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Well, the topic title already describes what te problem is. I am using an FM transmitter on the soundcard output of my server. But if i use the livelink there is no output, i did configure breakaway to give L/R output on the speakers.
If i use the pipeline it works ok. But the problem is that the new pipeline still gives hackling, especially when i log on remotely to my server. I also notice that CPU usage is getting higher if i use the pipeline, livelink does a much better job.
Does anyone (or Leif) know why this is occuring?
I know "dubbelposting" is not allowed, but i really need an answer… Are you still alive Leif?
I hope somebody has a good solution for the problem. Otherwise i have to connect the FM transmitter to the mixing panel, but then i can’t listen to my tuner at the same time i think (that one is connected to my mixer too). Maybe with the alt 3-4 output. But it’s not ideale at all.
Could you explain your setup in as much detail as possible?
I don’t understand your setup, and if I have to guess, any answer wouldn’t be valid.
///Leif
Well, i use a standard on board HD soundcard (from realtek). I have installed SAM Broadcaster and BBP on the server. I am using livelink to transport the sound to BBP, and in BBP it’s configured like this:
I am using the edcast plugin with the lame encoder inside to transport the audio on to the web. That is all working fine. But as you can see the speaker output on my soundcard isn’t producing any output…
On that output my FM transmitter is connected. The settings in BBP are right for the L/R output, it has to put the output to the speakers (and edcast, but that part is working fine).
If i am using the pipeline instead of livelink, then BBP gives output to the speakers and edcast. With the livelink it is only giving output to edcast. I could use the speaker output in SAM, but then the audio isn’t processed by BBP, so that is not an option. I find it very strange that there is no output on the speakers when using livelink.
Do you need to know more details?
If you use the Air out in SAM you will hear the BBP processed audio… but BBP won’t feed the L/R out when using LiveLink, I suspect (Leif can confirm) it’s because Livelink interrupts that path and feeds it back to SAM automagically.
That’s correct — livelink interrupts the path and sends the audio back to SAM.
The trick is to disable the L/R output in BBP (and if that doesn’t work, set it to an unused pipeline), and instead set SAM to output to the sound card. That way you’ll get the processed sound from the sound card.
Pushing the sound back to the sound card as well is possible in theory, but not in practice, due to timing issues. When LiveLink DSP is in use, Breakaway uses the DSP host application as the clock source, and thus Breakaway’s timing gets very jittery. This doesn’t matter for LiveLink DSP as there are large buffers in place to prevent any issues, but it doesn’t have these large buffers for the output sound card.
I may revisit Livelink DSP in the future when I have a better idea for how to implement it, but for now, the usage scenario for Livelink is very strict.
Best,
///LeifThanks for the answer! I didn’t knew livelink is also pushing back the audio to the host application, i thought it only transported the audio directly from the host to BBP.
I only question if SAM is not putting his own audio into the soundcard instead of the audio sended back through livelink. Mmm i am now testing it, it is actually working! If i close BBP when SAM is playing SAM is playing his own audiostream, when i turn BBP on BBP’s output is pushed into the speakers.
Then i am keep using Livelink instead of the Pipeline. I can also use the new registery modification for the pipeline (to stop the hackling and stuff), didn’t try that one yet. But Livelink is still using less CPU capacity as the pipeline.
I am still wondering why that is the case
Edit: Correction! It appears to be the onboard soundcard that is eating 25 – 30 % CPU power of my AMD Athlon X2 5050E processor. SAM and BBP and are using together only 10 – 15% of the CPU power, along with Windows Server 2008. But i turned on only the necessary processes, so everything is optimized for low CPU power. BBP is running at full capacity (maximum quality) 😉
Strange that a onboard soundcard uses that much CPU power…
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