[AudioI] Toslink input
Peter Heydenrych
peter at heydenrych.net
Fri Jul 24 00:49:39 UTC 2020
Not really...I am trying to build a more flexible version of the obsolete MiniDSP OpenDRC-DA8, but with optical input, balanced output and more flexible processor. With a Pi 4 and Ultra 2 I am almost there...
Peter Heydenrych
peter at heydenrych.net
On Fri, 24 Jul 2020, at 08:13, Matt via People wrote:
> Perhaps we should do a digital input + analogue output board.
> To do digital input properly it needs a software interface. The board is meant to tell the software what the incoming sample rate is.
> Do you have any ideas around that ?
> Matt
> On 24/7/20 9:20 am, Peter Heydenrych via People wrote:
>> I'd love to use the 8 balanced outputs of the Ultra 2 - just need an optical input instead of the analogs...
>>
>> Peter
>>
>> On Fri, 24 Jul 2020, at 07:18, Matt via People wrote:
>>> To add a toslink input, it would need to operate the I2S clocks - that would require a different hardware topology to the current devices.
>>> I think we should do a new product based on this concept. Would you be using outputs ? If so what type of output would you want ?
>>> Matt
>>> On 24/7/20 8:40 am, Peter Heydenrych via People wrote:
>>>> Thanks for the quick reply, Matt. Would it be possible to add another device to bring in a Toslink signal? Do you know of anything that would be compatible?
>>>>
>>>> Peter
>>>>
>>>>
>>>> On Fri, 24 Jul 2020, at 06:37, Matt via People wrote:
>>>>> Hey Peter,
>>>>> I would love to be able to do this, however that tollink connector is driven by the codec. They do the I2S to S/PDIF conversion on chip. S/PDIF receiving is more complex then sending because we also need to interrupt the operating system to notify it of a sample rate change.
>>>>> Perhaps it is a good idea to do a future project with the S/PDIF injection capability.
>>>>> Matt
>>>>> On 24/7/20 8:27 am, Peter Heydenrych via People wrote:
>>>>>> Hi all,
>>>>>>
>>>>>> I have just ordered an Ultra 2 but now see the Toslink option is an output.
>>>>>> Is there any possible way to add a Toslink input to a Pi + Ultra 2 system?
>>>>>> I'd prefer it if the Toslink output could be converted to an input, but adding another module to the system would be acceptable.
>>>>>>
>>>>>> Thanks,
>>>>>>
>>>>>> Peter
>>>>>>
>>>>>>
>>>>>>
>>>>>>
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