(Previously posted in Amateur Radio: https://ham.stackexchange.com/questions/7335/how-does-dab-radio-garbled-noise-come-about )
I've been fascinated by my digital/DAB radio lately, whose placement in my kitchen causes the signal to falter in certain circumstances, producing garbled/burbling/bubbling speech-like noise like this:I want to approximate this effect on live speech.
I wondered if anyone sufficiently knows the ins and outs of digital radio codecs to explain how they lead to the specific sound of these artefacts? Often it sounds kind of like short bursts of different kinds of noise put through a vocoder - I imagine there is some kind of encoding of vocoded/LPC/ATS-style speech data that is received separately from the full frequency signal. So my first attempt will involve random short bursts of noise put through a vocoder - but maybe I could get some clues as to what the nature of the noise should be?