Patents Examined by E. S. Matt Kemeny
  • Patent number: 4627093
    Abstract: There is disclosed a one-chip speech synthesizer capable of providing synthesized human voices through a new and effective concept of LSI architecture. The synthesizer may execute all of the steps necessary for processing of sample data and enhances the processing speed through a new memory architecture by constructing the one-word length of a control memory (control ROM) longer than the one-word length of a data memory (data ROM). The synthesizer reproduces audible synthesized sounds merely by an added amplifier outside the one-chip LSI semiconductor device without the need to provide a digital-to-analog converter. The LSI device may be used with an expandable external memory as an extension of the data memory (data ROM) whenever a large number of words are to be processed.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: December 2, 1986
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shintaro Hashimoto, Hideo Yoshida
  • Patent number: 4627001
    Abstract: A dictation and editing system includes microphone and keyboard inputs to a programmed computer system. The author may control the selection and entry of microphone and keyboard inputs for storage and display. Keyboard entries are displayed as alpha-numeric or other characters, while recorded speech is displayed simply as a sequence of box-like characters called voice token marks. Each token mark indicates 1 second of speech, and one line of marks represents 60 seconds of speech.
    Type: Grant
    Filed: November 3, 1982
    Date of Patent: December 2, 1986
    Assignee: Wang Laboratories, Inc.
    Inventors: Gary N. Stapleford, Deane C. Osborne
  • Patent number: 4627090
    Abstract: A signal processing device for frequency multiplication of an analog signal by an adjustable multiplication factor. The input analog signal is digitized using a delta modulator and read into a random access memory at a first clock rate. The data is read out of the memory at second clock rate and then converted back to an analog output signal. The multiplication factor is a function of the adjustable ratio of the two clock rates.
    Type: Grant
    Filed: July 19, 1985
    Date of Patent: December 2, 1986
    Assignee: Smith Engineering
    Inventors: Jay Smith, III, Gerald S. Karr
  • Patent number: 4625327
    Abstract: Speech analysis system in which segments of speech are analyzed. For the voiced/unvoiced decision use is made of the average magnitude or waveform intensity of successive speech segments. Basically a voiced decision is made when the waveform intensity increases monotonically over several segments by more than a given factor. An unvoiced decision is made if the waveform intensity drops below a given fraction of the maximum waveform intensity in the current voiced period. Refinements in the decisions are made by the use of fixed and adaptive thresholds.
    Type: Grant
    Filed: April 21, 1983
    Date of Patent: November 25, 1986
    Assignee: U.S. Philips Corporation
    Inventors: Robert J. Sluijter, Hendrik J. Kotmans
  • Patent number: 4625286
    Abstract: Since the formants in human speech move slowly over time, their slow time-varying behavior provides a source of information redundancy which can be used to reduce the required data rate in encoding of speech. In the present invention, speech is encoded by an adaptive tracking procedure, which follows the time-varying behavior of the speech parameters (e.g. the roots of the LPC inverse filter) with a minimum bit rate.A sequence of frames of parameters is segmented into locally-smooth segments which are approximated by higher-order orthogonal functions, and the required best-fit approximation order and coefficients are encoded.
    Type: Grant
    Filed: May 3, 1982
    Date of Patent: November 25, 1986
    Assignee: Texas Instruments Incorporated
    Inventors: Panos E. Papamichalis, George R. Doddington
  • Patent number: 4624009
    Abstract: An improved acoustic signal recognition system, suitable for speech or other acoustic pattern recognition, features data compression of original signal data to reduce requirements for data storage and comparison, as well as reduce recognition errors, the data is compressed by discarding signal spectral samples which do not vary from previously stored spectral samples by a threshold amount, using difference-gating.
    Type: Grant
    Filed: May 2, 1980
    Date of Patent: November 18, 1986
    Assignee: Figgie International, Inc.
    Inventors: James W. Glenn, Joseph C. Brown
  • Patent number: 4624012
    Abstract: Method and apparatus for converting voice characteristics of synthesized speech from a single applied source of synthesized speech in a manner obtaining modified voice characteristics pertaining to the apparent age and/or sex of the speaker. The apparatus is capable of altering the voice characteristics of synthesized speech to obtain modified voice sounds simulating child-like, teenage, adult, aged and sexual preference characteristics by control of vocal track parameters including pitch period, vocal tract model, and speech data rate. A source of synthesized speech having a predetermined pitch period, a predetermined vocal tract model, and a predetermined speech rate is separated into the respective speech parameters. The values of pitch, the speech data frame length, and the speech data rate are then varied in a preselected manner to modify the voice characteristics of the synthesized speech from the source thereof.
