Sound capture system for use within sound-generating devices

1. A system, comprising:

a sound capture device configured for placement within a sound-generating device; and

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; and

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 comprises:

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;

wherein the phase shift and attenuator circuit is configured to modify a level of at least one of the amplified first audio signal or the amplified second audio signal so that the amplified first audio signal, as phase-shifted, and the amplified second audio signal have substantially same levels.

2. The system of claim 1 , wherein the sound-generating device is a musical instrument.

3. The system of claim 2 , wherein the musical instrument is a percussion instrument.

4. The system of claim 2 , wherein the sound capture device is moveably suspended within the sound-generating device in at least one of a direction parallel to a plane of a stretched membrane of the musical instrument or in a direction that is perpendicular to the plane of the stretched membrane.

5. The system of claim 1 , wherein the sound capture device and the suspension system are configured to retrofit within the sound-generating device.

6. The system of claim 1 , wherein the suspension system suspends the sound capture device within the sound-generating device so as to avoid physical contact of the sound capture device with an interior surface of the sound-generating device.

7. The system of claim 1 , wherein the sound capture device is encompassed by radio frequency shielding.

8. The system of claim 1 , wherein the sound capture device includes at least one of an inner dust protective layer or an outer dust protective layer.

9. The system of claim 1 , wherein the suspension system includes an adjustable mounting system configured for retrofitting to existing hardware of the sound-generating device, wherein the hardware of the sound-generating device is located within the sound-generating device.

10. The system of claim 1 , comprising:

a diffusor positioned below the sound capture device within the sound-generating device.

11. The system of claim 10 , wherein the diffusor comprises:

a hollow body.

12. The system of claim 11 , wherein the diffusor comprises:

a plurality of prongs extending out from the hollow body, wherein the plurality of prongs are configured to contact an inner surface of the sound-generating device to prevent the hollow body from contacting the inner surface of the sound-generating device.

13. The system of claim 1 , wherein the first transducer and the second transducer are separated by a distance that is greater than or equal to a diameter of an interior diaphragm of the transducer.

14. The system of claim 1 , wherein the first transducer and the second transducer are radio-frequency noise-canceling transducers.

15. The system of claim 1 , wherein: the first transducer is a first humbucking microphone capsule; and the second transducer is a second humbucking microphone capsule.

16. The system of claim 1 , wherein the first transducer and the second transducer are included in a transducer assembly that is suspended within the sound capture device.

17. The system of claim 1 , wherein the first transducer and the second transducer are aligned along an axis forming an angle with a plane of a stretched membrane of the sound-generating device that is greater than 0° and less than 90°.

18. The system of claim 1 , wherein the signal processing circuit includes a processor programmed to initiate executable operations.

19. The system of claim 1 , wherein the signal processing circuit includes a power supply configured provide power to one or more active components of the signal processing circuit, wherein the power supply derives the power from a phantom power source coupled thereto.

20. 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.

21. The system of claim 20 , wherein the signal processing circuit comprises:

an output stage including a transformer configured to generate the output signal.