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Cake day: June 16th, 2023

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  • Radio is referring to the proprietary piece of hardware that is in every cell phone that handles the physical portion of transmitting radio waves for wireless connectivity. This piece of hardware generally handles LTE/5G, wifi, and bluetooth.

    Your IMEI is the identifier that is burned into that hardware, which uniquely lets the carriers determine if your device can authenticate on their networks.

    You can turn off the radio by disabling your cellular network or turning on airplane mode on your phone. You will temporarily lose access to your cellular network until you turn it back on.

    Newer devices don’t require SIM cards to connect. They have eSIM cards that can be used. You still need one or the other to connect to a cellular network.










  • I can think of some commercial audio processors that can help with that, but they are super pricey.

    I can’t think of a linux application that has this capability. If there is something out there that offers AEC (acoustic echo cancellation) on linux with two mic inputs, id also be interested.

    One way to help with this as far as inexpensive hardware is to make sure you’re using cardioid dynamic microphones, and not omnidirectional condenser microphones. Cardioid dynamic mics generally pick up audio directionally, like from the “front”. You have to be right up on the mic in order to have it record any type of audio. They generally wont pick up environmental sound from anything more than a few feet away. You can just point them away from noise you don’t want to pick up.