Sebastian how do you feed the analog amplifier? 150W is damn a lot 04 дек. 2013 г. 20:27 пользователь "cmicali" <chris.mic...@sagedevices.com> написал:
> Very cool project sebastian - would definitely be interested in purchasing > a cape and checkout out the firmware. > > -c > > > On Tuesday, December 3, 2013 3:39:20 PM UTC-5, Sebastian Wendt wrote: >> >> Hello everybody, >> >> I have just received first sample boards of my CarStreamer cape for >> Beaglebone. >> CarStreamer includes: >> >> 4x50W(RMS) Class-D Audio Amplifier (FDA450) connected to McASP0 and I2C >> Stereo Audio Codec with 2x LineOut, 2x LineIn and 1x Mic In >> (TLV320AIC3104) >> FM/DAB receiver circuit (with RDS support, ...) connected to McASP1 and >> UART >> 5V 3A Step-Down Power Supply >> Infrared Remote Control receiver >> >> My plan is to use it as Car Radio replacement in my classic cars, so I >> can have high fidelity audio playback and latest media connectivity (via >> USB, SD-Card and Bluetooth) without destroying the look of my dashboard >> with one of these ugly aftermarket car radios. >> But of course the cape can also be used to extend your BeagleBone to a >> powerful home hifi system. >> >> The user interface is displayed on my Smartphone (I have started to >> develop an Android App for this based on Qt for Android which already works >> quite well) and I can benefit from, the phone's Navigation and voice >> recognition feature. >> Of course I can use CarStreamer as Hands-Free Telephony system with >> integrated Echo Cancellation and Noise Reduction feature. >> The hardware was designed according to Automotive OEMs requirements, so >> should very reliable and ruggedized. >> >> Carstreamer firmware is based on kernel 3.8 with an extension to the >> existing device tree. >> The main SW is written using the Qt framework for the application part >> and the audio framework is using PulseAudio. I have written a Plugin that >> integrates a powerful Audio Equalizing scheme incl. standard filters such >> as Bass, Mid, Treble, Graphics EQs but also Speaker Frequency Gain >> correction, Dynamic Bass boost and Limiters. >> It also integrates the EC/NR for Telephony and handles things like sample >> rate conversion and Bluetooth AADP audio. >> Next step for the Application is to integrate a Media Parser and Playback >> Engine for SD and USB media (any recommendations for libs/frameworks from >> your side) ? >> >> If anybody is interested in working on this project (the Android app or >> the Linux firmware) or on sample boards, please let me know. >> If am planning to release schematics and gerber files as soon as I have >> verified all parts of the boards. >> >> Currently more or less all peripherals of the Cape are working as >> expected (so yes, I can hear DAB radio stations through the speaker outputs >> of the Class-D amp :-)) but I had to integrate some tweaks and patches to >> the 3.8 kernel (e.g. enabling multi-serializer support on the McASP). >> >> Please let me know if you have any suggestions / proposals for >> enhancements or if you wish to know more about it. >> I am really planning to release the cape hardware and a aluminium >> extrusion housing as complete product in Q3/2014. >> >> >> Regards, >> Sebastian >> >> >> -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to beagleboard+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
