[hatari-devel] LMC1992 and Microwire emulation

Laurent Sallafranque laurent.sallafranque at free.fr
Wed Mar 10 00:33:29 CET 2010


Hello Thomas,

I didn't know this datasheet, thanks.

I'm not a specialist at all with mathematics for sound, IIr, ...
I wish David could help us here.

He suggests to use an external application (the soundcard of the host 
computer or an external appli)

Is it a good way to go (some computers may not have a good soundcard).
What about the Wii emulation for example ?

In other way, having everything into hatari means a full portable 
emulator, but more cycles burnt for this.

David, is it possible for you to write something ?

Maybe we could have a full software emulation and a external emulation 
(choice would be possible via the parameters).

Any comment ?

Regards,

Laurent

PS : I've  returned into DSP emulation for now.
I try to understand why amanita demo (DHS) doesn't render sound.


Thomas Huth a écrit :
> On Mon, 08 Mar 2010 23:33:49 +0100
> Laurent Sallafranque <laurent.sallafranque at free.fr> wrote:
>
>   
>> Another question :
>>
>> Is there an order for effects computing ?
>>
>> Should I compute volume before and IIR after, or IIr before and sound 
>> after ?
>>
>>     
>
> Laurent,
>
> did you already have a look at the LMC1992 datasheet? You can get it
> here for example:
>
> http://pdf1.alldatasheet.com/datasheet-pdf/view/9091/NSC/LMC1992.html
>
> If I get the diagrams there right, the bass/treble filter comes before
> the volume control filter.
>
>  Regards,
>   Thomas
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>
>
>   




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