Electrical audio signal processing systems and devices – Hearing aids – electrical – Specified casing or housing
Patent
1992-03-20
1994-10-04
Fleming, Michael R.
Electrical audio signal processing systems and devices
Hearing aids, electrical
Specified casing or housing
381 41, 381 46, G10L 506
Patent
active
053533763
ABSTRACT:
Systems and methods for improved speech acquisition are disclosed including a plurality of linearly arrayed sensors to detect spoken input and to output signals in response thereto, a beamformer connected to the sensors to cancel a preselected noise portion of the signals to thereby produce a processed signal, and a speech recognition system to recognize the processed signal and to respond thereto. The beamformer may also include an adaptive filter with enable/disable circuitry for selectively training the adaptive filter a predetermined period of time. A highpass filter may also be used to filter a preselected noise portion of the sensed signals before the signals are forwarded to the beamformer. The speech recognition system may include a speaker independent base which is able to be adapted by a predetermined amount of training by a speaker, and which system includes a voice dialer or a speech coder for telecommunication.
REFERENCES:
patent: 3781782 (1973-12-01), Scott et al.
patent: 4893289 (1990-01-01), Greenwood et al.
Claesson et al., "A Multi-DSP Implementation of a Broad-Band Adaptive Beamformer for Use in a Hands-Free Mobile Radio Telephone," IEEE Trans. on Vehicular Tech., vol. 40, No. 1, Feb. 1991, pp. 194-202.
G. Doddington, "Phonetically Sensitive Discriminants for Improved Speech Recognition," Proceedings ICASSP 1989, pp. 556-559.
V. Alvarado, et al., "Experimental Results Showing the Effects of Optimal Spacing Between Elements of a Linear Microphone Array", Proceedings ICASSP 1990, p. 837-840.
M. Goulding, et al., "Speech Enhancement for Mobile Telephony", IEEE Trans. on Vehicular Technology, vol. 39, Nov. 1990, pp. 316-326.
L. Griffiths, et al., "An Alternative Approach to Linearly Constrained Adaptive Beamforming", IEEE Transactions on Antennas and Propagation, vol. AP-30, No. 1, Jan. 1982, pp. 27-34.
Oh Sang G.
Viswanathan Vishu R.
Donaldson Richard L.
Fleming Michael R.
Heiting Leo N.
Kim Richard J.
Swayze W. Daniel
LandOfFree
System and method for improved speech acquisition for hands-free does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for improved speech acquisition for hands-free, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for improved speech acquisition for hands-free will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-588143