Sound capture system for use within sound-generating devices

A system, comprising:

• a sound capture device configured for placement within a sound-generating device;
• a suspension system configured to suspend the sound capture device within the sound-generating device;
• wherein the suspension system acoustically decouples the sound capture device from the sound-generating device;
• wherein the sound capture device includes a plurality of transducers configured to generate a plurality of audio signals concurrently from sound generated by the sound-generating device;
• and
• a signal processing circuit configured to receive the plurality of audio signals and generate an output audio signal from the plurality of audio signals, wherein the signal processing circuit includes:
• a preamplifier circuit configured to amplify a first audio signal of the plurality of audio signals generated by a first transducer of the plurality of transducers resulting in an amplified first audio signal and amplify a second audio signal of the plurality of audio signals generated by a second transducer of the plurality of transducers resulting in an amplified second audio signal;
• and
• a phase shift and attenuator circuit coupled to an output of the preamplifier circuit, wherein the phase shift and attenuator circuit is configured to generate a phase-shifted version of the amplified first audio signal by phase shifting a first frequency range of the amplified first audio signal by approximately 180 degrees;
• a difference amplifier circuit configured to sum the phase-shifted version of the amplified first audio signal and a version of the second audio signal as output from the phase shift and attenuator circuit;
• and
• one or more filter circuits coupled to an output of the difference amplifier circuit, wherein the one or more filter circuits include a high-pass filter circuit configured to attenuate frequencies at or below approximately 60 Hz, a high-frequency boost filter circuit configured to increase frequencies between approximately 3 kHz and approximately 10 kHz, and a mid-frequency boost filter circuit configured to increase frequencies approximately within the first frequency range.