A speech pattern recognition system includes sets of radiation modulation members that transmit radiation of two different types and two radiation responsive members each for receiving one of the radiation types. A shutter is supported adjacent each set on a reed having a resonant frequency matched to the frequency of a particular segment of a spoken syllable or word. In the use of the system, the vibrational amplitudes of the shutters control the amount of each type of radiation that is receive...

A process and apparatus is described in which electric signals representative of the sounds emitted from the nose and mouth are utilized to determine the degree of nasality of speech. Separate electric signals are derived from sounds emitted from the nose and mouth and these are compared one to the other and then the resultant signal is compared with a signal representative of a known degree of nasality. A form of apparatus suitable for carrying out the process is disclosed, including means sepa...

A speech recognition method for detecting and recognizing one or more keywords in a continuous audio signal is disclosed. Each keyword is represented by a keyword template representing one or more target patterns, and each target pattern comprises statistics of each of at least one spectrum selected from plural short-term spectra generated according to a predetermined system for processing of the incoming audio. The spectra are processed by a frequency equalization and normalizing method to enha...

A speech recognition method for detecting and recognizing one or more keywords in a continuous audio signal is disclosed. Each keyword is represented by a keyword template representing one or more target patterns, and each target pattern comprises statistics of each of at least one spectrum selected from plural short-term spectra generated according to a predetermined system for processing of the incoming audio. The incoming audio spectra are compared with the target patterns of the keyword temp...

Disclosed is a circuit for determining whether an incoming signal is a speech signal or a data signal. In the preferred embodiment, means for separating the incoming signal into a low frequency component and a high frequency component are provided. The low frequency component consists of frequencies below a specified frequency, namely 1000 Hz. and the high frequency component consists of frequencies above 1000 Hz. Means are also provided for the comparison of the energy level of the high frequen...

A speech recognition system comprising a speech input device an analyzer for analyzing input speech to produce analyzed parameters and a discriminator for recognizing the input speech based on lthe analyzed parameters, has store/matching circuit at an input or output port of the analyzer for adjusting write time and read time. The store-matching circuit acts as a buffer with independent read and write addressing.

A speech recognition method for detecting and recognizing one or more keywords in a continuous audio signal is disclosed. Each keyword is represented by a keyword template representing a plurality of target patterns, and each target pattern comprises statistics of each of a plurality of spectra selected from plural short-term spectra generated according to a predetermined system for processing of the incoming audio. The spectra are processed to enhance the separation between the spectral pattern...

A shock absorber device having a tubular member pivoted at one end and a shaftlike member movable in the tubular member and pivoted at the opposite end, and a cushion seated in the pivoted end of the tubular member and being compressed by the end of the shaftlike member when the body controlled by the shock absorber device is moved to a position causing the shaftlike member to seat on the cushion. The cushion is preferable tubular-shaped and constructed of a plastic material such as polyurethane...

A method and apparatus for processing a signal to extract selected information therefrom is provided. According to the method, an input signal is converted into a sequence of data samples, and these data samples are applied sequentially through a convolver having first and second sections, the output of the first section forming the input of the second section. A data sample in the second convolver section is then compared to each data sample in the first convolver section to produce an output s...

Speech versus music is decided by comparing the presence of pauses greater than 32, 60 and 500 ms in the lower input spectrum, and 4 ms in the higher input spectrum.