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The pulse VU was originally created for the PSP. It can be adapted for the ps4...... if you can find any left.
You only have a digital audio signal on hdmi, you probably need to convert it to an analogue signal prior to using it for sound reactive mods. I think you can get hdmi audio extraction boards fairly cheaply on ebay.
my auction still list them there i believe.
I'm not balsy enough to try it out first but if someone made a good tutorial I would definitely do it
I did a brief look around, Cirrus Logic makes a nice little chip (albeit a little overkill for the application) that could probably get this going on the xbone/ps4, see CS8416. It converts the S/PDIF signal to a serial based audio stream, which would be easily processed by a nice microcontroller, hell you could probably fft it on the fly. Alternatively you could pair that chip with I2S decoder, something like the UDA1345TS and get that to provide you with a raw analogue output and pass that through a chain of filters/amplifiers -> some current gain -> drive some leds. I am actually kind of keen to work on this as a little project (I don't have an current console but it would translate pretty flawlessly between most systems). Would anyone have any interest in sound reactive board purpose built for driving LEDs from a digital audio signal (maybe configurable frequency ranges ect)?
this is the chip your talking about?http://www.cirrus.com/en/pubs/proDatasheet/CS8416_F3.pdf