Dear Sursounders, soon I will start working on my Master's Thesis in Embedded Systems Engineering at FH Campus Vienna.
I'm interested in Ambisonics decoding and I have the idea to broadcast b-format over 802.11g to the speakers. A programmed microcontroller mounted right behind each speaker will receive the b-format stream and, by knowing the position of its speaker and the geometric formation of the array, the µC will solve the ambisonics decoding matrix and will send the calculated audio to the active speaker. Do you think, there is some interest in such a technique? Does somebody know other (or same) technical ideas or implementations? I've heard that Dolby works on streaming Dolby Surround over WLAN, but that's technically a different approach. This is not about auto-configure Ambisonic speaker arrays. My focus is in the realization of a wifi streaming application for b-format including a receiver which knows all needed information about the Ambisonic playback system to decode an appropriate sound signal. The main question will be: How can I guarantee that all receiving µCs work synchronous, or with so little jitter, that the sound image for the listener doesn't collapse? Further problems are: By using 802.11g, is there enough bandwidth for streaming uncompressed b-format? (minimum: 1st order, 48kHz,16bit ~3 Mbit/s net, without any overhead) How much DSP power is needed for decoding? Do I need an embedded system with Analog Devices processor or is i.e. a CortexM4 sufficient? Do I really need DSP power or will be a RasPi adequate in filtering rE/rV and audio quality? I think it's a lot of work to bring this idea into reality. In my thesis I will focus on realtime constraints and if I get that done and working, I will implement some decoding algorithms for different speaker layouts. I would be happy for some replies, thanks in advance, Sven Thebert _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
