The audio bit rate is used to increase the audio quality of the transmission.

This is especially noticeable in a more "open" sound. 

The selection of the bitrate can be found in the "Pre session check" under "Select Audio Input".

Please note: 

The setting only affects the audio stream you send out and is therefore only audible to the other side. A high bit rate can lead to audio problems on less powerful computers or sound cards.!!!

You can choose between 64, 128 and 192 kbit/s. 

!!!Only with Google Chrome you can transfer a higher bit rate than 64 kbit/s.!!!