Re: [Discuss-gnuradio] Discuss-gnuradio aUaU FM receiver

[Garver, Paul W]

Pablo,

I've also experienced the same issue with VMWare Player and Ubuntu 12.04 LTS 
x86_64 on a quad core i7 with a USRP N210.  I've also tried Linux KVM to no 
avail.  I ended up creating a USB 3.0 flash drive for my SDR development 
environment which had no issues.  However, if you are interested in other 
applications running in a VM, Linux KVM could be an option for ethernet-based 
USRPs.

PWG

Date: Fri, 16 May 2014 16:01:24 -0700
From: Ben Hilburn <address@hidden>
To: Mike Harpe <address@hidden>
Cc: GNURadio Discussion List <address@hidden>
Subject: Re: [Discuss-gnuradio] aUaU FM receiver
Message-ID:
        <address@hidden>
Content-Type: text/plain; charset="utf-8"

Hi Pablo -

Have you tried tuning the audio rate a bit? When you see the 'aU's, do you
also hear distortion in the audio?

Cheers,
Ben


On Fri, May 16, 2014 at 8:10 AM, Mike Harpe <address@hidden> wrote:

> I was unable to get GRC to perform acceptably under VMWare on a very up to
> date system. The USB support is very slow.
>
> Mike Harpe, N4PLE
> Sellersburg, IN USA
>
>
> On Fri, May 16, 2014 at 11:08 AM, Marcus D. Leech <address@hidden>wrote:
>
>>  On 05/16/2014 10:59 AM, Pablo Fern?ndez Alonso wrote:
>>
>>  Hi,
>>
>>
>>
>> I built a FM receiver working with a LiveUSB and a USRPB100 device. It
>> worked fine, but when I installed Ubuntu and GNURadio in a virtual machine,
>> the audio is distorted. The console types ?aU? letters. But I generate a
>> wav file and the quality is good, the problem is with the audio sink.
>>
>>
>>
>> Regards,
>>
>>
>>
>> Pablo.
>>
>>
>> _______________________________________________
>> Discuss-gnuradio mailing 
>> address@hidden://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>>
>>  USB and Audio performance in VMs is highly variable and unpredictable.
>> Sometimes it's fine, sometimes it's really poor.
>>
>>
>>
>> --
>> Marcus Leech
>> Principal Investigator
>> Shirleys Bay Radio Astronomy Consortiumhttp://www.sbrac.org