
By fdodds
Fri Aug 08, 2014 10:44 am
i've never used any vintage mpc, my only experience is on friends's mpc 1000/500 and i have a ren now but that's different. i was just going by the test stuff posted earlier 


Chillin wrote:Swing in a real drum world it's considered an off beat note. Swing in a virtual drum world is an event, measured by shift in percentages off from the grid where the original note hits.
Yeah, they are the same thing as each other.
fdodds wrote:there's nothing conflicting about what everyone's talking about here... swing calculations would stay the same model to model, but sequencer accuracy was worse on the mpc - 60 with larger possible discrepancies between the perfect as written rhythm and the actual execution of those sequences... so we have a machine that has swing that feels different, in reality it's probably just always slightly losing sync and then catching back up due to early design, as design, software and hardware improves the mpc's get tighter and start actually playing back sequences perfect to the grid, and now i guess swing doesn't feel as loose as it did because it's actually being executed perfectly, so you'll have to nudge events to create that same looseness
SimonInAustralia wrote:Looks like a short bus?
SimonInAustralia wrote:What are those tests showing exactly in each one, can you give a little more of a detailed description?

THE ADVERSARY wrote:It's not the same on various MPCs, not sure where this assumption comes from.

Bus wrote:Performed the test below using the MPC Software 1.6 Sequencer:
http://www.innerclocksystems.com/New%20 ... 0Midi.html
SimonInAustralia wrote:THE ADVERSARY wrote:It's not the same on various MPCs, not sure where this assumption comes from.
So the swing calculation moves the events to different sequencer locations, on different MPC models, when using exactly the same swing settings?
SimonInAustralia wrote:Bus wrote:Performed the test below using the MPC Software 1.6 Sequencer:
http://www.innerclocksystems.com/New%20 ... 0Midi.html
I was wondering more about exactly what was going on in each of your tests, you have three different results.
First one looks like maybe MPC Software internal sequencer, with sequencer events triggering the internal MPC Software sample engine. Is that what you did, and how did you record the output to test it?
What are the other two tests doing?
"Litmus Test - def: any kind of indicator used to classify something either favourably or unfavourably"
Many hardware sequencers and drum machines generate Midi Notes.
In this variation of the Original Litmus timing test we measure continuous outgoing 16th Note Midi Event tempo stability.
At a tempo of 120 BPM there should be exactly 6000 samples @ 48kHz between any two consecutive 16th Midi Note events.
For these tests we use only a single track of Midi Note On events only. No Control, Sysex, Aftertouch, Pressure, MTC or Midi Clock messages are present.

Chillin wrote:I don't think that visibly/ physically we will see any differences of these events. They probably will hit the same locations, when being moved in the same percentages. Yet, many people claim to experience a difference. And that is what makes it so odd, because theoretically there is/ or should no difference.

SimonInAustralia wrote:Chillin wrote:I don't think that visibly/ physically we will see any differences of these events. They probably will hit the same locations, when being moved in the same percentages. Yet, many people claim to experience a difference. And that is what makes it so odd, because theoretically there is/ or should no difference.
'If' the swing calculation moves the events to the same locations on difference MPC models, then the difference would be in the sequencer timing between models.
Where each MPC model moves events to with their swing calculations doesn't seem to have been thoroughly tested and compared, as yet.
He seems to suggest that there is a difference between where events are moved to by swing in the different MPC models.
I am wondering what he is basing this on, maybe he has tested and compared it?
JBM wrote:
I like his simplified approach to Swing on MPC 60.
I don't use Swing or Shift timing(earlier or later)
How often do you get a funky swing to your beats using this feature?
What songs, beats, or instrumentals should I reference to get a better understanding of why this is so important to use with the MPC?
Personally it's just easier for me to use time correction off lay down my groove and use step edit adjust the placement of the sound where it sounds good to me.
@chillin In the Comments TheRealSonDu mentions he's part of the MPC Ren beta testing so if you are truly on the hunt for getting the MPC4000 real time swing feature into MPC Ren Os software. He or Sounds for samplers maybe able to help you get this accomplished considering they both have experience and invested time in Swing features on previous MPCs.
I know beta testers are just testers and are told what to test. It's appears that some beta testers are slowly earning the trust of Akai to take in recommendation for improving the OS. Good Luck
[code lang="cpp"]
void VoiceController::UpdateArpeggiatorParameters(const Patch& patch) {
tempo_ = patch.arp_tempo;
pattern_ = ResourcesManager::Lookup(
lut_res_arpeggiator_patterns, patch.arp_pattern >> 2);
mode_ = patch.arp_pattern & 0x03;
direction_ = mode_ == ARPEGGIO_DIRECTION_DOWN ? -1 : 1;
octaves_ = patch.arp_octave;
pattern_size_ = patch.pattern_size;
step_duration_[0] = (kSampleRate * 60L / 4) / static_cast(
tempo_ > 9;
step_duration_[0] += swing;
step_duration_[1] -= swing;
}

Chillin wrote:Think there's a difference in the versions of the MPC? Here's a note from one of the experts:
http://www.mpc2000xl.com/mpc_timing.htm
...
All MPCs are solid 96ppqn MIDI sequencers (as tight as MIDI can be, which is not that much anyway) with a absolutely tight internal drum sequencer with zero delay between multiple simultaneous instruments.
jeremiah wrote:...in trouble.
It is my heart - of the studio - my Akai MPC 3000LE V3.11
I own this beauty for 10+y.
I found out that the outputs behave very strange.
Scenario:
I put the same sound on 8 different pads, and play out on Outputs 1-8
record 8 straight tracks 1-2-3-4, straight Q
Audiointerface In (Lynx) 1-8 is connected to all MPC Outputs 1-8.
Normally each sound should be played out at the same position.
But not mine.
Output 1 seems to be on the grid, but then 2-8 seem to be late and later.
Output 2 is 70samples late
Output 3 is 138s late
Output 4 is 213s late and so on
Output 8 is 493s late
looks like every single output sends about 70samples later than the previous.
(On top of that-Output 7 delivers a distorted snd.)
I did a lil research, but could not find anything.
Not sure if it is a hardware (Outputboard) problem as "the delay" occurs quite constantly.

Chillin wrote:If you need a beat to explain the time signatures of swing, you best go with "Funky Drummer".