16/44.1 - 16 bits at 44.1 kHz frequency. 16/48 is 16 bits at 48 kHz frequency. Both refers to the sampled but uncompressed, "raw" audio.
192 and 320 usually refers to the bitrate for mp3 compressed audio, which indeed is something different. The mp3 compression removes more and more details from the original audio to fit "inside" this bitrate speed window, hence higher is better because less original content is removed. Only great ears can hear what was removed from a 320 stream.
192 and 320 usually refers to the bitrate for mp3 compressed audio, which indeed is something different. The mp3 compression removes more and more details from the original audio to fit "inside" this bitrate speed window, hence higher is better because less original content is removed. Only great ears can hear what was removed from a 320 stream.