Email: Password: Remember Me | Create Account (Free)

Back to Subject List

Old thread has been locked -- no new posts accepted in this thread
???
09/21/06 06:57
Read: times


 		 #124752 - You basically need a phase locked loop
Responding to: ???'s previous message
In software which produces an output proportional to the error in the frequency of the input signal,in principle writting a software PLL isnt the hard part, the hard part is quite a lot of what could probably be converted into fixed point signal processing, and conditioning the input signal in real time.The input signal isnt going to be a sine wave its going to be a sine wave plus a lot of overtones which need filtering either in hardware or software.

List of 31 messages in thread
TopicAuthorDate
Auto Violin Tuner            01/01/70 00:00      
   Tuner            01/01/70 00:00      
      You basically need a phase locked loop            01/01/70 00:00      
   use your ears?            01/01/70 00:00      
      you are right            01/01/70 00:00      
         the bane of much learning            01/01/70 00:00      
   suggested improvement            01/01/70 00:00      
      improved inprovement            01/01/70 00:00      
         Corrected            01/01/70 00:00      
   Drop the violin.. and git ya a fiddle!            01/01/70 00:00      
      how did I guess that came from the state where            01/01/70 00:00      
      Musician Joke            01/01/70 00:00      
   This is normally done by the ears            01/01/70 00:00      
      depends on what you really want ...            01/01/70 00:00      
         Now that *is* clever!            01/01/70 00:00      
            That's a good one !!!            01/01/70 00:00      
            somehow, Andy I got a mental picture of            01/01/70 00:00      
               Well, you do have to remove the BS first            01/01/70 00:00      
      440 Hz source            01/01/70 00:00      
         No suited quartz            01/01/70 00:00      
            I'd recommend a frequency synthesizer            01/01/70 00:00      
               Yes, that's standardly used in such an application            01/01/70 00:00      
                  would that be a problem?            01/01/70 00:00      
                     Jitter?            01/01/70 00:00      
                        years ago ...            01/01/70 00:00      
   strobe tuner!            01/01/70 00:00      
      Costly!            01/01/70 00:00      
   How about generating the tones?            01/01/70 00:00      
      you'll want to filter the output            01/01/70 00:00      
         Are they unwanted?            01/01/70 00:00      
            the string does produce harmonics            01/01/70 00:00      

Back to Subject List