Nikitas
This interface is 1/2 the price of a Lynx Hilo which is the closest commercial device. It has a better input circuit and can be used for measurement or recording.
You could use Jan's interface but you still need a soundcard or a QA401. None of these are cheap.
This interface is 1/2 the price of a Lynx Hilo which is the closest commercial device. It has a better input circuit and can be used for measurement or recording.
You could use Jan's interface but you still need a soundcard or a QA401. None of these are cheap.
Definitely still interested. An update on the full spec sheet (given a few prototypes have been built and tested) and confirmation that there will be access to enough info for basic fault finding and repair should the need arise.
Couple of questions.
1. On the first post, ADC is noted as 32-bit, is that a typo? The final product is using a 24-bit ADC.
2. Can the input be connected directly to an electret measurement mic without an additional mic preamp? How about the 48v phantom supply needed by the mic?
trying to find out if this unit can also serve the purpose of loudspeaker measurements.
thanks
1. On the first post, ADC is noted as 32-bit, is that a typo? The final product is using a 24-bit ADC.
2. Can the input be connected directly to an electret measurement mic without an additional mic preamp? How about the 48v phantom supply needed by the mic?
trying to find out if this unit can also serve the purpose of loudspeaker measurements.
thanks
I don't believe 48V phantom power is provided, likely gains are not appropriate either. All easily remedied with an external microphone pre-amp. (Which is what I will do when needed.)
You can add a is phantom power supply but its not part of the current spec. Its effectively a really good usb soundcard so it should work with most software. There are no 32 bit adcs or dacs. There are dacs with 32 bit processing which is a value. I'm not sure how Jens ment to describe what he built.
Sent from my LG-H811 using Tapatalk
Sent from my LG-H811 using Tapatalk
@kevinkr
Sorry, no definitive date yet. Long lead time components are in progress.
@diyaudnut
1. It seems like I forgot to update this. I started out with the AK5397, which is a 32 bit converter. But you are right, the AK5394A is a 24 bit converter. The DAC is a 32 bit converter.
2. There is no phantom power supply. You could use an external phantom supply. For most microphones you probably don't need an external amplifier.
Sorry, no definitive date yet. Long lead time components are in progress.
@diyaudnut
1. It seems like I forgot to update this. I started out with the AK5397, which is a 32 bit converter. But you are right, the AK5394A is a 24 bit converter. The DAC is a 32 bit converter.
2. There is no phantom power supply. You could use an external phantom supply. For most microphones you probably don't need an external amplifier.
Thanks for the answers
Any recommendations for an XLR in/out mic preamp with phantom supply?
https://www.amazon.com/Behringer-80...UTF8&qid=1488904306&sr=8-1&keywords=XENYX+802
Unless you are using a really low output mike you should not need a preamp. The typical ECM mike is approx 5 mV for 94 dB or 50 mV for 114 dB. The ADC in the box has as much as 120 dB dynamic range so at its max input sensitivity (100 mV I think) You should be fine with the noise floor at an equivalent to -2 dBSPL or more relevant, 40 dB below the self noise of the microphone (if you are lucky, usually the mikes are noisier than that). The input noise will limit that but its still below the microphone.
All you need is a simple phantom power interface. I would get this: https://www.amazon.com/gp/product/B...-e661-5184-9490-71a0c291599a&pf_rd_i=11974571 which is priced near the parts cost.
All you need is a simple phantom power interface. I would get this: https://www.amazon.com/gp/product/B...-e661-5184-9490-71a0c291599a&pf_rd_i=11974571 which is priced near the parts cost.
Jens an off topic post that might interest you has been relocated here: http://www.diyaudio.com/forums/digi...ng-existing-xmos-controller-added-ak-adc.html
Sorry for being silent for such a long time. Some formal decisions have been made recently and things are going in the right direction.
My target is to launch the official group buy next week. I cannot promise it, but that's my target.
My target is to launch the official group buy next week. I cannot promise it, but that's my target.
Hi Jens,
No worries. Take the time you need. I'm committed, but trying to work on cash in order to pay you. That is a serious problem right now for me.
-Chris
No worries. Take the time you need. I'm committed, but trying to work on cash in order to pay you. That is a serious problem right now for me.
-Chris
My time horizon is much shorter and need much more immediate than anatech's so this is good news for me. I will sign up as soon as it goes up as a group buy.
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