Timeline for ADC Question for Sampling With Electret
Current License: CC BY-SA 3.0
9 events
| when toggle format | what | by | license | comment | |
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| Mar 4, 2013 at 4:28 | comment | added | user1569980 | Ok thanks, that clarifies things. I knew there were extras but wasn't sure if there was anything above my knowledge about the way an audio ADC works compared to a base regular ADC. Thanks guys! | |
| Mar 3, 2013 at 20:35 | comment | added | Scott Seidman | To "So if I'm looking to sample theoretically up to 6k, my ADC should be at least 12k?" the answer is yes. | |
| Mar 3, 2013 at 20:34 | comment | added | Scott Seidman | No difference, for the base ADC, but the device you point to has an embedded DSP with some built in tricks for processing audio, as well as automatic gain control. If you need this stuff, it looks great | |
| Mar 3, 2013 at 18:29 | comment | added | user1569980 | The question also still stands- what is the difference between the audio ADC and more general one with correct values for my application? | |
| Mar 3, 2013 at 17:10 | comment | added | user1569980 | Ok that makes sense, that's simple enough. So if I'm looking to sample theoretically up to 6k, my ADC should be at least 12k? | |
| Mar 3, 2013 at 16:22 | comment | added | Scott Seidman | No, to sample at 12k, you prefilter at <6k, and have no representaion of signals above 6k. | |
| Mar 3, 2013 at 15:29 | comment | added | user1569980 | Yes, Nyquist criteria. Certain voice recog. algorithms only sample at frequencies up to ~12KHz, as the 6KHz waves are about as high as necessary with upper harmonics more about how we hear things, not how a computer needs to see them. That being said, if I'm sampling at 12KHz, I need an ADC at 24KHz? Due to nyquist criteria, then, I need to double the sampling rate for each component I use? Is that what you're saying? | |
| Mar 3, 2013 at 12:35 | history | edited | m.Alin | CC BY-SA 3.0 |
some formatting
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| Mar 3, 2013 at 12:24 | history | answered | Scott Seidman | CC BY-SA 3.0 |