Re: DirectSound from Memory in C#

darkin8 — Tue, 28 Jul 2009 12:56:51 GMT

Hello. Did you find solution for your problem? I have the same noise in my sound.

DirectSound from Memory in C#

Starduster — Fri, 03 Jul 2009 11:41:11 GMT

I have written a C# program that takes raw PCM audio from a USB port and
plays it with DirectSound. The audio originates from a microphone in a
wireless remote control and is sent to a USB receiver.   I read the audio
with the SerialPort in System.IO.Ports and put it in the SecondaryBuffer.
While the audio is understandable, it's not good quality... sort of an echo
and clipped at the end of each packet.

I'm obviously new at C# and DirectSound and here's the code I'm using. I'm
just taking the sound packets as they arrive and stuffing them in the
SecondaryBuffer. I'm guessing there is a better way to do that. Does
anyone have any suggestions as to how to clear up the audio?

Thanks,

Steve

        remoteFormat = new WaveFormat {
            AverageBytesPerSecond = 8000,
            BitsPerSample = 8,
            Channels = 1,
            SamplesPerSecond = 8000,
            BlockAlign = 1,
            FormatTag = WaveFormatTag.Pcm };
        sounddevice = new DS.Device();
        sounddevice.SetCooperativeLevel(this, CooperativeLevel.Priority);

        buffDescription = new BufferDescription
        {
            BufferBytes = 60,
            Format = remoteFormat,
            DeferLocation = true,
            GlobalFocus = true
        };
        buffDescription.ControlEffects = false;
    }

                        //soundBuffer contains the raw audio

                        audioBuffer = new SecondaryBuffer(buffDescription,
sounddevice);
                        audioBuffer.Write(0, soundBuffer,
LockFlag.EntireBuffer);
                        audioBuffer.SetCurrentPosition(0);
                        audioBuffer.Play(0, BufferPlayFlags.Default);

Audio/XACT

Re: DirectSound from Memory in C#

DirectSound from Memory in C#