ULLI Sample Corrections

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dawman
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ULLI Sample Corrections

Post by dawman »

I need someone to explain to me what these parameters are for, and what effect they have on the sound quality, etc.

I can't get a hold of Brotha' Man MCCY, but I assume these correlate to the 4 stereo pairs, and their individual parameters. The default settings are all of a negative value, and in the upper right corner there's a drop down menu w/ options from 4 to 25msec. I assume 4msec. is optimal, but the lower left corrections still escape me.

Thanks In Advance.
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hifiboom
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Re: ULLI Sample Corrections

Post by hifiboom »

bigger delays are not dsp based but host based, that means whenever you use a delay in scope that is host based the data goes out from scope to memory and then back into scope.
so it adds double time latency.
so the delay have some sort of additional delay. So if a delay is set to 60ms and ulli is 2ms you may have a delay length of 64ms at an ulli setting at 2ms.

this additional delay may vary with ulli but is also affected by the sampling rate: lets say you have a buffer of 64sampes in samples.

at a sampling rate of 44100 samples per second this is a different time delay as with 96000 samples per second or 48000k.

the additonal ulli latency is no problem with a delay as you want the sound to be delayed.
But it can be a problem with calculation. When you wanna create synced delay ( 1/4,1/8 etc.), you need a an internal subtracting algorithm for the correct delay time.

thats it roughly.

the input areas here are the sample correction values .... once you found a correction value that makes 1/4 be exactly 1/4 than all other settings 1/8 should be fine too at your ulli setting and sample rate.
dawman
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Re: ULLI Sample Corrections

Post by dawman »

I got the idea now, Thanks HiFiBoom.

So the negative values in the lower left are to compensate the timing then. I won't used synced BPM's, and as you said they are time based effects anyway.

My ears didn't detect any differences, but that's what made me curious to their use.

If I decide to add insert effects using filters / EQ's would this correction of samples be necessary?


Ankyu.
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