Analyzing a patient's breathing based on one or more audio signals

A mobile device associated with a microphone and comprising:

• a memory storing instructions;
• and
• a processor configured to access the memory to execute the instructions to at least:
• detect an audio signal associated with a patient's breathing with the microphone for a time period;
• use the audio signal to approximate the patient's respiratory flow for the time period by:
• determining a representation of an audio frequency of the audio signal over the time period, wherein the audio signal comprises a changing amplitude of positive and negative values over the time period,
• splitting the audio frequency of the audio signal over the time period into a plurality of distinct time steps,
• determining points comprising a weighted mean frequency at each of the plurality of distinct time steps,
• applying a frequency-to-flow rate linear transformation at each of the plurality of distinct time steps to approximate respiratory flow versus time for the time period, and
• plotting a graphical representation of the respiratory flow versus time for the time period;
• tag the respiratory flow for the time period with a factor related to the patient;
• save the tagged respiratory flow for the time period in a database for future analysis;
• and
• provide one or more treatment suggestions for the patient's breathing based on the respiratory flow for the time period.