초록 ▼

The present invention relates to a sound separating system for separating signals such as intelligible sound, for example, speech, from unwanted noise, such as random noise, when both the noise and the intelligible speech sound are present in an acoustical field and the intelligible speech sound is

The present invention relates to a sound separating system for separating signals such as intelligible sound, for example, speech, from unwanted noise, such as random noise, when both the noise and the intelligible speech sound are present in an acoustical field and the intelligible speech sound is provided from a source located within the acoustical field. The system comprises a first and second sensing transducer located within the field which both pick up both the intelligible speech sound and the noise. Each sensing transducer generates a representative output signal. The two sensing transducer are in close proximity to each other and the intelligible sound is correlated at said first and second sensing means relative to the sound's source.

대표청구항 ▼

[ What is claimed is:] [1.] A sound separating system for separating intelligible sound from unwanted noise wherein both said noise and said intelligible sound are present in an acoustical field into which said intelligible sound is provided from a source located within said acoustical field, said s

[ What is claimed is:] [1.] A sound separating system for separating intelligible sound from unwanted noise wherein both said noise and said intelligible sound are present in an acoustical field into which said intelligible sound is provided from a source located within said acoustical field, said system comprising,at least two sensing means positioned within said acoustical field for picking up said intelligible sound together with said unwanted noise and generating an output signal representative thereof, said at least two sensing means each placed where the intelligible signal is coherent and correlated at every sensing means relative to the source and the unwanted noise is not coherent;signal processing means for separating said intelligible sound from said random noise, and receiving as input a data input signal and a feedback error input signal, the output of one of said sensing means being said data input signal, and for generating an output signal which is computed according to a suitable algorithm, with said output signal from said signal processing means being representative of said intelligible sound separated from said unwanted noise and being split into two identical signals, with the first of said two identical signals being fed to an audio reproducing system;summing means receiving as input the output signal of a different sensing means, which is converted therein into an intelligible signal, and the second of said two identical output signals from said signal processing means, and for generating an output signal representative of the random noise portion of the output signal from said different sensing means, which output signal is fed to said signal processing means as said feedback error input signal, said feedback error input signal being used by said signal processing means for adjusting said output signal from said signal processing means to better effect the separation of said intelligible sound from said random noise.