Any suggestions on which DSP to be used for 8 channel I2s out with 2 channel input? To be interfaced with TAS6584

Is there any DSP chip simpler way to implement with TAS6584 chip as the amp chip input is with I2s. Something simpler like in the image with SPDIF input.
 

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This ADAU1452 board (several vendors on Aliexpress) has both TOSLINK and coax SPDIF connectors which simplifies input. The TAS6584 chip looks interesting, sort of equivalent to a TPA3255 power wise (at least up to 45V) , but with I2S inputs. I couldn't look at the full TAS6584 datasheet without requesting it from TI just now. Probably will get rejected. Due to current export restrictions?

Screenshot 2023-11-04 095816.jpg
 
@ernperkins Yes, for some reason information for this chip is really strict.
Understandable, Class D + H in a single PCB with this level of quality is quite impressive IMO.

Looking for DSP solutions with i2s out as well, I have the ADAU1466EVM here so might see if using that chip is a possible solution.

@rhythmsandy Are you planning to make a DSP+TAS6584 solution for sale?
 
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Off topic, I apologize : anyone aware of a board usb or HDMI input with 6 or 8 x I2S output with independant ruling of each I2S output in order to make a multichannel DAC for active loudspeaker ?

Goal : to do the DSP/EQ in the digital domain with a PC or solid rendere à la RpI to avoid the classic ADC to DAC convertion of the plate amps.

@rhythmsandy : your're working at a power DAC or more a classic active loudspeaker solution ?
 
What do you mean by "with independent control of each I2S output"?
And "with 6 or 8 x I2S output" - you need 12 or 16 channels?

I did 16ch DAC with USB interface ~10 years ago, but I used TDM instead of I2S, because there were not enough special outputs in XMOS chip.
(Finally project was dropped due to the some reasons).

Alex.
 
My english, sorry : I meant something you can route from a soft in a pc or for illustration that proceeds like MiniDSP Flex 8, , so 6 to 8 channels to have a stereo active filter for 2 loudspeakers and eventually 2 subs !

So yes 4 I2S output if the multiplexing of the data channel can be managed before for each of the 2 data channel of an I2S line. I think DIYhink US made something like this but not sure of the layout quality.

Something to plug several I2S input 2 channels diy DACs to be managed from Camilla DSP software to make active loudspeakers with our prefered DAC devices if you prefer !
 
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So yes 4 I2S output if the multiplexing of the data channel can be managed before for each of the 2 data channel of an I2S line

It will depend on the crossover used in the PC.

I used JRiver in a PC (with an 8-channel USB interface) and DePhinoca (unfortunately, its author abandoned this project), and it was possible to make a frequency separation from a stereo signal and send them to any channel of the DAC.

Alex.
 
@ernperkins Yes, for some reason information for this chip is really strict.
Understandable, Class D + H in a single PCB with this level of quality is quite impressive IMO.

Looking for DSP solutions with i2s out as well, I have the ADAU1466EVM here so might see if using that chip is a possible solution.

@rhythmsandy Are you planning to make a DSP+TAS6584 solution for sale?
That is quite impressive chip, indeed. I've been looking for something like that to replace TAS5548+2xTAS5634 in my 4ch DSP amp project (posted on diyaudio here). The combo works fine but BOM cost is too much. I'll try to request the datasheet from TI too but the chance to get it close to zero 🙂

I noticed that you mentioned it before but somehow I only looked at the datasheet just today...
 
@eclipsevl Yes, I think it is a very innovative chip, seems they have worked very hard to make this.

Some of the background motivation for the TAS65XX family design is in this document by Scott Bryson from 2019:
https://www.ti.com/lit/an/slaa888/slaa888.pdf

Since this information seems to be freely available I guess there is no harm in sharing the links.
Performance summary of TIDA-020033
https://www.ti.com/video/6287333584001

The TAS6584 and TAS6582 make me very excited to say the least.
 
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Do you think guys such a DSP to be powerfulll enough for a 6 channels for a 3 ways ? Eventually problem of DSP with bass driver and delay below 80 hz ?


clock input to make it better sounding (noise floor, etc) than the not so good Wondom ADAU1452 or the MiniDSP nanoDigi ?

is this works quiet enough https://www.diyaudio.com/community/...tichannel-input-output-interface-york.413504/ ? (have no idea about all those front ends in order to diy multichannel I2S solutions)
 
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