Post your questions, opinions and reviews of the MPC1000. This forum is for discussion of the OFFICIAL Akai OS (2.1). If you wish to discuss the JJ OS, please use the dedicated JJ OS forum
By MATT_MEDEIROS Sat Jun 11, 2005 8:26 pm
ive noticed using 16 levels with bass, i'll more often than not find that it finds a way to screetch. ive trimmed the sample nice, but still no luck, add envelopes, no luck.

im not talking about the screetching when samples overlap themselves, i turned them to mono not poly.

By Mr. Mind Sun Jun 12, 2005 9:13 pm
make sure that your loop point is on a zero crossing. otherwise a small clip will occur. if you use your 1k to edit samples, go into trim mode, then go into fine (the window button) zoom all the way in and switch to log mode instead of linear mode. find a zero crossing and use that as your loop point. does that help?
User avatar

By Penfold Sun Jun 12, 2005 10:48 pm
Mr Mind your spot on!!! use LOG and find a pefect loop!
User avatar

By samuraisam Mon Jun 13, 2005 12:04 am
Mr. Mind wrote:make sure that your loop point is on a zero crossing. otherwise a small clip will occur. if you use your 1k to edit samples, go into trim mode, then go into fine (the window button) zoom all the way in and switch to log mode instead of linear mode. find a zero crossing and use that as your loop point. does that help?


zero crossing=???

im guessing its the part where the wave of sound is like

\
\
\
\
------------------------
\
\
\
\

and you should cut it between those waves?

PS: my leet ass ascii drawing skills pwn j00z

By Mr. Mind Mon Jun 13, 2005 12:17 am
yeah, the MPC doesn't deal with decibel levels like a normal audio interface does, it deals in sample numbers. this is unfortunate and ends up snagging a lot of people along the way. the only way to find a zero crossing is visually by zooming all the way in. its where the waveform crosses the x axis. all sounds are comprised, ultimately, from waves. sounds, are just combinations of different kinds of waves at different frequencies. heres a picture of a wave.
Image

if you dont want your sound to click when you loop it, make sure you put the loop point at a zero crossing in the horizontal axis. this is a must-know. hope that helps.

also, if the end point is on its way down towards the zero crossing, you want the loop point to be on its way down in a natural looking direction so that the waveform looks like it would if it hadn't been chopped. same goes for up direction.