Timeline for 12 bit ADC to 8 bit DAC
Current License: CC BY-SA 3.0
9 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 2, 2014 at 23:37 | vote | accept | AndrejaKo | ||
| Jul 8, 2013 at 16:25 | comment | added | endolith | I would guess that DTMF doesn't care much about SNR, but yes, you can probably improve it with noise shaping, such as sampling at 16 kHz and using dither that's shaped to put all the noise above 4 kHz. | |
| Jul 7, 2013 at 22:59 | history | tweeted | twitter.com/#!/StackSignals/status/354011777014562816 | ||
| Jul 7, 2013 at 18:22 | comment | added | AndrejaKo | @endolith Well currently the main purpose would be to play around with DTMF, so highest frequency should be 1477 Hz. From what I've read, common sample frequency for it would be 8 kHz. I'm also considering using a multiple of 8 kHz, since microcontroller can do hardware averaging on the sampled data. | |
| Jul 7, 2013 at 18:06 | comment | added | endolith | What frequencies are the signal and what sampling frequency? Depending on what you're doing you can use shaped dither to improve the SNR by moving the noise up into frequencies above the signal | |
| Jul 6, 2013 at 15:45 | answer | added | Jim Clay | timeline score: 3 | |
| Jul 6, 2013 at 10:29 | answer | added | pichenettes | timeline score: 3 | |
| Jul 6, 2013 at 9:25 | history | edited | AndrejaKo | CC BY-SA 3.0 |
added 2 characters in body
|
| Jul 6, 2013 at 8:00 | history | asked | AndrejaKo | CC BY-SA 3.0 |