Early 4004 in Alert, (whelen) attack and voice.

[kswx29]

Voice is pretty clear and does not have those annoying tones.
http://www.youtube.com/watch?v=bg99MtxFoEA

[uncommonsense]

Nice video. You don't hear too many 4000s that sound like that.

That clearly has the tone generation system of the 3016s except set to max out at a lower tone.

And I never have heard a Whelen sound attack when it kept rising during the wind-up. Usually they just start up into it. Very interesting.

Overall awesome, awesome video!