Audio streaming to iPhone

I now have the audio streaming from ghpsdr to the iPhone. I am sending it at 8K samples per second and sounds OK. Did a very simple implementation of taking 1 in 6 of the 48K samples being fed back to Mercury. Also just sending one channel.

Now it needs the ability to change band, filters and mode for a fully functional internet radio.

I should get a development board for the iPhone next week which will let me dock the iPhone and get access to line-in and line-out. I intend to look at taking the I/Q data from a softrock receiver and processing it directly on the iPhone. Should make a great little portable receiver.

iPhone

I now have the iPhone working well displaying the spectrum from ghpsdr.

I have also added a button to configure the application.

Next step is to look at adding the audio stream.

More iPhone

I have now got the iPhone working when I can see real time spectrum from ghpsdr using a tcp socket to get the data.

I also added the ability to change frequency by dragging on the iPhone display.

Now to try to get the audio streaming to the iPhone as well ;-)

iPhone teaser ...

I got a little side tracked this week playing with the iPhone SDK. I wanted to see if I could get something working that will, at a minimum, display the spectrum for the currently selected frequency so that I could monitor HPSDR remotely using my iPhone.

This is some prototype code running on the iPhone Simulator (it does run on my iPhone as well). It is updating the display 15 times per second. The data is currently 2 seconds of spectrum samples (30*4096 samples) that I captured using ghpsdr and wrote them to a file that are repeated while the application runs.

Next step is to add the ability to ghpsdr to write them to a socket connection and add the code to the iPhone to make a socket connection to ghpsdr.

Better startup ...

The code now will detect that ozy is not powered on or plugged in and allow the user to retry.




It will then run initozy if required.

Added first cut at support for transverters

The svn store now has the first cut of code to support transverters:

svn://206.216.146.154/svn/repos_sdr_hpsdr/trunk/N6LYT/ghpsdr

Major updates to ghpsdr

Made some changes to cleanup the GUI and added support for clock source selection.

The version of DttSP has been replaced with a ported version of the current Windows DttSP code in preparation for the development of the transmit code to support Penelope.