At 12:55 PM 6/27/2006, Eric Wachsmann - FlexRadio wrote:
>Tom,
>
>I think what Bob is interested in is the DMA Buffer setting. To find
>this setting, pull up the Delta 44 Control Panel and click on the
>Hardware Settings Tab. The DMA Buffer size will be on the lower left.
>Make sure this is set t
The envelope algorithm in the switching code is still not really
correct (my miscalculation). The whole set of transition
parameters should be specified in seconds and not fractional
buffers. The fix is straightforward but won't be forthcoming for a
few days on account of travel.
I'm starting
I never experienced the pops that started this thread, but after the
latest fix (560) I see the same behavior as Tom. I have to keep the
audio buffers high (2048) when the Firebox latency is 6 ms. Anything
smaller results in audio dropouts. I also noticed that something has
effected the VAC audi
ly the TRX
>>>>>crossfade time, in samples -- being set? In the PowerSDR code I
>>>>>can trace it back through setup_switching() to setup() but haven't
>>>>>been able to find the call to setup() :-)
>>>>>
>>>>>73
>>&g
Bob,
I downloaded 1.6.3 svn 560 and the pop is gone with the dma buffer set
to 2048, the audio buffer to 1024, and the dsp buffer to 2048 with the
sampling rate at 96000. When I set the dsp buffer to anything smaller
than 2048, the audio motorboats. However, if I set the audio buffer to
204
Please let me know if the code I checked in fixed the problem. Thanks
for the hint Frank.
Bob
Tom Thompson wrote:
> The X2 delay is certainly the key. My svn 537 that was working had the
> X2 delay set to zero. When I set it to a larger number the tone can be
> heard when switching from t
Dudley and others:
Turns out the Dell Latitudes both needed the speed step fix that Dell offers
on their web site:
R56673.EXE - Patches And Fixes: Microsoft SpeedStep Fix for WinXP, Patch,
Windows XP, English, Multi System, A00, Dated 4/2/2003. This patch is for
the following Dell Notebooks: Inspi
I also have both. I purchased my Firebox off ebay
from a seller that also included a prosumer quality
desk mic for the same price as the firebox alone. The
audio reports have been great and the 48V phantom runs
the mic fine. Given the addition of the mic ("valued
at $100 what ever that means) th
n the new release
>>>>>>that if I decrease the buffer size on the audio tab below 2048 the
>>>>>>audio flutters. If I decrease the sampling rate to 48000 the flutter
>>>>>>frequency halves. The only combination of sampling rate and buffer
>&
flutter on any buffer size below 2048 at either 96000 or 48000.
> >>>>
> >>>>On 1.6.2 svn 537, the audio never flutters, and I have to decrease
> >>>>the buffer to 256 at 48000 for the pop to occure. It will not pop at
> >>>>256 wi
ay - big audio pop.
>>>I use new driver for Delta 44 v.5052
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>>>SDR1k 1W + Home Made PA
>>>Pentium 4 D820(Dual) 2.8GHz, Delta44, WinXP Pro SP2
>>>
>>>
>>>
>>>
2048 suffers audio pop.
>>4. Big time X2 Delay - big audio pop.
>>I use new driver for Delta 44 v.5052
>>
>>
>
>
>
>>SDR1k 1W + Home Made PA
>>Pentium 4 D820(Dual) 2.8GHz, Delta44, WinXP Pro SP2
>>
>>
-- next part -
> Hi,All.
> My observations (svn 560)
> 1. Buffer Delta 44 - does not give change for audio pop.
>I continue to use 2048 for more smooth of the sound.
2. Buffer Audio - greater importance 2048 reduces time pop. Exactly so.
> 3. Buffe DSP - smaller importance completely avoids pop, 1024 and le
Hi,All.
My observations (svn 560)
1. Buffer Delta 44 - does not give change for audio pop.
I continue to use 2048 for more smooth of the sound.
2. Buffer Audio - greater importance 2048 сокрашает time pop. Exactly so.
3. Buffe DSP - smaller importance completely avoids pop, 1024 and less.
20
;>>>On 1.6.2 svn 537, the audio never flutters, and I have to decrease
>>>>the buffer to 256 at 48000 for the pop to occure. It will not pop at
>>>>256 with the sample rate at 96000.
>>>>
>>>>I hope this helps.
