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  latency suddenly went from 5 to 7.5
Posted by: maxinegerb - 09-12-2020, 03:07 AM - Forum: Help with Live Jamming Sessions - Replies (27)

I've been using jamkazam on Windows 10 with my focusrite 2i2 with internal latency of 5ms, which has been great.

I didn't use it for a while, and today my latency is 7.5.

In the mean time, last week, I installed an update to Audacity and did some recording using the Focusrite. I wonder if that had an impact.

My sample rate is 48000 and my buffer size is 96 and my frame size is 1ms. I've tried resetting the buffer size to 48, and jamkazam keeps resetting it to 96 no matter what I do. I can't remember what my buffer size was before, but I *think* it was 48.

I really want to get my latency back to 5! Can anyone help?

Thanks.


  frame size is red
Posted by: Jonibbp - 09-12-2020, 01:14 AM - Forum: Help with Audio Gear - Replies (6)

What can I do to fix my frame size, which is red?  I'm new to jamkazam and having issues getting set up.  Thanks for any help.


  Expand number of possible participants
Posted by: hwalman - 09-11-2020, 08:25 PM - Forum: New Feature Requests - Replies (2)

HI. I am using  JamKazam for a choir of size 30 people. We are currently able to have between 10-15 connections concurrently with good results.

Is there a way to expand that number? What is causing the limitation for the number of participants?

We figured out that the total network bandwidth consumed by JK does increase in a linear fa$on as the number of connections are added. And that the total bandwidth being used must not exceed the network bandwidth of any of the participants (particularly the upstream bandwidth which is typically much smaller than downstream bandwidth). We have had success by using the feature to limit maximum outgoing music bitrate to 128 kbps. 

Is it possible to reduce the outgoing music bitrate even further? For example, could we send only one channel of music microphone music data out from each participant, instead of doubling that data into both left and right channels (assuming that is happening now)? Possibly that channel could be copied into both left and right channels on the receiving side instead of the sending side? 

Is it possible to add a higher compression audio codec also to reduce bitrate, hopefully without adding too extra much latency or CPU usage? (I know this might be asking a lot...)

It looks like our PC's are not hitting the maximum CPU % usage most of the time (it probably sits below 50% for most participants). I am not sure what else might be limiting the participant count.

Any improvement on this front would be great since all the larger choruses around the world are currently on hold due to the COVID crisis.

Thanks,
Hans


Question Axe Fx - III Hardware latency less than 10.3ms?
Posted by: ebenedito - 09-11-2020, 08:07 PM - Forum: Help with Audio Gear - Replies (2)

Hello. Good day. 

I am using a Fractal Axe-FX III to connect to JamKazam.  I am using Mac OS (Mojave).   I get a constant 10.3ms as hardware latency.   

I checked on some forums that you can play with the FxIII buffer frame size, but it doesn't matter what I set it to, I don't notice any difference with the amount of ms in latency.   

What concerns me is that if I plug in a very old audio interface that I have (pre 2003), I get the same 10.3ms as latency.   Wondering if anyone has used the Axe-FxIII (or any Fractal product) with JamKazam and what is the latency time you obtain?

Thanks in advance!


  payment
Posted by: burgvogt - 09-11-2020, 10:08 AM - Forum: Miscellaneous - Replies (8)

It is frustrating. Angry I find so many files I would like to buy but I cannot pay for files, neither through Paypal nor through Visa credit card though my card is valid and so is my paypal account.
Any suggestions?


  Couldn't Open Metronome - error message
Posted by: bonehead - 09-10-2020, 11:18 PM - Forum: Help with Live Jamming Sessions - Replies (1)

Just wondering if anyone has come across this issue and how they resolved it.  We tried restarting JK to no effect.  Below is the text of the window that pops up.


Couldn't open metronome

Background:
The metronome feature requires that every user's computer in the session must agree on the current time.

The Problem:
The computers of [my friend] have not successfully synchronized to the current time

Solution:
... restart the JK application.


  Session scheduling does not work for specific times
Posted by: Elb2000 - 09-10-2020, 10:03 PM - Forum: Help with Windows Client Problems - No Replies

I can not schedule a session for Tuesday 7 PM.  The date jumps to Wed.
Scheduling for Tuesday 6:30 works fine


  guest musician comes through computer, not headphones
Posted by: GR3 - 09-09-2020, 09:53 PM - Forum: Help with Windows Client Problems - Replies (2)

I've been trying to correct the fact that my guest musician's audio comes through the computer's internal speakers and not my headphones.  Haven't figured it out yet.  If anyone had a blinding flash of the obvious I would deeply appreciate it. Thanks!


Photo latency / loop back testing
Posted by: pcoulson - 09-09-2020, 09:51 PM - Forum: Help with Audio Gear - No Replies

Hi All-

I'm new here, so... Using Win 7 with ASIO4All v2 audio drivers
    Not clear on how to configure for the loopback test.

Any guidance is appreciated,
-Phil


  Distortion though PC Headphones
Posted by: fox5150 - 09-09-2020, 09:30 PM - Forum: Help with Audio Gear - Replies (9)

Hi Folks,

New user here. Setup Jamkazam (Windows) and am having problems with what I hear through either the speakers or headphones connected to my PC. My audio chain is:

Guitar >> Fractal Audio Axe-FX II >> PC over USB3

I'm using the FAS Audio ASIO driver for the input and am using my Creative Labs Z (WDM) driver for the output. There's no way to disable direct monitoring on the Axe-FX so I have no choice but to "monitor" using the PC soundcard. If I try and use the ASIO driver for the soundcard then Jamkazam reports that there's no device connected and it all gets a bit messy. My settings are as per the attached pic.

So... Jamkazam reports all as working. Bit of input/output jitter, but I'll figure that out soon enough. I start playing and 50% of the time, there's a truly horrid digital distortion sound coming out of the headphones/speakers. When I record using Jamkazam the recorded output is crystal clear, likewise if I connect to a friend's session, he can hear everything perfectly.

Does anyone have any ideas as to how I can remedy this situation please as I've tried everything I can think of.

Thanks,
Simon



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