Messages

1

Audio / Re: .Net Audio Issue on Live Stream

« on: May 08, 2017, 10:30:14 am »

Hi eXpl0it3er,

Thanks for your time and help.

I've tried both, buffering and immediately playing it back. The buffering just moves the "Click"-Sound to the end of the buffer. With that in mind, the problem is just a bit better, but for sure costs delay-time.
So even if I buffer a whole Second, I will hear the Sound each Second and loose a lot of realtime speed.

In generel I've implemented a Buffer for checking and merging splitted packets together and removing the "jitter". So I think the Networking-Part is just fine. I got a really good performance and clear voice, except of these "Clicks".

The Problem you described(draw the audio signal back to 0 at the end) will be definetly my problem.
Do you have any idea how I can avoid that?

The only thing coming to my mind is to buffer as long as there is a signal near to 0, splitting it there, playing just the left part and buffer the right part to the next packet.

this may work. So, What do you think?

Thanks again, even if we dont find a solution for that, you already helped me alot.

best regards
trooper

2

Audio / .Net Audio Issue on Live Stream

« on: May 05, 2017, 04:40:06 pm »

Hello,

Im really fresh to SFML, so first I want to say thanks for such a great Project.
Actually, Im implementing a Live Voice-Chat over the Internet(with SFML.Net) and already got it working.

When the Voice-Packet is send over the Network, it will be handled by the server which returns it with some more informations. On Client Side I extract these informations and call a Sound-Playing-Function with the voice samples as a byte array(for networking).
Well the packets coming in right here are in a really short intervall (100ms)

this code handles the packets and playing them:

private void PlayAudioData(byte[] data, float[] myposition, float[] mydirection, float[] talkerposition, bool self)
        {
            //set my position
            Listener.Position = new Vector3f(myposition[0], myposition[1],myposition[2]);
            //rotation not implemented in protocol right now
            Listener.Direction = new Vector3f(mydirection[0], mydirection[1], mydirection[2]);
            //if i muted the speaker then dont play
            if (outMuted)
                return;
            //convert audio data back to short
            short[] sdata = new short[(int)Math.Ceiling((double)data.Length / 2)];
            Buffer.BlockCopy(data, 0, sdata, 0, data.Length);
            //load into the buffer
            buffer = new SoundBuffer(sdata, 1, this.SampleRate);
            sound = new Sound(buffer);
           
            //set speakers position
            if(self)
                sound.Position = new Vector3f(talkerposition[0]+1, talkerposition[1]+1, talkerposition[2]+1);
            else
                sound.Position = new Vector3f(talkerposition[0], talkerposition[1], talkerposition[2]);
            sound.RelativeToListener = false;
            sound.MinDistance = 1f;
            //loudness regulation, lower value = louder sound from distance
            sound.Attenuation = 4;
            sound.Play();
        }

the Problem is, that after each Sound.Play, a short clicking sound appears (like abrupt voice-stopping).
With 100ms packets right here, this disturbing sound appears 10 times a second.

Is there a way to solve this problem?

thanks
trooper