>>>>
>&g
is helps.
>>>
>>>73, Tom W0IVJ
>>>
>>>
>>>
>>>
>>>
>>
>>
>
>
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>FlexRadio mailing list
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>http://mail.flex-radio.biz/mailman/li
Bob and Eric,
I reduced the dma buffer size on the Delta 44 to 512 as suggested. This
fixed the flutter, but the pop is still there on all audio tab settings
except 2048 and 48000. None of this occurs on svn 537 even with the dma
buffer set to 2048.
Tom W0IVJ
Robert McGwier wrote:
> In t
Tom,
I think what Bob is interested in is the DMA Buffer setting. To find
this setting, pull up the Delta 44 Control Panel and click on the
Hardware Settings Tab. The DMA Buffer size will be on the lower left.
Make sure this is set to 512 (or lower if your system will handle it).
Eric Wachsman
In the task bar, on the bottom right, there is a little black
trapezoidal looking M for your M-Audio control panel. It should on the
task bar over by the clock. Double click on it. There is a DMA buffer
size setting there. If it is larger than 512, please decrease it to
512 and try this
Bob,
I am using the Delta 44 card with the buffer size on the audio tab set
to 2048. The sampling rate is 96000 and the manual latency is
unchecked. My dsp buffer is 2048. I found that on the new release that
if I decrease the buffer size on the audio tab below 2048 the audio
flutters. If
Yes, I have this too, as well as several others. I have reported it on bug
tracker, see my report there. It is true that if you increase the DMA buffer
(as set in the M Audio panel, this buffer is not accessable from within the
Flex Consol), it will help with the problem, but not eliminate it
altog
Tom:
I was able to reproduce this by having DMA buffers on my D44 too small,
audio buffers on my PowerSDR small. Could you please share with us your
settings for your sound card (latency, DMA settings dependent upon which
card you own) and your audio settings.
Bob
Tom Thompson wrote:
> On
On the new release of 1.6.2, I observe a loud pop when returning to
receive from transmit. If you click the mox button on and off, you can
hear (and actually see on the panadapter) this loud pop. This does not
happen on 1.6.2 svn 537. Does anyone else observe this?
73 Tom W0IVJ
_
h to talk button connection for the
HM_5. I click the MOX button twice, leave the mouse pointer over the MOX button
and then use the keyboard's space-bar as a push to talk.
Jerry, KD6ET 40M
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> I have a strange fault on my SDR, the frequency of received signals seems
> to be offset by about 57.8 KHz.
> For example a signal detected on my Yaesu FT1000 Rx is shown as 14.137460
> MHz but appears on the SDR at 14.079600 MHz
> This difference in frequency is substantially constant across the
> Eric Wachsmann - FlexRadio wrote:
>
[snip]
> All true.
>
> It is also true that I took a rather ordinary Celeron laptop and an
> Extigy to Belize last year and it worked very well under contest
> conditions (at the time, the Extigy was basically all we had). Of
> course, we were the pursued, w
and
always the same way round. ie FT1000 higher than the SDR.
I think the problem arose following a Microsoft update but I can't be sure.
Any ideas please
Cliff
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> My teenage son questions the suitability of any software-defined radio
> -- especially one depending on a computer running Windows -- as a
> reliable means of communications in emergencies. Any takers?
>
> If I take the plunge and buy an SDR-1000, I expect to install my Icom
> IC-706MkIIG in the
Heisenberg's "Principle of Uncertainty" at work here. What profiler
does not in itself change how the system runs.
On my PC it goes from roughly 20% to 10% utilization, and how
accurate is that? It would be interesting to see how much time the
software is spending waiting for audio packets to c
Mike,
I have both and there are several discussions on this in the Archives on
both the reflector and the Yahoo group. There are several reasons for
picking one over the other. They depend on operating preference (phone
vs. other), mobility, cost, and computer system resource usage. There
is no
Jim,
I haven't done any formal testing, but in my experience, the display
alone accounts for around 90% of the used ticks by the PowerSDR.exe
process. I think the last time I tested a profiler (none of which have
I been happy with), it said that the DSP was taking something like 0.2%
of the CPU l
Multiple profiles is not very difficult, it's not widely used but it
fairly easy.
Each user have their own profiles, but you can have more than one and
select at boot time which profile to load. In the device manager you
can control each device and what profile they work under, the same
thing
It's not quite like the Windows PC is controlling an elevator, a
failure would be catastrophic in that case.
