Rockbox Development > Feature Ideas

Play speed

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clumsymoe:
I've been wondering about this for a while. My first real MP3 player was a cowon U2, and the best part about it was the play speed. In the EQ section where BBE and all that jazz were there was a play speed that went from -10 to +10. I have no clue what the settings and speed for each one were but it was fun as heck to listen to songs in different pitches and speed. I think some versions of rockbox have this feature depending on the hardware, but I don't think they adjusted pitch, just the actual playback speed. I might be thinking of some default firmware though.

Anyway, here are my questions.

1) Is speed/pitch adjustment somehow hardware based or is it simply software?
2) If it's software, does it put a large hamper on CPU usage?
3) And if it's not a bad idea, how hard would it be to implement and how would one go about doing it? I don't have much (any) programming experience but I'd be willing to go dig around and learn some stuff to get this on my X5L.

JdGordon:
1) could be either
2) yes

rockbox already has a timestretch setting (which iiuc speeds up/slows down playback without affecting pitch) and a pitch setting

saratoga:
Rather then ask if rockbox has something, you can just check the manual:

http://download.rockbox.org/daily/manual/rockbox-iaudiox5/rockbox-buildch4.html#x7-490004.3.3

(yes we have pitch adjustment)

clumsymoe:

--- Quote from: saratoga on October 24, 2010, 11:46:39 PM ---Rather then ask if rockbox has something, you can just check the manual:

http://download.rockbox.org/daily/manual/rockbox-iaudiox5/rockbox-buildch4.html#x7-490004.3.3

(yes we have pitch adjustment)

--- End quote ---

Ah, it was hiding. Thanks!

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