Instruction:

Step 1: Turn off fans and noisy appliances.

Step 2: Drink water and wear mask to prevent spreading.(Keep phone at 10-20cm distance. Avoid coughing directly toward the microphone as it may introduce more noises)

Step 3: Take a deep breath, hit record and cough 4 to 5 times then click Stop.

Step 4: Repeat step 3 if needed then pick the best sound sample and press upload.

Step 5: Store the image result (or take a screenshot of the phone) if needed to.

Thank you.