According to Soundtrap, you can improve audio quality with a built-in microphone by: • Recording in a quiet environment. Doing so will help you reduce background noise and echo. For instance, you can go inside a closet instead of staying inside a noisy room or get inside a quiet coffee shop rather than interviewing on the street. • Perform a volume test to get the correct recording level. This will help reduce distortion and clipping. • Have the interviewee speak directly into the microphone. Staying near the microphone will help capture more of the speaker's voice and reduce background noise. • Utilize a pop filter to reduce the pops produced by b, p, and other consonants. These pops happen when the speaker is very near the microphone.