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Music in films - sped up?


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Old 24-12-2005, 21:18
dslrocks
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After seeing Billy Elliott for the umpteenth time the other day and hearing some of the backing music used in it and owning copies of the original songs, I've always wondered why they play around with the music in films by bending its pitch or using some other sort of effect on it to make it sound slightly faster.

This has always puzzled me. Can anyone enlighten me as to why they do it?
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Old 24-12-2005, 21:25
mromega
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Two reasons as far as I can see,

1 - For pacing. In a movie you don't want to let it go too slow (unless it's that type of film)

2 - You were probably watching it on TV, in which case the whole film was sped up.

From Wikipedia - (http://en.wikipedia.org/wiki/PAL)

Cinema films are typically recorded at 24 frames per second; when played back at PAL's standard of 25 frames per second, films therefore typically run 4% faster[1]. Unlike NTSC's telecine system, this is usually un-noticeable in practice (except that the soundtrack is slightly higher in pitch), although as a consequence films shown on video equipment in PAL countries run for 4% less time than their NTSC brothers, despite being otherwise identical.
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Old 24-12-2005, 22:24
James2001
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The 4% speedup is certinally the reason. Time compression is sometimes used so the pitch isn't increased, but is rare.
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