So lately I have been testing out the vex speaker, it seems to handle the RTTTL quite nice as seen in these videos
[LIST]
*]Mission Impossible (Robot C sample RTTTL)
*]He’s a Pirate (not very good)
*]Super Mario Bros
[/LIST]
I have done some tests with .Wav files but the only ones I can get to work are the sample ones that I got from robot c, not sure why they wont play, they download to the cortex perfectly fine but when I try to play them they dont work
Sounds nice and loud. Now time to use a couple Cotexes together and add harmony.
I was actually thinking that, but I don’t have another speaker 
otherwise I would have allready started on one
The real question… can it play this??? Nyan cat 8-bit - YouTube
And this for our team? 
http://www.youtube.com/watch?v=fMJTinMvB24&feature=related
The wav files need to be 8bit mono at perhaps 11kHz, something like that.
There is also a bug in the ROBOTC RTTTL converter (V3.08 tested) where notes above B5 are shifted down by two, for example A5 is 880Hz (correct) but D6 also converts to 880Hz (wrong).
Do you even need two Cortexes? Why not just two speakers?
Hmmm, how could I converted files to 8bit?
I believe there’s only 1 speaker port per Cortex.
Oh right, I forgot it plugs into SP. My bad.
At worlds just make sure you alliance partner has the melody part of your song, and your set!
And this for our team? http://www.youtube.com/watch?v=fMJTinMvB24&feature=related
ill do some tests, but I doubt it can play the full song
I don’t know if the speaker can connect to just a digital output port instead of the speaker port, and if it can, how can you program it? I don’t know about EasyC, but ROBOTC only gives you a resolution of up to 1 millisecond, and the sound functions are restricted to one port. I suppose you could use a closed while loops to get a higher resolution, but I don’t know how effective that would be.
EDIT: Didn’t see someone already pointed this out.
It would be epic if we could play some of Still Alive. We are planning on getting speakers and would love to play some music haha
Ok so I have downloaded ‘Still alive’ and converted it to an 8-bit .Wav file, but its still to big so im gonna shorten the song and see how much of it I can play
How big can each song file be?
Could you Y-cable speakers?
Even if you did, it would just be two speakers playing the same thing, as you couldn’t control them individually.
hmmmm converted a file to a 8-bit .wav file, changed it to 8000Hz tried playing it on the cortex and nothing happened -.-
True.
But I mean for the purpose of increasing the volume. I guess I should have worded my first post better.
Now all VEX needs is a Cortex external hard drive!