    Type: Grant
    Filed: May 6, 1982
    Date of Patent: November 18, 1986
    Assignee: Texas Instruments Incorporated
    Inventors: Kun-Shan Lin, Alva E. Henderson, Gene A. Frantz
  • Patent number: 4624008
    Abstract: An apparatus and method for recognition of sentences comprised of utterances separated by short pauses, the utterances representative of both isolated words and connected words. Speech to be recognized is converted into frames of digital signals. Selected ones of the frames of digital signals are compared with isolated word and connected word templates stored in a template memory. Recognition of isolated words is done by comparing the selected frames of digital signals with the isolated word templates in accordance with a windowed dynamic programming algorithm having path boundary control, while connected word recognition is accomplished by comparing selected frames of digital signals with the connected word templates in accordance with a full DPA having path score normalization and utterance frame penalty calculation capability. Variable frame rate encoding is used to identify the selected frames of digital signals.
    Type: Grant
    Filed: March 9, 1983
    Date of Patent: November 18, 1986
    Assignee: International Telephone and Telegraph Corporation
    Inventors: George Vensko, Lawrence Carlin, Mark W. Nelson, A. Richard Smith
  • Patent number: 4623970
    Abstract: In a talking calculator, a condition memory (F1-F4) causes selection of one kind of voice information sound quality, such as male or female, whereby, for example, a male voice announces positive numbers and a female voice announces negative numbers.
    Type: Grant
    Filed: January 15, 1986
    Date of Patent: November 18, 1986
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shigeru Toyomura
  • Patent number: 4624011
    Abstract: An acoustic signal processing circuit extracts input speech pattern data and subsidiary feature data from an input speech signal. The input speech pattern data comprise frequency spectra, whereas the subsidiary feature data comprise phoneme and acoustic features. These data are then stored in a data buffer memory. The similarity measures between the input speech pattern data stored in the data buffer memory and reference speech pattern data stored in a dictionary memory are computed by a similarity computation circuit. When the largest similarity measure exceeds a first threshold value and when the difference between the largest similarity measure and the second largest measure exceeds a second threshold value, category data of the reference pattern which gives the largest similarity measure is produced by a control circuit to correspond to an input speech.
    Type: Grant
    Filed: January 28, 1983
    Date of Patent: November 18, 1986
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Sadakazu Watanabe, Hidenori Shinoda, Tsuneo Nitta, Yoichi Takebayashi, Shouichi Hirai, Tomio Sakata, Kensuke Uehara, Yasuo Takahashi, Haruo Asada
  • Patent number: 4622690
    Abstract: A signal processing device for frequency multiplication of an analog signal by an adjustable multiplication factor. The input analog signal is digitized using a delta modulator and read into a random access memory at a first clock rate. The data is read out of the memory at second clock rate and then converted back to an analog output signal. The multiplication factor is a function of the adjustable ratio of the two clock rates. Residual noise is minimized by using the circuit slope voltage to trigger a variable pulse width multivibrator which controls switching of charge to a passive integrating circuit.
    Type: Grant
    Filed: July 19, 1985
    Date of Patent: November 11, 1986
    Assignee: Smith Engineering
    Inventors: Jay Smith, III, Gerald S. Karr
  • Patent number: 4620316
    Abstract: 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.
    Type: Grant
    Filed: November 19, 1985
    Date of Patent: October 28, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Toshikazu Yasue, Michihiro Mese, Takeyuki Endo
  • Patent number: 4618936
    Abstract: An electronic cash register system includes an input keyboard and a high-speed computer which outputs through a buffer to a low-speed speech synthesizer. To avoid loss of data due to buffer overfill, a speech condition determination unit generates a control signal if the empty-condition of the buffer falls below a threshold. In one embodiment the control signal speeds up the speech synthesizer clock. In a second embodiment the keyboard is disabled.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: October 21, 1986
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Fusahiro Shiono
  • Patent number: 4618985
    Abstract: A speech synthesizer is disclosed in which instantaneous conversational speech can be produced by an operator. The speech synthesizer comprises a two dimensional input device, such as a joystick or a playing tablet, for producing vowel-like sounds, a plurality of selection keys for producing consonant-like sounds and a third control for varying the pitch or inflection of the produced signal. The electronic circuit for producing the voicing wave forms can be either analog or digital. The system features simultaneous and continuous control of two formants.
