| ??? 01/10/05 22:21 Read: times |
#84697 - oversampling Responding to: ???'s previous message |
Kai Klaas said:
So, either you have a highly sophisticated anti-aliasing filter in front of your ADC, then you can sample at about 44kHz, or you need oversampling technique, where you sample at about 176kHz or even much more. Oversampling allows you to work with a less sophisticated low pass filter, not providing extreme high damping at the half of 44kHz. Pretty much every converter you'd buy these days uses sigma-delta sampling. There's a modulator that generates one-bit samples at a very high frequency (256, 384 or 512 times the sample frequency); this is followed by a decimator that gives you multi-bit samples at your desired rate (44.1 kHz, 48 kHz, 96 kHz, whatever). -a |
| Topic | Author | Date |
| Audio transmission over bluetooth | 01/01/70 00:00 | |
| Bluetooth | 01/01/70 00:00 | |
| Bluetooth | 01/01/70 00:00 | |
| Bluetooth + 8051 | 01/01/70 00:00 | |
| audio transmission | 01/01/70 00:00 | |
| DSP methinks | 01/01/70 00:00 | |
| Depends on your needs... | 01/01/70 00:00 | |
| oversampling | 01/01/70 00:00 | |
PCM3010 | 01/01/70 00:00 |