That app should not remove noise,now i want to konw how to compute a dit duration from the buffer of audiorecord???
2012/1/13 RLScott <[email protected]> > Have you tested the app to see how much noise it can tolerate? And > have you listened to how much noise there is in actual use on the > shortwave radio bands? > > On Jan 13, 12:22 am, Ludy Lu <[email protected]> wrote: > > android market has a application named morse code reader can convert > morse > > sound to text... > > > > 2012/1/13 RLScott <[email protected]> > > > > > > > > > The job of parsing Morse code can be very simple if the sound is clean > > > and regular. If it is a little bit irregular in timing, then the job > > > gets harder. If there is a little noise, then it gets harder still. > > > And if there is a lot of noise, then the programming becomes nearly > > > impossible. The last I heard, a program could not beat a trained > > > human listener in the toughest of environments. So how clean and > > > regular in timing is this Morse code that you want to parse. > > > > > On Jan 12, 10:48 pm, Ludy Lu <[email protected]> wrote: > > > > now question is how to remove noise and how to compute a dit length > from > > > > pcm buffer??? > > > > > > 2012/1/13 Indicator Veritatis <[email protected]> > > > > > > > It would if there were an Android API for it. I am not aware of > one, > > > > > and I doubt one exists. This is rather a fairly simple (audio) > signal > > > > > processing task. > > > > > > > What does have to do with Android is the question: how can he use > the > > > > > phone's microphone to listen to the sound, what APIs should he use > to > > > > > generate an audio stream out of it (for that signal processing)? > The > > > > > answer to these questions is not obvious either. > > > > > > > On Jan 12, 10:47 am, TreKing <[email protected]> wrote: > > > > > > On Thu, Jan 12, 2012 at 2:13 AM, ludy <[email protected]> wrote: > > > > > > > i use audiorecord to record morse sound ,and then need to > convert > > > morse > > > > > > > sound to text,how to do that??? > > > > > > > > Write the code to do that or use a library. This has nothing to > do > > > with > > > > > > Android specifically. > > > > > > --------------------------------------------------------------------------- > > > ---------------------- > > > > > > TreKing <http://sites.google.com/site/rezmobileapps/treking> - > > > Chicago > > > > > > transit tracking app for Android-powered devices > > > > > > > -- > > > > > You received this message because you are subscribed to the Google > > > > > Groups "Android Developers" group. > > > > > To post to this group, send email to > > > [email protected] > > > > > To unsubscribe from this group, send email to > > > > > [email protected] > > > > > For more options, visit this group at > > > > >http://groups.google.com/group/android-developers?hl=en > > > > > -- > > > You received this message because you are subscribed to the Google > > > Groups "Android Developers" group. > > > To post to this group, send email to > [email protected] > > > To unsubscribe from this group, send email to > > > [email protected] > > > For more options, visit this group at > > >http://groups.google.com/group/android-developers?hl=en > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