    Type: Grant
    Filed: July 22, 1985
    Date of Patent: October 21, 1986
    Inventor: J. David Pfeiffer
  • Patent number: 4618984
    Abstract: Adaptive training of a system for discrete utterance recognition during continuous speech permits single prototype utterances to be adapted to the needs of the talker, during operation, without tedious multiple recitation for training of prototypes. Initial training of the recognition system is by a single utterance (or simulation) of a prototype vocabulary. Operation proceeds, so long as utterances are recognized, until an unrecognized utterance is detected. The system then prompts a choice of prototype vocabulary keyword candidates, which the talker may then choose and utter. The system calculates three recognition distance values as follows:D1--unrecognized utterance vs. prototype vocabulary keyboard candidateD2--prototype vs. prototype vocabulary keyword candidateD3--prototype vs. unrecognized utterance.
    Type: Grant
    Filed: June 8, 1983
    Date of Patent: October 21, 1986
    Assignee: International Business Machines Corporation
    Inventors: Subrata K. Das, Norman R. Dixon
  • Patent number: 4618982
    Abstract: A digitized speech signal is divided into sections and each section is analyzed by the linear prediction method to determine the coefficients of a sound formation model, a sound volume parameter, information concerning voiced or unvoiced excitation and the period of the vocal band base frequency. In order to improve the quality of speech without increasing the data rate, redundance reducing coding of the speech parameters is effected. The coding of the speech parameters is performed in blocks of two or three adjacent speech sections. The parameters of the first speech section are coded in a complete form, and those of the other speech sections in a differential form or in part not at all. The average number of bits required per speech section is reduced to compensate for the increased section rate, so that the overall data rate is not increased.
    Type: Grant
    Filed: September 23, 1982
    Date of Patent: October 21, 1986
    Assignee: Gretag Aktiengesellschaft
    Inventors: Stephan Horvath, Carlo Bernasconi
  • Patent number: 4618983
    Abstract: Speech recognition executes the final matching operation for each characteristic pattern according to the preliminarily selected order prior to the final matching, where any further calculation in reference to such a characteristic pattern is not executed after a specific condition has been satisfied during the matching calculation, and as result, calculation requirements can be drastically minimized so that the speech recognition can eventually be implemented at higher speed and yet under a sharply reduced cost.
    Type: Grant
    Filed: December 22, 1982
    Date of Patent: October 21, 1986
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yoshiki Nishioka, Mitsuhiro Hakaridani, Hiroyuki Iwahashi
  • Patent number: 4613985
    Abstract: A synthesizer is disclosed which has the function of generating synthesized human voices and melodies in the form of synthesized sounds. The speech synthesizer may be implemented with one or more LSI devices which include a central processor unit for receiving word codes or melody program codes and for controlling the synthesizer, a memory for storing the sequence of synthesis for each word and melody, a synthesized word generator for providing audible indications of the respective words in the form of a synthesized sound and a melody generator for providing melodies in the form of a synthesized sound. A decision circuit decides if word codes or melody programs are provided.
    Type: Grant
    Filed: December 22, 1980
    Date of Patent: September 23, 1986
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shintaro Hashimoto, Hideo Yoshida
  • Patent number: 4613944
    Abstract: An electronic translator comprising a first memory for providing signals representing a first word or words in a first language, a second memory for providing signals representing a second word or words in a second language, a first connector selectively occupied by at least one of the first and the second memories, a control device for processing the two types of signals, and carry out operations of the translator, and a second connector selectively occupied by the control device. Preferably, either of the first and the second memories is built into the body of the translator. A second control device may be built into the translator for processing the two types of signals and carrying out operations of the translator, in which case the two control devices are operable in the alternative to the exclusion of each other.
    Type: Grant
    Filed: August 25, 1981
    Date of Patent: September 23, 1986
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shintaro Hashimoto, Masafumi Morimoto, Tosaku Nakanishi, Hideo Yoshida, Shigenobu Yanagiuchi
  • Patent number: 4610022
    Abstract: In a speech transmission or storage system using LPC parameters and a Baseband Signal derived from the prediction error signal, the synthesis excitation signal is formed from the baseband plus high-frequency regeneration, which is then spectrum-flattened for proper synthesis.
    Type: Grant
    Filed: December 14, 1982
    Date of Patent: September 2, 1986
    Assignee: Kokusai Denshin Denwa Co., Ltd.
    Inventors: Seishi Kitayama, Fumihiro Yato, Akira Kurematsu