The Intellivision Crowd Noise?

[Jaynz]

Simple and direct question.. has anyone managed to get the 7800 to play the Intellivision's famous 'crowd' noises? (As featured in their sports games).

 

I'm actually thinking this would be a good first lesson for me to get started in 7800 programming, and it's something I can use for some things I had in mind for the future. But I haven't programmed a sound card directly in *mutter mutter* years, so I was wondering if this had been done, or if it was possible to look at the INTV's code to figure out how to port it over...

[EricBall]

The Intellivision uses a General Instrument AY-3-8910 sound chip which is a lot more capable than the sound generator built into the 7800's TIA or even a Pokey. You might be able to generate something similar with the TIA's noise (AUDC = setting.

[PacManPlus]

If you wanted to get really close, you would (IMHO) have to use *two* channels... If you listen closely, during the 'white' crowd noise you hear some 'whistles' overlaid.

[Jaynz]

What it SOUNDS like is a bell-curved volume of white noise (so, one channel) that then gets two spiralling whistles, a couple of hard 'beeps', another whistle, and two more beeps on the second channel before it fades out. You couldn't do this sound while doing any other noise (easily, making the 7800 be a sound mixer would go beyond my thoughts on this)... but it seems doable.

[PacManPlus]

ok You just said basically the same thing I did, but with more detail. with the major point being that it takes two channels to do the sound justice

[Jaynz]

Sorry, just "thinking out loud" of how to make it work in more detail.