Yes it is an exact clone. 
On 10 Jul 2020, 21:09 +0300, Darryl Lewis <darryl.lewis@unsw.edu.au>, wrote:

 

Is your virtual machine exactly the same (OS version) as your physical PC?

It might be a driver issue with different versions.

 

 

From: Maxim Doumkine <maxd@coregears.com>
Reply to: "sox-users@lists.sourceforge.net" <sox-users@lists.sourceforge.net>
Date: Saturday, 11 July 2020 at 3:58 am
To: "sox-users@lists.sourceforge.net" <sox-users@lists.sourceforge.net>
Subject: [SoX-users] Loopback latency issue

 

Hello everyone, 

We are trying to build a Sox based real-time sound altering app, and we’ve got everything working on our LUbuntu 16.04 stations except for an issue w latency. 

When we test it on actual hardware, we are having a latency of about 2 seconds, when we test it on our virtual machine the latency is more like 250ms. 

sox -t pusleaudio default -t pulseaudio null pitch n
Whenever we add the null loopback or aloop, we experience a delay. No amount of config tinkering seems to affect this latency on an actual workstation. 

We’d appreciate an advice or any input but would be equally glad to hire a consultant for a fee to get this resolved. 

Thank you. 

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