Audacity 2.2.1 Variable Latency Problem

Audacity 3 Help Forum GNU/Linux
1

Hi all I am tring to record some track , but i am experiencing some variabile latency problems

here is my setup

Audacity 2.2.1

audio device : Focusrite Scarlet2i2 USB

System Ubuntu 18.04 (bionic)
6Gb Of ram

product: Intel(R) Core™ i5-2300 CPU @ 2.80GHz

width: 64 bits
4.15.0-91-lowlatency (#92-Ubuntu SMP PREEMPT Fri Feb 28 12:15:04 UTC 2020)

I Use the Focusrite USB as recording and playback device , i performed the latency test

and adjusted latency settings with the folowing parameters

buffer 100ms
Latency compensation -167 ms

I am tring to record some bass/guitar tracks in a 44mhz 32bit float project.

The problem arise when i try to record long riffs ( >16 seconds)

Thanks for patience and support

2

I assume that you mean “44.1 kHz”?


What’s the problem?

3

Hi Steve the problem is when i try to record long tracks ( > 8/10 seconds) they are out of time with other tracks .

4

and adjusted latency settings with the folowing parameters

How did you do that? By what method?

Koz

5

Are the tracks gradually drifting out of sync, or are they out of sync by a consistent amount throughout the track?
How much out time are we looking at? A couple of milliseconds? Several seconds?

What settings are you using in the Device Toolbar? (Device Toolbar - Audacity Manual)

6

Hi all for my settings for my device toolbar ( in the attache png)

Koz I adjusted latecy settings following the latecy test tutorial

BR
ToolBarAudacity.png

7

Sorry i forgot to answer

“Are the tracks gradually drifting out of sync, or are they out of sync by a consistent amount throughout the track?
How much out time are we looking at? A couple of milliseconds? Several seconds?”

The tracks are gradually drifting out of sync if a record small pieces the are in time , but longer riffs,solo or part start in time but end out of time (it’s a matter of milliseconds not seconds but the track i compromized)


BR

8

What settings are you using in the “Device Toolbar”? (https://manual.audacityteam.org/man/device_toolbar.html)

Have you tried recording at 48000 Hz instead of 44100? If not, try that (you will need to rerun the latency compensation setup).

Note that any changes to the recording setup can change the amount of latency, for example, switching between mono and stereo, or changing the sample rate.

9

What settings are you using in the “Device Toolbar”? (> Device Toolbar - Audacity Manual> )

Have you tried recording at 48000 Hz instead of 44100? If not, try that (you will need to rerun the latency compensation setup).

Note that any changes to the recording setup can change the amount of latency, for example, switching between mono and stereo, or changing the sample rate.

Hi all my toolbar settings are in the previous post, i tried recording at 48000 hz ( rerun the latency compensation setup also) but no effect
why i should try to record at 48000 ?

thanks

BR

10

Because most USB audio chips have a “native” sample rate of 48 kHz.

Other than the latency drift, is the sound quality OK, or do you experience crackles and pops?

11

Hi steve , the quality of sound is good and i don 't have cracks and pops , i also tried to record using the embedded audio sound card of my pc as playback device (while recording with the focusrite 2i2 but the problem is the same after a while if the tracks segment is longer than about 16 seconds start going out of time

12

What settings are you using in the “Device Toolbar”? (https://manual.audacityteam.org/man/device_toolbar.html)