Audio Data Language?

Question

What are the bandwidth possibilities of (since cell phone companies charge by the mb of data transfer) converting some files to a language translated into mixed but different frequencies. I'm not a genius but grossly simplified would be like 200 Hz for a 0 and 500 Hz for a 1. If you had a phone with an audio input and output then plug these into the sound card on the computer.

computer I/O<---->cell phone<-/\/\/\/\/\->cell phone<---->computer

like that for just a closed data transfer network between 2 comps.

Answer 1

The simple encoding you describe is what is used for 300 baud over land lines. Cell phones have a data connection (9600 for my old GSM phone) and they send voice over that. Once the audio is digitized, its compressed. That compression is optimized for voice. I&#039;m not sure you could get more than 100 characters per second over a cell phone. You also need a protocol for resending data that didn&#039;t wasn&#039;t received properly.

Unless you only need to send a handful of bytes, you would be much better off paying for the data transfer offered by your carrier.