All, I recently finished developing an app for the iPad/iPhone that can modify the key or tempo of songs in your iTunes library (if they are not DRM'd). The app is called Tune Transformer, and it allows one to take any song in their iTunes library, and change the key up or down as much as two octaves, or change the tempo from 10% to 400% of the original. One can also loop on any portion of the song.
I have targeted the app to budding musicians who want to learn songs, and music teachers. If a lick in the song goes by too fast, Tune Transformer can slow it down and loop on it, so the student can hear each note in the lick, and play along, repeating the lick over and over. Then they can slowly speed up the lick as they practice until they can play it full speed (or go even faster than full speed). Also, if a singer can't hit the high notes in a song, Tune Transformer can lower the key a few steps, so they can sing along. If a recorded song is a bit out of tune from the piano, Tune Transformer can fine-tune the recording to match the piano. TT can move pitch up or down in 20-cent steps. I used J to develop some of the algorithms for the app. The website is tunetransformer.com and the YouTube demo video is at: http://www.youtube.com/watch?v=6yqqg3wLpIo (That's me as the video narrator) The app is available on the app store. The app normally costs $10 in the app store. I might be convinced to give out a promo code or two (lets you get the app for free), if someone is willing to blog, Facebook, or Tweet a review about it. Skip -- Skip Cave Cave Consulting LLC Phone: 214-460-4861 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
