I want to lighten my burden when traveling and maybe do a recording. I want to avoid spending much more money on this. So I want to put a few questions on the table.
I can accept to carry the Motu Traveler as the Microphone inputs and the gain controls and level monitoring works well. So I want to build / assemble something low weight and small to add to the MOTU as a pure digital recording device. The MOTU can be configured as a mixer outputting ADAT or dual SPDIF for 4 channels. The Dual SPDIF signals have the eventual advantage of having a choice of 44.1, 48, 96 or 192 kHz sampling rate. So being as unstructured as I am I have a few wild ideas. My first question: - If using 2 USB sound interfaces with spdif inputs, should the audio interfaces not stay in sync as long as the input signals from the MOTU stays in sync? If so, This would make it possible to use 2 low cost USB audio cards with SPDIF inputs? - can this be correct? - Can dual SPDIF inputs be directly added to the RPi? - Can 2 I2S input modules be used http://www.pavouk.org/hw/modulardac/en_dir9001spdif.html and connected to a RPi, would the drivers be difficult to create? or maybe ADAT via I2S? Not so expensive ADAT receiver modules with I2S interface > http://electronics.dantimax.dk/Kits/Digital_audio/11329401182.html > http://www.pcm63.com/?332,adat-receiver-module A very simple recording program or App for 4 channels should be possible to create for the RPi on linux or Android, ardour is overkill. Analog Line in to Zoom H2 from the MOTU feels "not good enough" as it will be AD - DA - AD conversion. A much lower weight solution, but maybe lower quality overall? Have someone created a small circuit to interface the coresound directly to a ZOOM H2? My idea for this would be: - External Battery feed to the ZOOM H2 to redusing internal voltage converter disturbance signals, 6 Volt to the coresound mic, could the Tetramic capsules be directly connected to the H2, maybe a Capacitor needed to isolate DC levels? Currently I have and use this hardware: Coresound tetramic Motu traveler MK3 Large Toshiba A100 portable PC. Zoom H2 - not modified ( yet with 4 line inputs ) use as backup in case of problems with primary system. On Order: Raspberry Pi 2 USB Soundcard with SPDIF input http://www.amazon.com/dp/B000XXY5Q4/ref=pe_175190_21431760_M3T1_SC_3p_dp_1 - Bo-Erik _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
