

   Dim _AudioDevice As New irrklang.ISoundEngine(irrklang.SoundOutputDriver.AutoDetect, irrklang.SoundEngineOptionFlag.DefaultOptions)


        Dim Src As irrklang.ISoundSource
        Dim Format As New irrklang.AudioFormat()
        Format.ChannelCount = 1
        Format.Format = irrklang.SampleFormat.Unsigned8Bit
        Format.SampleRate = 4000
        Dim Bo As Boolean
        Dim newD As New List(Of Byte)
        For i As Integer = 0 To Data.Length * 100 - 1
            If Bo = True Then
                newD.Add(255)
            Else
                newD.Add(0)
            End If
            Bo = Not Bo
        Next
        Format.FrameCount = newD.Count
        _AudioDevice.SoundVolume = 1

        Src = _AudioDevice.AddSoundSourceFromPCMData(newD.ToArray, Now.Ticks.ToString, Format)

niko Moderator
Quote
2012-06-25 20:37:15

Hm, that code only adds the sound source, you are not actually playing it. Maybe that's the problem?

goldengel Guest
Quote
2012-06-26 08:18:59

Hm, that code only adds the sound source, you are not actually playing it. Maybe that's the problem?

What a pitty. Yes that was the problem!

new:

        Dim SoundName As String = "Mem"
        Src = _AudioDevice.AddSoundSourceFromPCMData(newD.ToArray, SoundName, Format)
        _AudioDevice.Play2D(SoundName, False)

goldengel Guest
Quote
2012-06-26 08:19:43

Thanks Niko for your quick help!!

goldengel Registered User
Quote
2012-06-27 10:06:11

irrklang does not work because after using the code above I receive an error message after random calls and time:

Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

VisualStudio breaks on line:

 _AudioDevice.Play2D("MEM2", False)

The code is the one above. Content of Data should not be important. But Byte array length goes from 30 to 5000.

But the device does call the _AudioDevice.Play2D methode several times (also possible parallel) with different Tag names to play.

Any advice?

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