There is always the re-boot off course, but if one wanted to cover
oneself for the worst possible situation, one would have as part of
the emergency kit a spare HD with an identical copy
It looks like there are lots of places to get a Presonus Firebox, some
cheaper than others, etcand of course eBay.
I am wondering if there are advantages of where to get one, i.e. firmware
version, what to look out for, etc. since I have seen a number of
discussions going on here for versio
Alan,
My opinion is that there are 2 things to keep in mind:
- Use a good quality computer (almost no problem nowadays) with
a good powersupply (my 12 volt with invertor to 220volts failed, the
charger starved)
- Dont use the computer for (to many) other applications. I installed
i-Tu
Sounds like your son is a Linux user :-)
Embedded systems with dedicated processing may indeed be "better"
than a common Windoze desktop, however, with some care and
optimization, XP is proven to be a suitable platform for the
invention and development of the next generation of Ham Radio
equip
My teenage son questions the suitability of any software-defined radio
-- especially one depending on a computer running Windows -- as a
reliable means of communications in emergencies. Any takers?
If I take the plunge and buy an SDR-1000, I expect to install my Icom
IC-706MkIIG in the car perm
Sony is good.
check out the VGN T350P or it's replacement. great video and it has
everything you will ever need including a cellular modem.
- Original Message -
From: "John L Merrill" <[EMAIL PROTECTED]>
To:
Sent: Tuesday, June 27, 2006 6:16 AM
Subject: Re: [Flexradio] Notebook compute
hi eric -
ok, i had to wait 'till field day was over, but, i have everything running
perfectly now. all the drivers had to be removed and reinstalled. the
griffin knob works great and so does the rest of the radio. what a great
radio it is too.
i would like to opine on the whole flex radio sys
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. No I'm going to start playing with SDR in the Tablet mode.
Thanks,
Ken - N8KJG
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Eric Wachsmann - FlexRadio wrote:
>Alan,
>
>A notebook 1GHz+ with the Extigy will work. However, it will not have
>the same dynamic range as our recommended cards provide. In short, the
>legacy cards (Extigy, MP3+, Santa Cruz, Audigy 2 ZS) will work in terms
>of being able to receive and transmi
That is my experience as well. I have had no failures whatsoever but I
cannot for the life of me figure out how to non-destructively open this
case to clean the dust out that keeps it hot and on high fan at all
times (consuming the battery quickly) so I never use it on battery at
all. If you
My HP/Compaq TC1100 Tablet PC has both a throttling CPU and a variable
speed fan. On battery, it runs at full speed (unless it's getting warm)
but the backlight dims. Runs at 1GHz normally, but on CPU bound tasks
(e.g. running NEC4) it slows down to around 300 MHz. It uses a Pentium M of
som
Eric Wachsmann - FlexRadio wrote:
>Ed,
>
>The bare minimum CPU speed is 800MHz according to our spec. If you want
>to be able to multitask and turn on all of the bells and whistles, I
>would recommend 2GHz+. This really is not an issue if you are buying a
>new machine today. You can buy the $29
Robert McGwier wrote:
> My 2.4 GHz Sony Vaio is solid and fast. I need to clean it out because
> the fan is always on high but it is solid. I am reluctant to give it up
> for one of these throttling monsters that you can't choke off from
> throttle. My Dell laptop which runs Linux, has the th
My 2.4 GHz Sony Vaio is solid and fast. I need to clean it out because
the fan is always on high but it is solid. I am reluctant to give it up
for one of these throttling monsters that you can't choke off from
throttle. My Dell laptop which runs Linux, has the throttle problem.
It is great
At 06:16 AM 6/27/2006, John L Merrill wrote:
>I wonder what is a good quality notebook?
>
>73,
>John N1JM
John,
I am happy with my Sony VIO, particularity with the display and video
card. It runs faster at 1.8 GHZ than my HP AMD desk top at 2.1
GHZ. I got it on sale; probably last years model
I wonder what is a good quality notebook?
73,
John N1JM
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Dudley Hurry
Sent: Tuesday, June 27, 2006 12:29 AM
To: Gary W Strong; flexradio@flex-radio.biz
Subject: Re: [Flexradio] Notebook computers
Gary and o
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