Exchange tips and tricks for the Akai MPC4000
By Altopiano Thu Jun 17, 2004 4:14 pm
i got a question which is bothereing me since a few days and i don't find any clearance! its about the adsr (edit page 1 - bottom right)

when learning the 4k i withthrought a lot of knowledge from my synth experience (m using virus) which was quit helpful - but sometimes .... dunno it leads me in wrong directions!

i'll try to explain my quest on an example!

on my synth module i program 1. a bd sound and 2. a string sound! now if i look at its adsr it has completely different shapes!

on my 4k i sample a 1. bd and 2. a string sound and assign them to a new program (drumprogram) and too my surprise the adsr of both is the same: it always gives me an a=1, d=50, s=100, d=15!

the problem is not the sounds on the 4k! they sound exactly the same as i sampled them! but the workin of the 4k adsr must be different then the one from a subtractive synth imo!

1. is this normal/correct or am i doin something wrong?
2. how does the 4k come from a sample to an adsr in the program? are they preset?

if anyone could exokaub ít to me would be greatly appreciated!

cheers

alto

By bleepfreak Thu Jun 17, 2004 4:28 pm
When you sample the audio from the virus into the MPC you are measuring the amplitude of the audiosignal on the input of the 4000.
Therefor the amplitude ramp /\_ caused by the amp envelope in the virus is being recorded into the sample. That is why you do not need another envelope to get the same effect, you see? The amplitude curve is already recorded into the sample now you only need to play that sample right from the start (i.e. attack 1) to listen back what you have just recorded.

Hope I am clear enough.

By Altopiano Thu Jun 17, 2004 6:19 pm
thanx bleepfreak for your quick reply! ... its gettin clearer, i am quit there now!

one more question: am i right if i say that basically the adsr for a synth module is to form/create a sound whilst the adsr for a sample is for editing/changing/transforming a given piece of audio only?

and: do you also have an initial setting in a newly created prog of a=1, d=50, s=100, r=15?

By glide Thu Jun 17, 2004 11:38 pm
the virus is dsp and the mpc is dsp... the virus uses oscilliators to create a sound the mpc uses audio to create a sound.. the enevelopes in both work the same..

and Yo! bleepfreak dig the "/\_" graphics :P

By Altopiano Fri Jun 18, 2004 12:15 am
bleep, glide - thanx to both of you! ... another doubt/prob solved! :lol: