I researched the archives for messages dealing with the issue of off-speed WDW Forever files, namely from World of Motion and Horizons, and found THIS. But instead of replying to the old thread, I thought I'd start a new one.
I did some initial testing on trying to determine the percentage by which these files are off. I took a track each from WoM and Horizons and simply changed the sampling rate from 44.1 kHz (CD standard) to 48 kHz without maintaining the pitch, and the files sound more correct (from my memory of the WoM OA track and the Horizons attraction). However, I'm not certain that this is the correct adjustment, and I have no idea if anyone's figured it out. The next step would be a detailed comparison between my adjusted WoM tracks with the OA track and see how they match up.
If they match exactly, then my theory is that the WDW Forever source tracks for these files were sampled at 48 kHz, but when the files were dumped into the Forever system or when CDs were burned for the customer, the files were incorrectly converted to 44.1 kHz for the audio CD. Instead of preserving their pitch during the resampling process, the sample rate was simply changed to 44.1 kHz without maintaining the pitch, which would "slow" down and lengthen the recordings. This would be akin to playing back an analog recording made at 15 inches/second at 13.8 inches/second (~92% of its original rate).
Does anyone have any real insight into this issue and/or know the exact percentage by which these files are off? Also, exactly which files are affected?
I think the 44.1-to-48 conversion is very close but I'd like to have more solid evidence before I go correcting the files with this method.
I did some initial testing on trying to determine the percentage by which these files are off. I took a track each from WoM and Horizons and simply changed the sampling rate from 44.1 kHz (CD standard) to 48 kHz without maintaining the pitch, and the files sound more correct (from my memory of the WoM OA track and the Horizons attraction). However, I'm not certain that this is the correct adjustment, and I have no idea if anyone's figured it out. The next step would be a detailed comparison between my adjusted WoM tracks with the OA track and see how they match up.
If they match exactly, then my theory is that the WDW Forever source tracks for these files were sampled at 48 kHz, but when the files were dumped into the Forever system or when CDs were burned for the customer, the files were incorrectly converted to 44.1 kHz for the audio CD. Instead of preserving their pitch during the resampling process, the sample rate was simply changed to 44.1 kHz without maintaining the pitch, which would "slow" down and lengthen the recordings. This would be akin to playing back an analog recording made at 15 inches/second at 13.8 inches/second (~92% of its original rate).
Does anyone have any real insight into this issue and/or know the exact percentage by which these files are off? Also, exactly which files are affected?
I think the 44.1-to-48 conversion is very close but I'd like to have more solid evidence before I go correcting the files with this method.