A friend lent me their Shure PSM300 P3T in-ear monitoring system today. This is a top-of-the-line piece of kit for weekend-warrior type bands, costing over £600 for just one monitor mix.
P3T Half Rack Single Channel Wireless Transmitter | Shure Americas
Turns out that the actual RF signal being transmitted is straightforward analog FM.
A £10 USB TV stick and the free SDR# software Quick Start Guide - rtl-sdr.com can decode the signal and play it out of the sound card output in stereo.
Shure mentions that there is some "24 bit digital" processing - what they call "Patented Shure Audio Reference Companding". The decoded PC signal does sound a bit swooshy compared to the actual Shure receiver unit, so that would suggest it is doing a bit of companding.
P3T Half Rack Single Channel Wireless Transmitter | Shure Americas
Turns out that the actual RF signal being transmitted is straightforward analog FM.
A £10 USB TV stick and the free SDR# software Quick Start Guide - rtl-sdr.com can decode the signal and play it out of the sound card output in stereo.
Shure mentions that there is some "24 bit digital" processing - what they call "Patented Shure Audio Reference Companding". The decoded PC signal does sound a bit swooshy compared to the actual Shure receiver unit, so that would suggest it is doing a bit of companding.
Tuck1s
There are no air digital waves. Waves must be sinusoidal, so analog, but on top of a sinusoidal carrier wave you can transmit zeroes and ones.
There are no air digital waves. Waves must be sinusoidal, so analog, but on top of a sinusoidal carrier wave you can transmit zeroes and ones.
Yes. In the case of the Shure, the baseband signal is analog, rather than being a digital bit-stream.
A Line6 G30 guitar interface, however, uses a digital baseband signal, with a carrier in the 2.4GHz band.
A Line6 G30 guitar interface, however, uses a digital baseband signal, with a carrier in the 2.4GHz band.
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