Apparatus, system and method for noise cancellation and communication for incubators and related devices
Systems, apparatuses and methods for integrating adaptive noise cancellation (ANC) with communication features in an enclosure, such as an incubator, bed, and the like. Utilizing one or more error and reference microphones, a controller for a noise cancellation portion reduces noise within a quiet area of the enclosure. Voice communications are provided to allow external voice signals to be transmitted to the enclosure with minimized interference with noise processing. Vocal communications from within the enclosure may be processed to determine certain characteristics/features of the vocal communications. Using these characteristics, certain emotive and/or physiological states may be identified.
1. An enclosure, comprising:
a noise cancellation portion, comprising a controller unit, operatively coupled to one or more error microphones and a reference sensing unit, wherein the controller unit processes signals received from one or more error microphones and reference sensing unit to reduce noise in an area within the enclosure using one or more speakers; and
a communications portion, comprising a sound analyzer and transmitter, wherein the communication portion is operatively coupled to the noise cancellation portion, said communications portion being configured to receive a voice signal from the enclosure and transform the voice signal to identify characteristics thereof.
2. The enclosure of claim 1 , wherein the communications portion is configured to extract features from the voice signal.
3. The enclosure of claim 2 , wherein the features comprise at least one of linear predictive coding (LPC), Mel-frequency cepstral coefficients (MFCC), Bark-frequency cepstral coefficients (BFCC).
4. The enclosure of claim 2 , wherein the communications portion is configured to identify characteristics of the features of voice signal using at least one of a Gaussian mixture model (GMM), hidden Markov model (HMM), and artificial neural network (ANN).
5. The enclosure of claim 1 , wherein the characteristics of the voice signal comprise at least one of an emotional or physiological state.
6. The enclosure of claim 1 , further comprising a voice input operatively coupled to the noise cancellation portion, wherein the voice input is configured to receive external voice signals for reproduction on the one or more speakers.
7. The enclosure of claim 6 , wherein the noise cancellation portion is configured to filter the external voice signals to minimize interference with signals received from one or more error microphones and reference sensing unit for reducing noise in the area within the enclose.
8. A method for providing noise cancellation and communication within an enclosure, comprising:
processing signals, received from one or more error microphones and reference sensing unit, in a controller of a noise cancellation portion to reduce noise in an area within the enclose using one or more speakers;
receiving internal voice signals from the enclosure;
extracting features via transformation from the internal voice signals; and
identifying characteristics of the voice signals based on the transformation.
9. The method of claim 8 , wherein the transformation transforms the voice signal from a time domain to a frequency domain.
10. The method of claim 9 , wherein the features comprise at least one of linear predictive coding (LPC), Mel-frequency cepstral coefficients (MFCC), Bark-frequency cepstral coefficients (BFCC) and short-time zero crossing.
11. The method of claim 9 , wherein characteristic are identified of the transformed voice signal using at least one of a Gaussian mixture model (GMM), hidden Markov model (HMM), and artificial neural network (ANN).
12. The method of claim 8 , wherein the characteristics of the voice signal comprise at least one of an emotional or physiological state.
13. The method of claim 8 , further comprising the step of receiving an external voice signals from the enclosure for reproduction on the one or more speakers within the enclosure.
14. The method of claim 13 , wherein the signals are processed in the noise cancellation portion to filter the external voice signals to minimize interference with the signals received from one or more error microphones and reference sensing unit to reduce noise in the area within the enclose.
15. An enclosure, comprising:
a noise cancellation portion, comprising a controller unit, operatively coupled to one or more error microphones and a reference sensing unit, wherein the controller unit processes signals received from one or more error microphones and reference sensing unit to reduce noise in an area within the enclose using one or more speakers;
a communications portion, comprising a sound analyzer and transmitter, wherein the communication portion is operatively coupled to the noise cancellation portion, said communications portion being configured to receive a voice signal from the enclosure and transform the voice signal to identify characteristics thereof; and
a voice input apparatus operatively coupled to the noise cancellation portion, wherein the voice input apparatus is configured to receive external voice signals for reproduction on the one or more speakers.
16. The enclosure of claim 15 , wherein the communications portion is configured to extract features from the voice signal.
17. The enclosure of claim 16 , wherein the feature comprises at least one of linear predictive coding (LPC), Mel-frequency cepstral coefficients (MFCC), Bark-frequency cepstral coefficients (BFCC) and short-time zero crossing.
18. The enclosure of claim 16 , wherein the communications portion is configured to identify characteristics of the features of the voice signal using at least one of a Gaussian mixture model (GMM), hidden Markov model (HMM), and artificial neural network (ANN).
19. The enclosure of claim 15 , wherein the characteristics of the voice signal comprise at least one of an emotional or physiological state.
20. The enclosure of claim 15 , wherein the noise cancellation portion is configured to filter the external voice signals to minimize interference with signals received from one or more error microphones and reference sensing unit for reducing noise in the area within the enclose.