In this podcast, the producer carefully choose the background sound and the sound of conversation. In the first few minutes, which is the first meeting between interviewer and interviewee, it just records almost any sound we can hear if we are present, the sound of the crash of the forks and plates, the sound of water and the conversation of others. They are daily and normal, adding reality to this media. 

Then they have a rather long conversation, during which the background is very silent, mainly want to emphasize the content of their conversation. After that, they have a cool transition, like a very fast car passing by. Following is the record of a phone call, it is easy to recognize since the noise of the phone call is distinguishable. And the conversation is just clear to be heard under the noise. And then there is a paragraph of speech, like an advertisement and announcement. It is recorded without any noise so it is considered important and need to be heard clearly.