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Most accurate signal generator
radiolistener:
--- Quote from: loop123 on April 02, 2024, 11:02:50 am ---I only use and familiar with Audacity which uses time scale in horizonal and not sample format. what other popular software uses samples format so i can try them all? tnx
--- End quote ---
Audacity has pretty poor filtering and FFT functionality and can raise many unexpected artifacts.
I recommend to use Matlab or Octave for such tasks.
loop123:
--- Quote from: radiolistener on April 03, 2024, 02:45:39 pm ---
--- Quote from: loop123 on April 02, 2024, 11:02:50 am ---I only use and familiar with Audacity which uses time scale in horizonal and not sample format. what other popular software uses samples format so i can try them all? tnx
--- End quote ---
Audacity has pretty poor filtering and FFT functionality and can raise many unexpected artifacts.
I recommend to use Matlab or Octave for such tasks.
--- End quote ---
What if I will use Owon HDS242S as replacement for the ADC + Audacity? how good is the adc in the HDS242S?
Also I need display software where it can do automatic real time filtering such as real time high pass filter. What software can do it? Audacity cant. Mathcad cant do real time display and its too complex. Just want to try it with user friendliness like Audacity.
ebastler:
--- Quote from: loop123 on April 03, 2024, 08:53:05 pm ---What if I will use Owon HDS242S as replacement for the ADC + Audacity? how good is the adc in the HDS242S?
--- End quote ---
It's an 8-bit ADC, and input noise is not even specified in the datasheet -- which means that it is not very good. For signals in the audio range, the Owon's ADC will be far worse than any sound card regarding resolution and noise.
(Of course it can capture signifcantly higher bandwidth signals, but you don't need that capability for your targeted application. And you "pay" for it with more noise.)
loop123:
--- Quote from: ebastler on April 03, 2024, 09:09:23 pm ---
--- Quote from: loop123 on April 03, 2024, 08:53:05 pm ---What if I will use Owon HDS242S as replacement for the ADC + Audacity? how good is the adc in the HDS242S?
--- End quote ---
It's an 8-bit ADC, and input noise is not even specified in the datasheet -- which means that it is not very good. For signals in the audio range, the Owon's ADC will be far worse than any sound card regarding resolution and noise.
(Of course it can capture signifcantly higher bandwidth signals, but you don't need that capability for your targeted application. And you "pay" for it with more noise.)
--- End quote ---
Its good you mentioned it. I nearly ordered it. What other least expensive oscilloscope with superb quality that can do better than E1DA ADC + Audacity combo with ability to interface to pc to capture the output for Mathcad etc processing in computer?
ebastler:
--- Quote from: loop123 on April 03, 2024, 09:37:47 pm ---Its good you mentioned it. I nearly ordered it. What other least expensive oscilloscope with superb quality that can do better than E1DA ADC + Audacity combo with ability to interface to pc to capture the output for Mathcad etc processing in computer?
--- End quote ---
Which aspect of the E1DA + PC + Audacity combination are you unsatisfied with??
If your frequency range of interest is the audio range or a subset of it, and you want low noise and low distortion, I don't think you can find any oscilloscope which can outperform that solution -- even at ten times your $200 price range and more. Oscilloscopes are designed for significantly higher bandwidth. That drives cost (or limits the number of bits an affordable ADC can provide) and has an adverse effect on noise.
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