- ASL>DStar noise problem
Re: ASL>DStar noise problem
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I ran into this problem a while back. Peter, you have to modify the DummyRepeaterThread.cpp file. The division by 3 drops the audio level pretty low. So, I modified it to multiple by 1.5 instead. If increase it to 2.0 or higher, you’ll start getting bad clipping, so I just left it @ 1.5. It was late in the middle of the night when I looked @ this & it’s probably not the right way to correct the problem, but it has been working here. 😉 Here’s the change I made:
[root@k4sqi-allstar DummyRepeater]# diff DummyRepeaterThread.cpp.USRP.orig DummyRepeaterThread.cpp
< m_usrpPacket.audio[i] = (short)((audio[i*6]) * 32768.0F / 3.0F);
> m_usrpPacket.audio[i] = (short)((audio[i*6]) * 32768.0F * 1.5F);
73 de K4SQI!
From: G7RPG - Peter Kendall
Sent: Monday, March 19, 2018 12:26 PM
Subject: Re: [DVSwitch] ASL>DStar noise problem
Do you know if it is possible to manipulate the audio levels like you can with analog_bridge, DSTAR>ASL is quite low.
On 15/03/18 13:12, G7RPG - Peter Kendall wrote:
That fixed it, thanks Steve.
Its running under ESX and added an 'HD audio' device.
On 15/03/18 12:56, Steve N4IRS wrote:
OK, I may have to go back and find that message and edit it. DO you have a real sound device available in those pulldowns? If so select it. If not, can you add a simple sound device like a CM1xx and select it?
On 3/15/2018 8:53 AM, G7RPG - Peter Kendall wrote:
Yes, followed your instructions from a previous post.
On 15/03/18 12:47, Steve N4IRS wrote:
I'm pulling this off the top of my head. Do you have the sound device in Dummy Repeater using snd-dummy?
On 3/15/2018 7:59 AM, G7RPG - Peter Kendall wrote:
I've got my Allstar node connected to DStar (DCS005E) using the dvswitch
modified version of dummy repeater.
All seems to be working well apart from a digital burst of noise that is
heard on DStar at the end of a transmission coming from ASL.
I've recorded an example here: https://www.youtube.com/watch?v=APkGjoLxKPk
I wonder if anyone has any suggestions or has come across this before?
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