[AudioI] octo

[Matt]

Yes the Isolated sound card really is awesome ! stereo input and output.

Regarding octo analogue output levels. From the data sheet,

https://statics.cirrus.com/pubs/proDatasheet/CS42448_F5.pdf

The peak to peak output voltage is around 0.65 * 5V = 3.25 v.

On 9/4/20 11:18 pm, Alberto Novello wrote:
> Hi Matt, the new soundcard looks awesome does it have 2 inputs and 2 
> outputs or more?
> I also would like to ask one more question about the OCTO, what are 
> the output levels? I'm trying to design my amplification circuit 
> before I receive it.
> I need two channels at -5, +5V and 3 channels at 0, 5V
> Thanks so much.
> A
>
> On Thu, Apr 9, 2020 at 1:42 PM Matt <matt at audioinjector.net 
> <mailto:matt at audioinjector.net>> wrote:
>
>     Sounds like an interesting way to control lasers !
>
>     The octo base sound card does have DC output capability. The RCA
>     connectors which ship with it have AC coupling caps on board,
>     which would could potentially short out.
>
>     There is an octo template here which shows you the output wiring
>     from the base sound card. Once you receive your octo if you want
>     to short the AC coupling caps, I can point out which ones they
>     are. If you do short them out, then I don't take any
>     responsibility in any way for the effect of the modifications you
>     will conduct.
>
>     Here is the octo template for your own designs if you want to make
>     some :
>
>     https://github.com/Audio-Injector/AudioInjector.Octo.template
>
>     Check the pdf there :
>
>     https://github.com/Audio-Injector/AudioInjector.Octo.template/blob/master/AudioInjector.Octo.sch.pdf
>
>     The KiCad files give you a head start.
>
>     Matt
>
>     Check out our latest kickstarter :
>     https://www.kickstarter.com/projects/flatmax/audio-injector-isolated-dac-and-adc?ref=ppNew
>
>
>     On 9/4/20 8:31 pm, Alberto Novello via People wrote:
>>     Hi I'm trying to develop an hardware for my laser show
>>     (www.jestern.com <http://www.jestern.com/>) that I control with
>>     audio. Right now is based on bela (bela.io <http://bela.io/>) but
>>     I'm thinking of using Raspberry Pi because cheaper and has better
>>     quality in my opinion (bela has some aliasing frequency that I
>>     owuld have to remove with a bandpass filter). In particular I'm
>>     in need for a soundcard that has 5 or more outputs, is DC coupled
>>     and 96Khz sample rate.
>>     Is it possible to DC your output caps? Just bought one for
>>     testing prototyping.
>>     Yes one last thing can you send me the specs of the octo? I need
>>     the output voltage and input to design the rescaling circuit.
>>     Thanks
>>     A
>>     -- 
>>
>>
>>     || | | ||| |  ||  || | ||||| || | || | ||| | ||||| | | ||| | ||||
>>     |  || ||||
>>
>>     ALBERTO NOVELLO / JesterN
>>     video snippets: *instagram* <https://www.instagram.com/_jestern_/>
>>     av compositions: vimeo <http://vimeo/>
>>     site: jestern.com <http://jestern.com/>*
>>     *shop: bandcamp <http://jestern.bandcamp.com>
>>     audio: soundcloud <http://soundcloud.com/jestern>
>>
>>
>>     || | | ||| | ||  || | ||||| || | || | ||| | ||||| | | ||| | ||||
>>     | || ||||
>>
>>     If for any reason you wish not to receive any more messages from
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>>     Mi scuso per il disturbo.
>>
>     -- 
>     Check out our latest kickstarter :
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>
>
> -- 
>
>
> || | | ||| |  ||  || | ||||| || | || | ||| | ||||| | | ||| | |||| |  
> || ||||
>
> ALBERTO NOVELLO / JesterN
> video snippets: *instagram* <https://www.instagram.com/_jestern_/>
> av compositions: vimeo <http://vimeo/>
> site: jestern.com <http://jestern.com/>*
> *shop: bandcamp <http://jestern.bandcamp.com>
> audio: soundcloud <http://soundcloud.com/jestern>
>
>
> || | | ||| |  ||  || | ||||| || | || | ||| | ||||| | | ||| | |||| | || 
> ||||
>
> If for any reason you wish not to receive any more messages from this 
> email, please send an email with REMOVE as subject. I'm sorry for the 
> inconvenience.
> Se per qualsiasi ragione non desideri ricevere piu' messaggi da questo 
> indirizzo, mandami un messaggio con REMOVE nel soggetto. Mi scuso per 
> il disturbo.

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