Hello, I am testing out a doubletalk speech synthesizer, which I have plugged into a ftdi chip USB to serial adaptor. I have the ftdi driver installed. My question is do I have to configure something in terminal to get the echo and or cat command to work? Like do I need to set the speed on my mac to 9600 baud, which is the speed the synthesizer needs? The speed is just an example, pretty sure it is set right. Just wondering is there anything I can do to make the cat and echo commands work? When I try echo and cat now with my synthesizer plugged in I redirect the command to my USB to serial adaptor, on my computer I type cat > /dev/cu.usbserial-FTKVMAFF I don't get any error messages when I run these commands, but I don't get any audio output either. Any help would be appreciated. btw I used a terminal emulator, ckermit, in terminal and was able to get some audio output from my synthesizer. So I am pretty sure that certain things are working i.e. My synthesizer was talking and my USB to serial adaptor is working. But I can't get the echo or cat commands to give audio output.