Abstract: Two versions of a flexoelectric apparatus are taught. Both produce electromagnetic fields to aid in the curing of illness in the body. One version, known as a Quantum Coherence Generator, is a flexoelectric harmonic oscillator coil that is driven by natural life sustaining frequencies. The apparatus includes a coherence coil, which is a harmonic oscillator and which has four and half turns, the coil being made from copper wire in the range of sixteen to thirty gauge.

Abstract: A hearing aid apparatus employs a single side band modulator which serves to convert an audio band of frequencies into an upper and lower side band signal. One of the side band signals is filtered and clipped. The clipped side band signal is then demodulated to provide an output audio signal relatively free of undesirable low frequency peaks. The output audio signal is then applied to a compressor amplifier circuit for application to the ear of a handicapped user.

Abstract: A hearing aid apparatus employs a network which varies the frequency response of the aid according to the listening level or the intensity of the audio signal propagating in the environment. A volume controlled amplifier is adjusted by the user via a potentiometer, variation of the potentiometer by the user specifies the center frequency of an active bandpass filter by controlling the impedance of associated FET devices. One FET also serves to vary the compression ratio according to the setting of the potentiometer or volume control to thus enable the user to receive a processed signal which is compensated according to his particular loudness contours.

Abstract: There is disclosed a speech processor for aiding persons with sensorineural hearing loss accompanied by recruitment. The apparatus processes speech into two channels by use of a low pass and a high pass filter. Each channel includes a compressor unit which serves to compress or expand speech according to predetermined frequency sensitive ratios. The outputs of the compressors are combined in a frequency equalizer network to provide a compensated signal which is directed to a hearing aid transducer to enable an improved response for a user. The disclosure also includes a two channel system which may be employed for designing and formulating specific characteristics for hearing aids for the handicapped.

Abstract: There is disclosed apparatus for providing improved hearing acuity in the presence of high intensity background noise, such as that which exists at an industrial site.The apparatus employs an input microphone which is adapted to receive audio information including noise from the environment. The output of the microphone is applied to an expander circuit, which functions to expand the high pass audio frequency band according to the nature and intensity of the noise. In a first mode expansion is provided at a variable ratio and threshold which are selected according to environmental noise. The expanded audio signal is applied to a compressor limiter module to reduce the level and limit the amplitude of the signal within predetermined and safe limits. The compressor limiter output signal is applied to an adjustable low pass filter, which serves further to accommodate the processed signal to a particular user and to limit the frequency range of the output signals.