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That makes total sense, Thagurt.
174 / 160 = 1.0875
44100 * 1.0875 = 47958.75
That’s close enough to be a rounding error.
It seems BBP is telling Edcast that it’s sending audio at 44100 even though the rate is actually 48000.
Here’s a big question — are you using Livelink in any way?
///Leif
Hi Jeroen!
You’ll actually get the most analog, clean sound by completely removing all the analog pre-processing and keeping just the BBP software. 🙂
Chaining processors is generally a bad idea, because a basic rule in audio processing is that every later stage’s release must be faster than the previous stage’s attack. If this isn’t followed, there will be random, strange ducking on transients (as two stages duck at the same time, but one release faster than another).
BBP follows this rule internally, with all presets, but if you add pre-processing there’s in my humble opinion no way to make it sound good.
If you run only BBP, what do you feel is missing from the sound? Perhaps we can help you adjust the preset.
Vriendelijke groeten,
///LeifThis is a really strange problem! It’s definitely a sample rate mismatch, but I’m also curious how it could happen. Please post screenshots of your configuration, and explain how you’ve connected things together, and we should be able to figure it out. Also, are you running Edcast DSP or Edcast Standalone?
///Leif
Sigmacom, that looks AWESOME! Direct digital synthesis in a 66 MHz CPU, how the hell did you do it?? 🙂
///Leif
TBacker, have you actually tried to run BBP on a calibrated transmitter and comparing to the sound of the other stations in town, making sure you’re modulating to the same level as they are?
Perhaps that’s where the discussion ought to start.
///Leif
Safe Mode in Breakaway means using DirectSound which is guaranteed to find all audio devices, but may cause slightly higher latency.
Normally, Breakaway uses Kernel Streaming, which is more of a Windows XP-thing, and not well supported in Vista and Windows 7. I will work on a better solution for Vista and W7.
///Leif
Yep, all the controls in the world, just not clean and competitively loud at the same time 🙂.
///Leif
Hi Maniak!
I’m about to upgrade to Windows 7 myself, as other customers are bound to do the upgrade now as well.
However, the first thing I can think of is, first of all, make sure something is physically plugged into the Realtek output — for example speakers or headphones.
Then, try to go through the wizard again. If you see the expert settings as below:
Click the Wizard button.
If you don’t see the device in the list, then make sure Safe Mode is checked. You *should* see it in the list then.
Please let me know if this solves the problem.
Best,
///LeifYeah, I’d use the same. I’d switch the processor to mono mode though, so that mono summing is done before the processor, instead of after. This makes a big difference in the fullness of the mono sound.
///Leif
Post-it, unfortunately the sound card calibration is only a small part of the problem. Tuners usually require much more tilt and eq compensation than the sound card. So, posting these would be worse than not posting, as there will then be people who believe that by using these settings they’ll be calibrated correctly.
///Leif
4 days!! That’s really not good. Well, I’ll hit the 4-day mark very soon myself, so at that point at least it will be easy to debug.
Although, I think if this was consistently happening, I would have heard it from a lot more people.. Well, let’s see what happens — I’m currently working hard to tie up all the loose ends that have happened from the heavy feature development as of the last few months.
///Leif
Hi, Rocco!
Yes, Frank Foti tried to get his idea for digital MPX adopted by the industry in the 90s, but it never took off.
I believe if it will ever happen in the future, Ethernet will be the interface, because of it’s extreme ubiquity and extremely low cost. Either that or AES 192 i guess.
///Leif
