Re: [softrock40] Re: USB Sound Blaster Live 24 bit Question
I had apparently done something wrong when I installed the SB drivers and software. I completely uninstalled the software and installed just the minimum required. Rocky seems to be working just fine now. Thanks for your help. It pointed me to the way to get the USB SB working.
Jim - W4BQP
--- In softrock40@yahoogro ups.com, Jim Campbell <jim_c@...> wrote:
> I am running Rocky on an HP laptop that only has a microphone
> input. Based on comments on this list I purchased a USB SoundBlaster
> Live external sound card. I can kind-of run Rocky using the internal
> sound card, but can't get the SoundBlaster card to work at all.
> Can someone who has this setup running contact me and tell me how to
> cable the SoundBlaster card to the Rocky device and the laptop?
I am using a USB SB live 24bit external with my sockrock radio.
(On a Toshiba laptop with Windows XP SP2)
I found that the universal USB sound drivers built into windows XP
weren't very good - I couldn't get rocky to do 96khz sample rate with
the SB Live even with the "monitor" option turned off.
I then installed the drivers and other software that came with the SB
Live (follow the instructions that come with the SB Live). Tell the
install utility that you only have two speakers. Do not enable
surround sound processing, graphic equaliser, etc
You then need to go into windows control panel and click on "Device
Control". In Device control make sure that "Audio Monitoring" is *NOT*
enabled, then set your sample rate to 96khz and your bit rate to 24bit.
In Rocky, you can click on View, then Settings, and in the window that
pops up, you can select which I/Q input device to use (SB Live! 24bit
External) and sample rate, I/Q polarity, etc
The audio output device that you see at the bottom of this screen is
what Rocky plays the demodulated audio out of, you probably want to
leave this set to your computer's built in sound card.
If you then click on the tab "Transmit", you can select the IQ output
device (SB Live! 24bit External)
As I haven't got a proper antenna up yet, and I have not yet
calibrated the I/Q phase balance for transmit, I have not tried the SB
live on transmit yet - I would try using the Front Speaker or
Headphone sockets on the SB Live the TX I/Q output to the softrock.
If you still have problems then please make sure that CMSS (the green
light on the front of the SB Live), bass boost, graphic equaliser,
EAX/surround sound processing, "What U hear", etc are all turned off
as they will mangle the I/Q signals.
Ross Whenmouth ZL2WRW