https://www.xmos.com/en/support/downloads/xsoftip appearently XMOS have some kind of implementation or just designs for interfaces and application demos that might be portable to the start kit.
Interfaces S/PDIF Transmitter ComponentxSOFTip_roadmap.zip I2S Master Audio Driversc_i2s.zip TDM Audio Driver ComponentxSOFTip_roadmap.zip ADAT TransmitterxSOFTip_roadmap.zip MIDI ComponentxSOFTip_roadmap.zip S/PDIF Receiver ComponentxSOFTip_roadmap.zip DSP Short-Delay Slicekit Audio Demosw_audio_effects.zip Long-Delay Slicekit Audio Demosw_audio_effects.zip Audio Long Delay-line Function Librarysw_audio_effects.zip Non-linear-gain Function Librarysw_audio_effects.zip BiQuad Function Librarysw_audio_effects.zip Audio Short Delay-line Function Librarysw_audio_effects.zip Long-Reverb Slicekit Audio Demosw_audio_effects.zip Short-Reverb Slicekit Audio Demosw_audio_effects.zip Reverb Function Librarysw_audio_effects.zip DSP Audio Utilities Function Librarysw_audio_effects.zip SDRAM_Reverb Function Librarysw_audio_effects.zip Loudness Slicekit Audio Demosw_audio_effects.zip BiQuad Filter SliceKit Audio Demosw_audio_effects.zip BR Bo-Erik -----Original Message----- From: Sursound [mailto:sursound-boun...@music.vt.edu] On Behalf Of Bo-Erik Sandholm Sent: den 20 december 2013 14:18 To: Surround Sound discussion group Subject: [Sursound] A gift for the 2014 Christmas? I this something that can be done? We still don't have a simple low cost ambisonic hardware player, for first order in the initial implementation :-) Here is an half assed idea I would like someone to do for us/me - I know it would/will take years for me if i ever get it done. The hardware could be RPi with linux www.cmos.com/startkit RPi Pin compatible 8 core 300 MIPS DSP with GPIO or XMOS sliceCard connector 15 USD. http://www.pcm63.com/?182,ym3623b-digital-audio-interface-receiver-module - I2S to ADAT 25 USD/interface. Or https://ackspace.nl/wiki/ADAT_project implemented in multicore with 2(or more) TOSLink sender modules? Maybe we can have several I2S multichannel DAC's directly on a plugin card for the XMOS SliceCard interface? Choices to make, output connected to RPi or XMOS? ADAT directly on XMOS to Toslink or via I2S with more hardware. OR 2 x 8 channel DAC's connected to RPI or XMOS multicore I2S or other interface to DAC's. Software A version of linux for RPi Simple player can be recompiled to play multichannel files. http://offog.org/code/potamus/ http://mygeekopinions.blogspot.se/2011/08/how-to-install-potamus-music-player-in.html this how it looks! Files and directories can be added to the playlist by drag-and-drop, or by giving potamus command-line parameters on startup. Other players could ofcourse be used. Ambdec from http://kokkinizita.linuxaudio.org/linuxaudio/ Can the decoding and conversion to ADAT be done in the 8 xcore processor in the XMOS starterkit? Is the porting to XMOS DSP architecture easy and/or doable? A way to change the decoding parameters that is not overly complicated. Output via ADAT - to for example 2 of the Behringer ADA-8000, or using http://www.wavefrontsemi.com/index.php?id=11,10,0,0,1,0#productdocsoft or http://electronics.dantimax.dk/Kits/Digital_audio/index.html to convert to and from I2S. Choices to make, output connected to RPi or XMOS? ADAT directly on XMOS to Toslink or via I2S with more hardware? OR 2(or more) 8 channel DAC's connected to RPI or XMOS multicore via I2S or other interface for DAC's. Similar solutions can of course be implemented with other platforms but the start setup without audio interfaces is low cost and almost plug and play :-) with this hardware setup. Best Regards Bo-Erik Sandholm Stockholm Sweden _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
