One question about the output attenuators, are the output voltages the same for both balanced and single ended outputs?
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The single ended outputs are connected directly to the (+) outputs of the balanced signals. So if you have 1V balanced out, you will get 0.5V out on the single ended output.
Not surprising as a 2010 MacBook Pro will have this specification, and at least 2 times more processing power than my notebook.
My notebook is fine if I lower the bin size or the sampling rate, it just gets slow when all the settings are max out.
Wait a minute.
I have soundcard installed on my lab computer with ASIO drivers installed, it's an old Audiophile 24/96 PCI card.
Can it coexist with the Jensalyser although I know that I can only use one at a time, or do I have to uninstall the 24/96 drivers in order to use the RTX ???
It would be nice to have both working in the same computer.
I have soundcard installed on my lab computer with ASIO drivers installed, it's an old Audiophile 24/96 PCI card.
Can it coexist with the Jensalyser although I know that I can only use one at a time, or do I have to uninstall the 24/96 drivers in order to use the RTX ???
It would be nice to have both working in the same computer.
No problem with ASIO and multiple interfaces.
I had about four soundcards active in my recording rig, with one doubling up for measurements. All but one have their own driver and control panel, and work with both WDM and ASIO. The one that doesn't is the HDMI audio output on the video card.
I had about four soundcards active in my recording rig, with one doubling up for measurements. All but one have their own driver and control panel, and work with both WDM and ASIO. The one that doesn't is the HDMI audio output on the video card.
I don't expect any problems.
It should be OK to use the Audiophile 24/96 and the RTX6001 simultaneously. As long as the PC is fast enough, which will generally not be an issue with modern PC's.
I have often used the RTX6001 and e.g. an M-Audio sound card or a TC Electronics sound card at the same time. They each use their own ASIO driver.
It should be OK to use the Audiophile 24/96 and the RTX6001 simultaneously. As long as the PC is fast enough, which will generally not be an issue with modern PC's.
I have often used the RTX6001 and e.g. an M-Audio sound card or a TC Electronics sound card at the same time. They each use their own ASIO driver.
I have 3 soundcards in the same system and all the software I have tried works OK. You may have an issue when you have more than 10 audio I/O's showing because the software did not anticipate that many sound interfaces but I have only seen that once.
ASIO only supports one card at a time. WDM allows one for the DAC and another for the ADC.
ASIO only supports one card at a time. WDM allows one for the DAC and another for the ADC.
Me too.
True, that is, in one and the same instance. But you can run more than one instance of the same program (or another program) as long as they address different ASIO sound cards.
Cheers, E.
Hmm, it really depends on the real SW implementation and HW driver support.
Some HW do not have an ASIO multi client support. This means only one instance deal with same HW & SR for I/O.
The SW may have only one ASIO (as Sync I/O) engine too, this means the SW blocks any other instances too.
For this combination I have 3 ASIO engines: Sync I/O (all runs with same SR & Buffer size as Latency), Multi Client Input & Multi Client Output to have individual HW for input and output and each with different SW support.
Also if you run WASAPI exclusive, some combination will be not supported too. All really depends on HW & SW & Driver.
In addition if you connect two equal HW, the HW driver has to support this combination too! Possible using 2 different USB HW ID's or the driver is able to deal with this (See at RME).
Hp
Hi Jens,
A thought just occurred to me. Too bad we have to use software that isn't specifically designed for your instrument. If you could choose the centre frequency and span independently, it would make your tester far more powerful. It would also allow one to take a measurement at a specific frequency to aid in adjusting 19 and 38 KHz traps, or tape bias traps in real time. Running a sweep would make using this for adjustments very difficult. I'm afraid I would resort to an HP 3581 or a low frequency spec-an set for zero span so you only get real time level measurements. I have an HP 35665A signal analyser that I'll try with this. It works on an HP 3585A/B spec-an.
Just think. It will do it if just controlled properly. Same for using a compressed range in case you are looking for a specific area - like DC supply voltages and looking for hum.
-Chris
A thought just occurred to me. Too bad we have to use software that isn't specifically designed for your instrument. If you could choose the centre frequency and span independently, it would make your tester far more powerful. It would also allow one to take a measurement at a specific frequency to aid in adjusting 19 and 38 KHz traps, or tape bias traps in real time. Running a sweep would make using this for adjustments very difficult. I'm afraid I would resort to an HP 3581 or a low frequency spec-an set for zero span so you only get real time level measurements. I have an HP 35665A signal analyser that I'll try with this. It works on an HP 3585A/B spec-an.
Just think. It will do it if just controlled properly. Same for using a compressed range in case you are looking for a specific area - like DC supply voltages and looking for hum.
-Chris
Look at Spectrumlab DL4YHF's Audio Spectrum Analyser and who knows what other software. The hardware really doesn't limit the software. There are other software that have center/span for spectra. None will work quite the same as a wave analyzer for that task.
I would like to see a current overview of the PC software for audio measurements. There are many to chose from. All have some limits and can be easier/harder to use. I would contribute my experiences if someone gets it started. Probably in software tools.
Hi Demian,
Demian, that is an excellent link full of information. Have you actually played with this software?
-Chris
Now, there is an idea for an excellent thread if I ever had heard before! It would really benefit the DIYAudio community.
Demian, that is an excellent link full of information. Have you actually played with this software?
-Chris
I have used it to solve a measurement problem. Its been a while so I have forgotten the details but the software was good.
If no one else steps up to the plate I'll start something on software next week.
If no one else steps up to the plate I'll start something on software next week.
Somebody already has: http://www.diyaudio.com/forums/software-tools/306574-analyzer-software-overview.html#post5050413
Jan
Jan
Uhm, why wouldn't that be possible? Just find the software package that suits your requirements and you're good. I am pretty sure MATAA would work well for your purposes.
Hi guys!
Great project and I'm about to join the Group Buy!
However a question bothers me - there is an input attenuator with 10 dB step. Is this enough granular?
I don't want to be mean in any way, but what about a secondary stepped attenuator with 10 steps which would give 1 dB granularity? I'm not familiar enough with the project and with the unit's construction - probably this question has been already discussed - once again excuse my inappropriate question.
Regards
Alex
Great project and I'm about to join the Group Buy!
However a question bothers me - there is an input attenuator with 10 dB step. Is this enough granular?
I don't want to be mean in any way, but what about a secondary stepped attenuator with 10 steps which would give 1 dB granularity? I'm not familiar enough with the project and with the unit's construction - probably this question has been already discussed - once again excuse my inappropriate question.
Regards
Alex
