Enhanced detection and analysis of biological acoustic signals

An intestinal audio analysis device comprising:

• a patient interface adapted to attach to a surface of a patient's abdomen;
• a diaphragm adapted to vibrate in response to intestinal sounds to create acoustic pressure waves which amplify the intestinal sounds made within the patient's abdomen;
• an acoustic chamber adapted to receive the acoustic pressure waves caused by diaphragm vibrations which amplify the intestinal sounds;
• a primary audio collection device located in or near the acoustic chamber;
• a secondary audio collection device;
• a user interface comprising a display;
• a housing comprising a computer including a processor configured to receive collected audio data from at least one of the primary audio collection device and the secondary audio collection device and a non-transitory computer-readable storage medium storing instructions comprising one or more algorithms that when executed by the processor cause the processor to perform steps including:
• analyzing the collected audio data from the acoustic pressure waves collected by the primary audio collection device for the false signals due to ambient noise;
• analyzing two or more spectral event values of the collected audio data over time;
• after the analyzing the collected audio data for false signals, producing a slope of a linear regression analysis of the two or more spectral event values of the collected audio data over time;
• and
• comparing the slope of the linear regression analysis to a pre-determined slope threshold,
• wherein one spectral event value of the two or more spectral event values includes predefined signal parameters comprising a frequency in a range of 900 to 20,000 Hertz.