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If it's not off topic, what's your take, as a professional, on the value of a single chip with the ability to record/playback several hundred channels? Are the
by femto 8y ago
If it's not off topic, what's your take, as a professional, on the value of a single chip with the ability to record/playback several hundred channels? Are these a readily available piece of kit, or are they not worth having?
I ask because as part of a student project we've demonstrated a delta-sigma DAC on an FPGA with very good dynamic range. We should be able to put a lot of these onto the one FPGA. It might also be extended to an ADC.
- chaboud 8y agoAs an audio professional, I think you’ll find some interest, but it will be limited. Massive channel count can be useful in beam forming cases (e.g. Shure MXA910 array ceiling panel) or spatialization/impulse-representation cases (e.g. Meyer constellation). I do think that consumer mic array representation could be valuable eventually, but you’re going to need to beat the costs of ADC’s and simple multiplexed front ends. An FPGA is an expensive way to do that at volume (think ASIC). Consider per-channel gain stages for dynamic range enhancement...
- femto 8y agoThanks for the response. Good point on multiplexing, as fast high resolution single/dual channel ADCs are now cheap. It will be interesting to look at how much the multiplexing costs relative to FPGA (which can be quite cheap). At this stage the circuit we have is mostly a curiosity, but it will be interesting to experiment with it.