Agreed, this is the reason I don't really trust the claims here. It's actually much worse if you are using a mobile phone, since the GSM codec will add even mo

Agreed, this is the reason I don't really trust the claims here. It's actually much worse if you are using a mobile phone, since the GSM codec will add even more artefacts before being passed via PSTN to them. Add that to serious background noise and you are giving people to fake way more room than a crystal clear PCM WAV.