Re: [wsjt-devel] Updating the WSJT-X User Guide; OS X sample rate

[Wolfgang]

Title: Re: [wsjt-devel] Updating the WSJT-X User Guide; OS X sample rate


Hello Joe, 

yes, unfortunately ... 

iMac OSX 10.13.3 connected via usb to an IC-7300 

port speed is 4800 Baud and the sampling had to be set to 44100, 
if it is set to 48000 the OSX will switch after two or three TX  
cycles to the internal speakers. Since set to 44100 the iMac works  
with 1.8 GA without problems. 
--- 
Had a discussion with another Ham, he insisted to use the 1.8 rc3 
because the 1.8 GA 'does not work' with his setup. rc3 was no problem. 
Apparently due the port speed of 38400 to a 'micro Keyer II' interface 
and Windows. Could not convince the guy to change the port speed  
- no, why should I, if rc3 is working for me and the GA hangs - was 
his answer... ;-( Sorry, I have no more info about this. 

--- 

73 de Wolfgang 
OE1MWW 

Thursday, February 8, 2018, 7:07:15 PM, you wrote: 

> Hi all, 

> In preparation for an upcoming release candidate of WSJT-X v1.9.0, I am 
> updating the WSJT-X User Guide.  If you are aware of anything that needs 
> work in the User Guide, please post a message here or otherwise let me know. 

> Here's a specific question for Mac users.  In Section 3.3 we currently 
> say this: 

> "Use the Mac’s Audio MIDI Setup utility to configure your sound card for 
> 48000 Hz, two-channel, 16-bit format." 

> But several Mac users have reported losing audio unless they set the  
> sample rate to 44100 Hz.  Is this always the case with OS X?  Should  
> this instruction be changed? 

>         -- 73, Joe, K1JT 

> -- 
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Re: [wsjt-devel] Updating the WSJT-X User Guide; OS X sample rate

[George J Molnar]

Joe, 

I have not experienced this issue using virtual audio cables (Flex 6000-series 
DAX support) running at 48k. However, using an external USB sound card, the 
problem does intermittently rear its head. Am not sure if the 44.1k “fix” is 
anecdotal or not, or if it covers all versions of MacOS. It does appear to have 
worked for several people.

Suggest recommending the 48k rate, while allowing that, “in the event of 
unexpected audio issues” a 44.1k rate may be helpful to try.



George J Molnar
Washington, DC, USA
KF2T   -   @GJMolnar









> On Feb 8, 2018, at 1:07 PM, Joe Taylor  wrote:
> 
> Hi all,
> 
> In preparation for an upcoming release candidate of WSJT-X v1.9.0, I am 
> updating the WSJT-X User Guide.  If you are aware of anything that needs work 
> in the User Guide, please post a message here or otherwise let me know.
> 
> Here's a specific question for Mac users.  In Section 3.3 we currently say 
> this:
> 
> "Use the Mac’s Audio MIDI Setup utility to configure your sound card for 
> 48000 Hz, two-channel, 16-bit format."
> 
> But several Mac users have reported losing audio unless they set the sample 
> rate to 44100 Hz.  Is this always the case with OS X?  Should this 
> instruction be changed?
> 
>   -- 73, Joe, K1JT
> 
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> ___
> wsjt-devel mailing list
> wsjt-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/wsjt-devel

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Re: [wsjt-devel] Updating the WSJT-X User Guide; OS X sample rate

[Bill Somerville]

On 08/02/2018 18:07, Joe Taylor wrote:
"Use the Mac’s Audio MIDI Setup utility to configure your sound card 
for 48000 Hz, two-channel, 16-bit format."


But several Mac users have reported losing audio unless they set the 
sample rate to 44100 Hz.  Is this always the case with OS X? Should 
this instruction be changed?


Hi Joe,

this is only necessary for certain Mac hardware, it seems to be a defect 
either in the USB hardware or the drivers for it. Many Mac users have no 
problem using the audio sample rate at 48000 Hz.


Perhaps an FAQ entry, "If you are using macOS with an external audio 
device and find that Tx audio spontaneously switches to the motherboard 
sound device after a few transmission; try setting the sample rate in 
the Audio MIDI Setup Utility to 44100 Hz rather than the recommended 
48000 Hz".


73
Bill
G4WJS.


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[wsjt-devel] Updating the WSJT-X User Guide; OS X sample rate

[Joe Taylor]

Hi all,

In preparation for an upcoming release candidate of WSJT-X v1.9.0, I am 
updating the WSJT-X User Guide.  If you are aware of anything that needs 
work in the User Guide, please post a message here or otherwise let me know.


Here's a specific question for Mac users.  In Section 3.3 we currently 
say this:


"Use the Mac’s Audio MIDI Setup utility to configure your sound card for 
48000 Hz, two-channel, 16-bit format."


But several Mac users have reported losing audio unless they set the 
sample rate to 44100 Hz.  Is this always the case with OS X?  Should 
this instruction be changed?


-- 73, Joe, K1JT

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