[App_rpt-users] Audio distortion using usbradio

[Kevin Custer]

I have seen the subject line mentioned many times, and have decided to 
comment on it.

Not all platforms had distortion when usbradio was being used. The 
'other' distribution had a patch applied to it nearly three years ago.  
Recently, the ACID distribution had the fix applied to it.  This will 
resolve any audio distortion that may have been present when using 
usbradio.  The patch is not applied automatically.  In other words, any 
new installations will automatically be running the new, fixed version, 
and any old installations will not be effected unless you choose to 
re-do the tuning.

Thanks go out to Jim - WB6NIL for patching the code where this problem 
was concerned.

While there may be instances where simpleusb is desired, especially on 
horsepower challenged platforms, there are no longer any distortion 
issues that would be circumvented by using simpleusb.  As such, usbradio 
is fine as the default as it is simpler to use and works just fine for 
most applications of this technology.

Kevin  - W3KKC




On 1/14/2015 2:55 PM, Doug Crompton wrote:
> That is true but I think he is asking about usbradio. On the BBB I 
> highly recommend simpleusb and that is the default setup mode. In 
> general I would recommend simpleusb for Allstar on all platforms 
> unless there is something you absolutely need on usbradio. The dsp 
> code can and does often cause audio distortion depending on what 
> system you are running it on. I have often seen the problem on PC's as 
> well as small board computers. Unfortunately the default for the Acid 
> release is usbradio and I have helped quite a few Acid users switch to 
> simpleusb with greatly improved audio. So until the usbradio code gets 
> updated I would stick with simpleusb.
>
> *73 Doug
> WA3DSP
> http://www.crompton.com/hamradio*

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