Abstract: An Enhanced analysis-by-synthesis Waveform Interpolative speech coder able to operate at 4 kbps. Novel features include analysis-by-synthesis quantization of the slowly evolving waveform, analysis-by-synthesis vector quantization of the dispersion phase, a special pitch search for transitions, and switched-predictive analysis-by-synthesis gain vector quantization. Subjective quality tests indicate that it exceeds MPEG-4 at 4 kbps and of G.723.1 at 6.3 kbps.

Abstract: An enhanced analysis-by-synthesis waveform interpolative speech coder able to operate at 2.8 kbps. Novel features include dual-predictive analysis-by-synthesis quantization of the slowly-evolving waveform, efficient parametrization of the rapidly-evolving waveform magnitude, and analysis-by-synthesis vector quantization of the rapidly evolving waveform parameter. Subjective quality tests indicate that it exceeds G.723.1 at 5.3 kbps, and of G.723.1 at 6.3 kbps.

Abstract: Methods and systems for providing automated measurement, adaptation and setup of voice communication system using one or more reference signals. An audio device is automatically configured at or near commencement of establishment of a communications path, such that the configuration is performed in a minimally humanly discernible manner. The methods comprise transmitting one or more predetermined reference signals into an acoustic environment, receiving the transmitted signals from the acoustic environment to thereby provide received signals, and adjusting at least one of a speaker gain and a microphone gain in response to the received signals. Adjustment of audio circuits, such as amplifiers, may be performed based on a signal analysis of the received signals.

Abstract: An enhanced analysis-by-synthesis waveform interpolative speech coder able to operate at 2.8 kbps. Novel features include dual-predictive analysis-by-synthesis quantization of the slowly-evolving waveform, efficient parametrization of the rapidly-evolving waveform magnitude, and analysis-by-synthesis vector quantization of the rapidly evolving waveform parameter. Subjective quality tests indicate that it exceeds G.723.1 at 5.3 kbps, and of G.723.1 at 6.3 kbps.

Abstract: An enhanced analysis-by-synthesis waveform interpolative speech coder able to operate at 2.8 kbps. Novel features include dual-predictive analysis-by-synthesis quantization of the slowly-evolving waveform, efficient parametrization of the rapidly-evolving waveform magnitude, and analysis-by-synthesis vector quantization of the rapidly evolving waveform parameter. Subjective quality tests indicate that it exceeds G.723.1 at 5.3 kbps, and of G.723.1 at 6.3 kbps.

Abstract: Automated interaction systems and methods for use with and/or respond to automated sound-enabled systems, commonly called Interactive Voice Response (IVR) systems. The invented method involves with some or all of the followings; (a) recording information, (b) analyzing signals, (c) initiating and/or participating in communication call, (d) detecting the presence of human individual (instead of IVR system) in the call, (e) signal the caller about such human individual presence, and/or (f) signaling in order to initiate communication and/or call transfer to another destination. This technique can reduce the time spent on, cost involved with, distraction caused by, and need to being put on hold, and/or the need to manually operate or respond to the common IVR systems. The invention can completely or partially release the caller, or assist her/him, during such a process.

Abstract: Encoding/decoding systems and methods for use with data signals representing speech, audio, video, and/or other types of information, including, but not limited, to EKG, surround sound, seismic signals, and others. These systems and methods encode signal parameters into a plurality of frames, each frame having a predetermined number of bits. The encoder encodes signals into frames that are of longer duration than a transmission (or storage) interval, except in cases where signals may be characterized by an axis other than time, such as image or video-coded signals, wherein the encoder codes signals into frames that are larger than the coded segment. When no bits are lost during data transmission (or storage), the decoder uses the received (or retrieved) bits to reconstruct segments having a length equal to the transmission (or storage) interval.

Abstract: Encoding/decoding systems and methods for use with data signals representing speech, audio, video, and/or other types of information, including, but not limited, to EKG, surround sound, seismic signals, and others. These systems and methods encode signal parameters into a plurality of frames, each frame having a predetermined number of bits. The encoder encodes signals into frames that are of longer duration than a transmission (or storage) interval, except in cases where signals may be characterized by an axis other than time, such as image or video-coded signals, wherein the encoder codes signals into frames that are larger than the coded segment. When no bits are lost during data transmission (or storage), the decoder uses the received (or retrieved) bits to reconstruct segments having a length equal to the transmission (or storage) interval.