Can I convert SPDIF digital audio signals to analog RCA outputs?

Question

I have a home theatre scenario where I have component video and SPDIF audio delivered to a room. I'd like to be able to connect the SPDIF digital audio to the good old "stereo RCA" inputs of the TV.

To do so I need a small, cheap box that will take SPDIF digital in and produce either analog stereo or analog surround signals.

I'd think this would be easy, but can't find anything besides this, and I'm not even sure if that does it:
http://www.amabilidade2002.com/toslink.htm

So... SPDIF in, left and right analog RCA cables out. Anyone know of a solution? Thanks!

By the way, yes I understand this downgrades audio. Its just for watching the news and stuff where you don't want it run through the whole surround setup, or where the room doesn't have a receiver.

Still looking for a small simple "DAC in a BOX" to do this...

Answer 1

It makes no sense to do what you want to do.
Stereo Audio is just two thin cables vs one s/pdif. Just route to your rooms RCA, stereo cables and you don't need any silly boxes. In A/V processing, the fewer conversions you do the better quality you have. Why downconvert digital audio to stereo if you can transmit stereo to begin with!

Answer 2

This Site Might Help You.

RE:
Can I convert SPDIF digital audio signals to analog RCA outputs?
I have a home theatre scenario where I have component video and SPDIF audio delivered to a room. I'd like to be able to connect the SPDIF digital audio to the good old "stereo RCA" inputs of the TV.

To do so I need a small, cheap box that will take SPDIF digital in and produce...

Answer 3

It is all about the transport protocol. The HD (ATSC) service you get is on a specific type of coax (RG-6) this will handle the broadband digital signal into a receiver. The specified communications are a poled interrupt and carried along at specific modulated frequencies that carry the data in a digital form. The speed and amount of retransmission or signal bit paring for error detection make this a rugged transport. The reason most cable providers had to change out the existing RG-59 cabling that they had was to account for signal entropy and far field harmonics. The existing cable could not deal with any change in temperature or even humidity to reliably carry a signal. Hence the use of a higher bandwidth cable with a different set of RFI/EMI shielding. Signals can range from very low 500kHz to the GHz range. The RF cabling referred to is a AV connection one that is decoded by what ever box and then re-modulated to an antiquated carrier with less of lines of resolution with audio and has a lot of issue with interference this modulation conforms only to NTSC standards and thereby would not be capable of a HD signal. That said the proper cabling is important in a system. the cabling you choose should be 10% of your total system cost. Monster is a great value brand and if the proper level of cable is sold to match equipment then you will get good results. It is not a 10% to component cost but total system cost. You should be able to get $100 dollars worth of cable for a $1000 system and get 98% performance out of the system. However to get the remaining 2% you will have to invest a cabling cost of 70% of system cost, that is what we call a diminishing return of performance. Most systems are designed with a 5% flux in signal quality so at worst two components will have 6% loss but they are designed to 5% so we are really only talking about 1% signal improvement. Now on to the Digital is digital it doesn't matter. Again it is all about the transport. don't even get me started on HDMI, so I will ignore that altogether. Even though a digital audio signal is digital it can be affected by interference, meaning that the DAC is programmed to interpolate results for a signal that is not there based upon the previous and next signal. But what if a key signal is contained in that sample? You loose it, forever. This is why a good Coax or Optical cable is key to good performance. Analog of course you need a good cable ( but not too good remember the diminishing returns above). HDMI is such a flawed transport on so many levels ( connector, twisted pair cabling, error detection and correction AV sync), that the only reason I recommend a Monster cable for it is the improved connector that won't fall out, otherwise it is a little too much for most systems. It is good you question cabling, it is a integral part of any system and should be given consideration when you set up and evaluate your purchase. However if Best Buy and Circuit City are where you think the top of the line is then stay away from anything besides the 10% rule. Also consider power conditioners and cable management, these two alone will help improve the performance of your system. Happy Home Theatering

Answer 4

You are on the right track. You need a digital-to-analog converter (DAC) and you seem to have found an inexpensive one. You certainly don't need an expensive high fidelity DAC to drive a TV's speakers. Assuming the TV's audio inputs are line level rather than speaker level, that should work. You would only need the extra amplification provided by a receiver if the TV's audio inputs were speaker level.

Answer 5

Firstly, I must ask why you would want to downgrade your audio. ? Makes little sense.

Next, why send audio to your tv? TVs has some of the lowest quality speakers.

So, to answer your question, you need a receiver to convert any digital signals to an audio sound, or a computer with a digital input and sound card out... there is no quick 'box' fix.

Answer 6

Hey there,
A very good program to convert audio is Total Audio Converter. Free download here: http://bitly.com/1sW2oXl
I hope it helps

Answer 7

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