Buffer number at ESI U46 MK II v3.0 driver

[christiankoopmann]

In terms of the buffernumber being high, in your opinion, would it significantly affect your ability to DJ well using Mixvibes, or is the impact minimal?

I'M not shure if I understand you correct but I have set it at all my systems to 4. When my old backup system is making drop outs at the music I set the buffernumber higher to 6 or 8 depends on the situation. It helps but you have to stop your audiodevice otherwise it will not be set to the new buffernumber. (the buffernumber is set at creating the audio manager so only at startup the device it can be set!)

To the higher or smaler number I didn't realised a difference while playing with vinyl or timecode control. How it effects I can't say currently. I will check this at the weekend if there is a difference at 4 or 8 as the buffernumber.
I also can't say how the driver from ESI or MixVibes is written so I can only say what I know from developing drivers for linux and windows.

But generally I can say that a higher buffernumber will decrease the drop outs at lower systems and high used systems (if the CPU and disk usage is very high while playing with MixVibes software).

regards
Christian

[rhopkins]

Scientific fun facts


Any System-Latency under 9ms (from you touching the vinyl to sound in your headphones) is excellent, cause your brain doesn´t recognise this short time-spans consciously. neither does mine btw

Up to 15ms is perceived sub-conciously, and you adopt within minutes.
(your brain tells your hands go a bit ahead,
Like when the monitors are a bit further away, and you hear the delay between PA and headphones)

Depending on what paper you read, 15-20ms is when you start to really feel it, and you just say "F*** it´s laggy as (word censored 2)!"

Very scientific!

But that's latency, I kind of get that. What about buffernumber? I'm not obsessed, honest, just interested!

[rhopkins]

In terms of the buffernumber being high, in your opinion, would it significantly affect your ability to DJ well using Mixvibes, or is the impact minimal?

I'M not shure if I understand you correct but I have set it at all my systems to 4. When my old backup system is making drop outs at the music I set the buffernumber higher to 6 or 8 depends on the situation. It helps but you have to stop your audiodevice otherwise it will not be set to the new buffernumber. (the buffernumber is set at creating the audio manager so only at startup the device it can be set!)

To the higher or smaler number I didn't realised a difference while playing with vinyl or timecode control. How it effects I can't say currently. I will check this at the weekend if there is a difference at 4 or 8 as the buffernumber.
I also can't say how the driver from ESI or MixVibes is written so I can only say what I know from developing drivers for linux and windows.

But generally I can say that a higher buffernumber will decrease the drop outs at lower systems and high used systems (if the CPU and disk usage is very high while playing with MixVibes software).

regards
Christian

Excellent, I will have a quick play around tonight and see if 1) My laptop (with it's dreaded i3 core!) can cope with a lower buffernumber and 2) if I can tell a difference.

[Hannes]

Scientific fun facts


Any System-Latency under 9ms (from you touching the vinyl to sound in your headphones) is excellent, cause your brain doesn´t recognise this short time-spans consciously. neither does mine btw

Up to 15ms is perceived sub-conciously, and you adopt within minutes.
(your brain tells your hands go a bit ahead,
Like when the monitors are a bit further away, and you hear the delay between PA and headphones)

Depending on what paper you read, 15-20ms is when you start to really feel it, and you just say "F*** it´s laggy as (word censored 2)!"

Very scientific!

But that's latency, I kind of get that. What about buffernumber? I'm not obsessed, honest, just interested!

Buffernumber = part of your overall latency!

Overall-latency = Usb-Buffer (Buffernumber) + Samplebuffer + AI-latency (+ mixer-latency, if it´s digital).

Using the U46, 2ms probably will make a huge difference.

But I still wonder why you cant get lower with the sample-buffer....

[rhopkins]

Scientific fun facts


Any System-Latency under 9ms (from you touching the vinyl to sound in your headphones) is excellent, cause your brain doesn´t recognise this short time-spans consciously. neither does mine btw

Up to 15ms is perceived sub-conciously, and you adopt within minutes.
(your brain tells your hands go a bit ahead,
Like when the monitors are a bit further away, and you hear the delay between PA and headphones)

Depending on what paper you read, 15-20ms is when you start to really feel it, and you just say "F*** it´s laggy as (word censored 2)!"

Very scientific!

But that's latency, I kind of get that. What about buffernumber? I'm not obsessed, honest, just interested!

Buffernumber = part of your overall latency!

Overall-latency = Usb-Buffer (Buffernumber) + Samplebuffer + AI-latency (+ mixer-latency, if it´s digital).

Using the U46, 2ms probably will make a huge difference.

But I still wonder why you cant get lower with the sample-buffer....

I've come back to read this for ideas to improve my situation and wondered, where you said "Using the U46, 2ms probably will make a huge difference." I wondered, was that a mis-type or did you mean that?

Second, "But I still wonder why you cant get lower with the sample-buffer...." - were you referring to BufferNumber or sample rate here? And on that subject, how much difference is there between 44000khz and 48000khz.

Leave the "4000 khz" answers please

[Hannes]

Hi,

1) I meant 2ms will probably make a huge difference in how direct the timecode feels.

2) I was referring to the samplebuffer, you wrote that you played at 144, from my experience 96 or 64 shouldn't be a issue on a 2nd Gen iCore.

3) The difference between 44,1 and 48KHz is not that big latency-wise,
but on most AIs there´s a significantly better sound.

But you must understand that latency and samplerate are directly proportional, so if you´r using 88,2Khz our overall latency will immediately be halfed if your PC manages to keep the sample buffer.
This also applies to hardware-latency (the AI itself)

(Samplerate is how often the buffer is read, so if you double it, the latency is halfed, as the double amount of samples is read in the same time, or the same amount in half the time )

[UncleVibes]

You must be teacher in real life

[Hannes]

no,no. i´m on the other side of the room.

[rhopkins]

It shouldn't be an issue. But Windows seems to make it one.

Has there been anyone that has said they've run into problems with the UMix-Pro, Windows and icores?