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No, it’s not enough – we need to transfer the audio signal for about 1 kilometer! We have a regular optical cable used for internet connections, not sumply for home audio, of course
I thought we could take the signal from soundcard’s optical out (for example, EMU 1212m or ESI Juli@), and this sound could be heard at the transmitter’s site.
So do we need some extra equipment to send sound to such a dictance, and which?What about EMU 1212m card, is it good to work with BBP?
The reason I placed my eye on it – it has optical OUT and optical IN . Now I want to take two such cards, one will be on a transmitting computer, another on a receeving computer at the transmitter’s site. Any good or bad comments about this card?We are going to send regular output (sound only, L/R), not MPX.
2 Boki, you wrote we need to have stereo coder – we have it.
But what we don’t have is any STL – I mean, any decoder yet, because we are just planning to set up a similar scheme in the future. Our studio (FM radio) is going to move to another place, far from the transmitter site, so such a scheme will be necessary. Now we are thinking about different variants, of course not too expensive, because we are a small budget radio station. So we can’t afford Optimod for 10,000 euro or more and STL for 3-4 thousand euro
Concerning how to send signal from the studio to optical fiber – i think, we have no problem at all – we are going to send it with a computer with ESI Julia onboard. But how to receive the signal on the transmitter site – this is still a question for us. I think, technically we can receive audio with another computer equipped with E-MU 1212M, which has optical input, but our transmitter is in a very far-to-reach place, it will be a problem if something wrong gets with the computer. PC with processing at transmitter site is possible but will be problematic. Maybe you could give some advice about a not expensive hardware box for decoding from optical fiber (S/PDIF, TossLink connectors) to regular analog audio?What is this extra equipment then? and what sound card with optical out would you recommend better? ESI Juli@ is good? Concerning plastic or glass fibre, I don’t know yet
I’ll put it in a different way:
how can we carry the MPX signal with RDS from studio to the transmitter? Are there any converters? I’ll remind, the studio is going to be around 1 km from the transmitter site, so the connection will be through optical fibre any way. Everything will depend on converters. I don’t know which ones are the best for usquote :Is the only connection to the transmitter site through optical cable? In that case I don’t think you can transmit the full MPX signal with the Juli@ card, since it says “max 96 kHz” on the specifications. You need 192 kHz. Then I think you are stuck with the Falcon doing the RDS and stereo coding at the transmitter.Today I climbed at the transmitter’s site, and checked if our Falcon model REALLY has optical input. It came out that it doesn’t, it’s optional, and in our case the slots for optical inputs are empty.
So the scheme must be different
I thought of bying Juli@ before because of its optical output, but now it doesn’t matter, so I think we’ll take M-Audio Audiophile 192 instead. It does have max 192 Khz!
So as far as understand, we may do the following: take signal from Audiophile’s S/PDIF (coaxial) to converter CO2 – Coaxial/Optical Bi-Directional Converter (http://www.m-audio.com/products/en_us/CO2.html) – than, after optical fiber we need one more box, to convert to analog – and then the signal will go to Falcons XLR analog inputs OR to the transmitter analog XLR inputs (if we buy a new RDS coder instead of Falcon)
Will everything work properly in this way? Or something is missing? Apparently the full MPX signal is missing, and BBP’s stereo coder function – is there ane way to carry it through optical fiber?- And does it really matter a lot which way to connect? (regular XLR inputs or composite BNC MPX input)As far as I understood, you used Falcon 35 in fully working mode, along with BBP? Not in bypass mode? Because you mentioned to turn off the pre-emphasis in Falcon. If it’s being run in bypass mode, pre-emphasis automatically turns off, as far as I know, or maybe I am wrong?
Frankly speaking, I would happily get rid of Falcon completely, the only good thing it does it’s RDS..Ah, here’s one more thing I forgot to mention about BBP. When I installed it, it somehow worked through "Pipelines", so that any sound played in computer passed throug BBP and you could hear it processed. But now I can not manage to return these settings, there’s no sound through pipelines, it only works with ‘line in’. What are the settings so that I could hear processed sound within my computer?
I’ll try the plugins you advised and comment later on them, thank you
