ADP3450 for Audio Analysis

[Skylär Astaröt]

Hello people, I have in the Amazon shopping cart, the new Analog Analyzer ADP3450, it is the most complete to date, but I want to make sure that it will serve for the use that I will give it.

What I want to do is a complete analysis of the audio of my audio interfaces, both in analog and digital response, as complete as possible for industrial production, as shown in the image.

Possibility to analyze the signal with 24-bit depth, 768kHz for industrial environments, SDK for Matlab and the following list of measurements:

1. Acoustic Response
2. Bandpass Level
3. Bandpass Level Sweep IMD Frequency Sweeps Polar Plots
4. Crosstalk Sweep, 1 Channel Driven Q-peak Noise
5. Crosstalk Sweep, 1 Channel Undriven Input Sample Rate Regulated Frequency Sweep
6. Crosstalk, 1 Channel Driven
7. Crosstalk, 1 Channel Undriven
8. Crosstalk, Custom Measurement
9. DC Level
10. DC Level Sweep
11. Digital Error Rate
12. Dynamic Range / SNR (AES17)
13. Frequency Response
14. IC testing for I2S, SPI, DSP, I3C, McASP, SLIMbus, custom
15. IDM (Intermodulation Distortion)
16. Impedance/Thiele-Small
17. Interchannel Phase
18. Jitter Level
19. Level Ratio SNR
20. Maximum Output Level
21. Maximum Output per CEA-2006
22. Measurement Recorder
23. Modulated Noise
24. Multitone Analysis
25. Noise
26. Noise Recorder
27. SINAD (Signal-to-noise and distortion ratio)
28. Stepped Frequency Sweep
29. THD+N (Total harmonic distortion and noise)
30. Transfer Function

Is it possible that I can modify the device for these kinds of solutions? either through Matlab or Labview with WaveForms SDK, and if it is possible to connect the equipment to be analyzed using BNC-Jack or BNC-Toslink Optical adapters.

My cordial greetings.

Edited November 29, 2021 by Skylär Astaröt
Toslink conector add

[cprosser]

The AD3450 only has a 14 bit ADC in it. For repeated signals it can software enhance that up to 16 bits. But that's far shy of what you are looking for.

 

It sounds like a device more like the Audio Precision APx515 might be better suited for your needs (provided it has the dynamic range you need and you won't need a higher end model). The Quant Asylum QA402 may also fit the bill.

[Skylär Astaröt]

The AP 515 is the best option, but look at this !!

https://i.imgur.com/WG2gY1x.png

Do you think I would spend such a fortune for my recording studio? These are quality control laboratory equipment from factories like Focusrite, Yamaha, Roland, Antelope, AVID, etc ...

With that money I put together a great Pro Tools-based studio with a workstation.

I need something simpler and simpler to test my equipment, and then implement them in my DSP developments, I wish I had an industry behind me, but I have to accommodate my budget.

[cprosser]

I hear your pain. I dabble in audio stuff which is why I'm aware of those solutions, but I don't own any :-). As you saw, the audio precision in particular is super expensive. Even used ones hold their value really well. It wasn't clear from your original post what your budget was. I also had no idea the audio precision was $7000. Ouch.

If you've never seen the Audio Science Review forum, there are number of people there whom assemble test rigs with much more affordable price points for doing these sorts of stuff. That's where I learned about the Quant asylum.

Good luck in finding the best trade-off with budget and capability.

 

Edited December 4, 2021 by cprosser

[zimbot]

Just thinking this through...

Starting with 100MHz sample rate (but only about ~30MHz bandwidth) measurements and 14bits, down-sampling to 768kHz is a factor of about 130 (close to 128) which would allow you to increase the effective bit depth by a little more than 7 additional bits.  So that gets you up to between 21 and 22 bits, not 24 bits.  This would work better if there is a little high-frequency noise in your starting signal, at a magnitude of about 1/2 a bit (kind of like dither).  The result *might* be good enough, depending on your needs.  Or, to get to full 24 bits, that would be a decimation factor of 10, and 2^10 = 1024, which pulls it down to just over the standard 96kHz sample rate.  Other, off-the-shelf audio interfaces can do that with a lot less trouble (but whether any provides calibration quality at an affordable price is another question, which I cannot answer).

[Skylär Astaröt]

Excellent answer Zimbot, I think there is audio interface with built-in calibration to use. As measurement equipment, you would have to look it up from their respective manufacturers, because dedicated devices are designed for manufacturers, not hobbyist developers like me.