[arm-allstar] simpleusb-tune

[Neil k8it]

I found the following method to adjusst the the audio works the best

1 set the TXA output to 5khz peak maximum by playing the status *70
IGNORE THE RX INPUT LEVEL UNTIL AFTER THIS IS DONE. 

This sets the official voice  "ALLISON" TO  BE YOUR LOUDEST OUTPUT

2  now adjust the receiver input 
I  try to use a 1, 3, and 
5 khz deviation signals
Thanks
73 Neil Sablatzky  K8IT
Allstar Node 41838 KITLINK
Allstar Node 42087 KITLINK HUB
IRLP Node exp0068
Echolink K8IT-L
WIRES-X K8IT 11479 Room 21479


From: Doug Crompton via arm-allstar 
Sent: Tuesday, June 07, 2016 2:35 AM
To: ARM Allstar 
Cc: Doug Crompton 
Subject: Re: [arm-allstar] simpleusb-tune


I find that voice levels are highly dependent on the person speaking, the rig they are using, the node radio,  and probably a dozen other factors. Generally setting the audio so you see peaks just above 5 khz should be OK. Some radios have better limiting than othesr and the peaks are well defined. On some you can see peaks go well above what you would call max but the average is much lower. One thing you don't want to do is have it set too high. Digital distortion is very annoying. I often use iaxrpt's level meter for adjusting or looking at multiple users for comparison. If you are filling the iaxrpt bar graph to 9o-95% without hitting the edge you are good.

I often find that one node that shows 80% peaks actually sounds louder than one that shows 95% peaks. Audio characteristics and equalization can play games with your ears! I don't think setting using DTMF is always a good idea because DTMF levels can be quite different than voice through the microphone. 

Some radios like the Chinese variety handhelds have greatly varying audio levels depending on how far you are from the mic. You almost have to eat the mic on some of them to have a decent level of audio and then you have breath noise.

If you use a wide range of radios that you use to talk to your node it is best to check them all. You may have to come up with an average setting so that the loudest radio does not distort. 

Talk into the radios the way you would when you are not thinking. If you adjust it talking right into the mic and then when you aren't thinking you usually talk 2 inches away the level is not going to be right.

In the future we hope to have audio processing capability added to the code to help fix some of these problems. 

73 Doug
WA3DSP
http://www.crompton.com/hamradio



> To: arm-allstar at hamvoip.org
> Date: Mon, 6 Jun 2016 20:36:18 -0700
> Subject: [arm-allstar] simpleusb-tune
> From: arm-allstar at hamvoip.org
> CC: k6ecm1 at gmail.com
> 
> 
> What should I see as I change input audio levels? Is there a recommended FM
> deviation? Is this the 3KHz and 5KHz? When I get it right, what should the
> display indicate?
> 
> Thanks,
> Bob
> k6ecm
> 73
> 
> 1) Select USB device
> 2) Set Rx Voice Level (using display)
> 3) Set Transmit A Level
> .
> .
> .
> 
> Please enter your selection now: 2
> RX VOICE DISPLAY:
> v -- 3KHz v -- 5KHz
> 
> Current setting on Rx Channel is 0
> Enter new value (0-999, or CR for none): 500
> Changed setting on RX Channel to 500
> RX VOICE DISPLAY:
> v -- 3KHz v -- 5KHz
> 
> _______________________________________________
> 
> arm-allstar mailing list
> arm-allstar at hamvoip.org
> http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> 
> Visit the BBB and RPi2 web page - http://hamvoip.org
> 



--------------------------------------------------------------------------------


_______________________________________________

arm-allstar mailing list
arm-allstar at hamvoip.org
http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar

Visit the BBB and RPi2 web page - http://hamvoip.org 


--------------------------------------------------------------------------------


No virus found in this message.
Checked by AVG - www.avg.com
Version: 2016.0.7639 / Virus Database: 4598/12373 - Release Date: 06/06/16
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.hamvoip.org/pipermail/arm-allstar/attachments/20160607/15f78568/attachment.html>