Search found 6 matches

by Brovidio
Fri Dec 04, 2020 10:37 am
Forum: SNESdev
Topic: Audio Receivers “Calculating” Stereo
Replies: 9
Views: 2433

Re: Audio Receivers “Calculating” Stereo

I suppose it's possible that the Multi Out adapter could translate "L+R" and "L-R" into the separate "L" and "R" signals that stereo receivers actually need, though it would seem rather strange to do it that way when it'd be much cheaper to just use L and R separately from the beginning and require...
by Brovidio
Fri Dec 04, 2020 10:36 am
Forum: SNESdev
Topic: Audio Receivers “Calculating” Stereo
Replies: 9
Views: 2433

Re: Audio Receivers “Calculating” Stereo

Interesting article I found about Mid-Side audio.
I guess it’s something that was done a lot before the era of digital audio.

Still not sure what the implications are for the SNES.

https://www.sonible.com/blog/mid-side-processing/
by Brovidio
Fri Dec 04, 2020 7:05 am
Forum: SNESdev
Topic: Audio Receivers “Calculating” Stereo
Replies: 9
Views: 2433

Audio Receivers “Calculating” Stereo

I noticed this when looking at the pinout for Nintendo’s Multiout connector: https://i.imgur.com/o07kVXg.jpg I interpret this to mean that Nintendo devices send Mono (L+R) audio out of the Left (white) RCA jack, and that stereo is deduced by the receiving device IF the Right (red) RCA jack is also c...
by Brovidio
Thu Dec 03, 2020 11:42 am
Forum: NESdev
Topic: NTSC CVSB Question
Replies: 11
Views: 2483

Re: NTSC CVSB Question

Yes. In the ideal – which the PPU isn't – it's just the dividing the YUV plane along 12 angles. Much like how the Apple 2 and CGA divide the YUV plane into 8 angles, the 2600 into 15, or the VIC-20, C64, and TED into 5, 6, or 14 out of 16. Try playing around with Drag's generator here: http://drag....
by Brovidio
Wed Dec 02, 2020 6:20 pm
Forum: NESdev
Topic: NTSC CVSB Question
Replies: 11
Views: 2483

Re: NTSC CVSB Question

Thanks for the responses.

I have no idea how the PPU DAC works.

BUT, does its design give any insight into why this particular set of colors was chosen?

Are they mathematically convenient in some way?
Or are they the result of evenly dividing some range of input states?
by Brovidio
Wed Dec 02, 2020 10:59 am
Forum: NESdev
Topic: NTSC CVSB Question
Replies: 11
Views: 2483

NTSC CVSB Question

I apologize if this topic has been beaten to death, I’m just trying to wrap my head around it. Like any encoded format, Composite Video could not exist without specifications detailing how it should be encoded and decoded. If provided with a clean signal, how could there be ambiguity in how to prope...