cheesehead
Lifer
The TDA1543 is the most popular DAC in the DIY audio world at the moment, and for good reason: It's cheap (about 3$ ea. on eBay), easy to use, has both channels on one chip (although most people use about eight in paralell), and sounds good.
However, it needs I2S.
I2S (a standard for audio communication within a device between two IC's) is a pretty popular way of sending audio data to a S/PDIF converter. Although it would be easy to get a USB to S/PDIF soundcard, converting from (whatever it starts as) -> S/PDIF and then S/PDIF-> I2S will kill some signal quality, and add complexity.
So, does anyone know of a cheap USB soundcard I can hack I2S out of? If you know the IC, I can easily find out the rest. The SoundBlaster series generally re-samples from 44.1khz to 48khz, and although I'm a little fuzzy on how they work, I do know that they make for crappy DACs.
If you can tell me a cheap soundcard with a PCM2706 or similar, that would be PERFECT.
However, it needs I2S.
I2S (a standard for audio communication within a device between two IC's) is a pretty popular way of sending audio data to a S/PDIF converter. Although it would be easy to get a USB to S/PDIF soundcard, converting from (whatever it starts as) -> S/PDIF and then S/PDIF-> I2S will kill some signal quality, and add complexity.
So, does anyone know of a cheap USB soundcard I can hack I2S out of? If you know the IC, I can easily find out the rest. The SoundBlaster series generally re-samples from 44.1khz to 48khz, and although I'm a little fuzzy on how they work, I do know that they make for crappy DACs.
If you can tell me a cheap soundcard with a PCM2706 or similar, that would be PERFECT.
