| ??? 03/29/05 06:13 Read: times |
#90576 - Not at all! Responding to: ???'s previous message |
Sushil Raut said:
... in PWM mode, it is not possible to generate audio tones of different frequency viz., 250 Hz, 500 Hz and 1 kHz (which i intend to generate). No, that's not it at all! If all you need to do is to vary the frequency, then you don't need PWM at all! You just need a simple frequency divider. If you want to vary both the frequency and the volume (amplitude) of the tone, then PWM can give you the amplitude variation, but not the frequency variation. To get variable frequency and amplitude, you need to vary the divider value to give the required frequency, and then Pulse-Width Modulate that signal. |
| Topic | Author | Date |
| PWM generation using microcontroller | 01/01/70 00:00 | |
| Whats your intention. | 01/01/70 00:00 | |
| PWM generation using microcontroller | 01/01/70 00:00 | |
| Freq. or duty cycle or both ? | 01/01/70 00:00 | |
| PWM? | 01/01/70 00:00 | |
| Amplitude? | 01/01/70 00:00 | |
| Amplitude control by PWM | 01/01/70 00:00 | |
| I agree... | 01/01/70 00:00 | |
| Back to the question | 01/01/70 00:00 | |
| Remote hugging.. | 01/01/70 00:00 | |
| Sorry guys... | 01/01/70 00:00 | |
| PWM generation using microcontroller | 01/01/70 00:00 | |
| Not at all! | 01/01/70 00:00 | |
| Varying both frequency and duty cycle. | 01/01/70 00:00 | |
| possibly this way | 01/01/70 00:00 | |
| thanxs but.................. | 01/01/70 00:00 | |
| PWM and frequency | 01/01/70 00:00 | |
| This thread is fuzzy because | 01/01/70 00:00 | |
Both frequency and amplitude? Yes! | 01/01/70 00:00 |