ZA725451B - Controlled delay line signal processor for sound reproduction - Google Patents

Controlled delay line signal processor for sound reproduction

Info

Publication number
ZA725451B
ZA725451B ZA725451A ZA725451A ZA725451B ZA 725451 B ZA725451 B ZA 725451B ZA 725451 A ZA725451 A ZA 725451A ZA 725451 A ZA725451 A ZA 725451A ZA 725451 B ZA725451 B ZA 725451B
Authority
ZA
South Africa
Prior art keywords
signal processor
delay line
line signal
sound reproduction
controlled delay
Prior art date
Application number
ZA725451A
Inventor
M Schiffmann
Original Assignee
Greenberg D
Schiffman M
Cambridge Res & Dev Group
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Greenberg D, Schiffman M, Cambridge Res & Dev Group filed Critical Greenberg D
Publication of ZA725451B publication Critical patent/ZA725451B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/10—Control of transmission; Equalising by pilot signal
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/04—Time compression or expansion
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/26—Time-delay networks
    • H03H11/265—Time-delay networks with adjustable delay
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/30—Time-delay networks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/48—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices
    • H03K4/50—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth voltage is produced across a capacitor
    • H03K4/501—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth voltage is produced across a capacitor the starting point of the flyback period being determined by the amplitude of the voltage across the capacitor, e.g. by a comparator
    • H03K4/502—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth voltage is produced across a capacitor the starting point of the flyback period being determined by the amplitude of the voltage across the capacitor, e.g. by a comparator the capacitor being charged from a constant-current source
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/08—Duration or width modulation ; Duty cycle modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
    • H04B1/662—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission using a time/frequency relationship, e.g. time compression or expansion

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Quality & Reliability (AREA)
  • Computational Linguistics (AREA)
  • Analogue/Digital Conversion (AREA)
ZA725451A 1971-08-13 1972-08-08 Controlled delay line signal processor for sound reproduction ZA725451B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17157171A 1971-08-13 1971-08-13

Publications (1)

Publication Number Publication Date
ZA725451B true ZA725451B (en) 1974-02-27

Family

ID=22624258

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA725451A ZA725451B (en) 1971-08-13 1972-08-08 Controlled delay line signal processor for sound reproduction

Country Status (3)

Country Link
US (1) US3786195A (en)
BR (1) BR7205491D0 (en)
ZA (1) ZA725451B (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3855425A (en) * 1971-10-20 1974-12-17 B Keiser Delay line time compressor and expander
US4207440A (en) * 1976-01-30 1980-06-10 The Vsc Company Dictation recorder with speech-extendable adjustment predetermined playback time
US4149039A (en) * 1976-11-05 1979-04-10 Kokusai Denshin Denwa Co., Ltd. Frequency band compression of FDM using time expansion
USRE31614E (en) * 1979-01-02 1984-06-26 International Business Machines Corporation Decreasing time duration of recorded speech
US4228322A (en) * 1979-01-02 1980-10-14 International Business Machines Corporation Decreasing time duration of recorded speech
US4406001A (en) * 1980-08-18 1983-09-20 The Variable Speech Control Company ("Vsc") Time compression/expansion with synchronized individual pitch correction of separate components
US4415772A (en) * 1981-05-11 1983-11-15 The Variable Speech Control Company ("Vsc") Gapless splicing of pitch altered waveforms
DE3534064A1 (en) * 1984-09-26 1986-04-03 Mitsubishi Denki K.K., Tokio/Tokyo RECEIVER
EP0214343B1 (en) * 1985-09-12 1991-10-02 Sharp Kabushiki Kaisha Reproducing apparatus
US4866647A (en) * 1988-02-04 1989-09-12 American Telephone And Telegraph Company Continuously variable digital delay circuit
EP0427953B1 (en) * 1989-10-06 1996-01-17 Matsushita Electric Industrial Co., Ltd. Apparatus and method for speech rate modification
US6389010B1 (en) 1995-10-05 2002-05-14 Intermec Ip Corp. Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones
US5175769A (en) * 1991-07-23 1992-12-29 Rolm Systems Method for time-scale modification of signals
US5630013A (en) * 1993-01-25 1997-05-13 Matsushita Electric Industrial Co., Ltd. Method of and apparatus for performing time-scale modification of speech signals
US5920842A (en) * 1994-10-12 1999-07-06 Pixel Instruments Signal synchronization
US5758257A (en) * 1994-11-29 1998-05-26 Herz; Frederick System and method for scheduling broadcast of and access to video programs and other data using customer profiles
KR100251497B1 (en) * 1995-09-30 2000-06-01 윤종용 Audio signal reproducing method and the apparatus
US5848130A (en) * 1996-12-31 1998-12-08 At&T Corp System and method for enhanced intelligibility of voice messages
JP2003029794A (en) * 2001-07-17 2003-01-31 Mitsubishi Electric Corp Device and method for reproducing voice
EP1309965B1 (en) * 2000-08-09 2010-12-15 Thomson Licensing Method and system for enabling audio speed conversion
MXPA03001200A (en) * 2000-08-10 2003-06-30 Thomson Licensing Sa System and method for enabling audio speed conversion.
US7683903B2 (en) 2001-12-11 2010-03-23 Enounce, Inc. Management of presentation time in a digital media presentation system with variable rate presentation capability
JP5958341B2 (en) * 2010-10-12 2016-07-27 日本電気株式会社 Signal processing apparatus, signal processing method, and signal processing program
CN111030412B (en) * 2019-12-04 2022-04-29 瑞声科技(新加坡)有限公司 Vibration waveform design method and vibration motor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3093796A (en) * 1959-10-28 1963-06-11 Everett C Westerfield Automatic signal time compressor with gate means for controlling rate of shift register output
US3202769A (en) * 1960-08-02 1965-08-24 Columbia Broadcasting Syst Inc Apparatus for modifying the timing characteristic of a signal
US3278907A (en) * 1964-02-17 1966-10-11 Hughes Aircraft Co Time compressor
US3409736A (en) * 1965-05-17 1968-11-05 Rca Corp Phase and frequency correction system

Also Published As

Publication number Publication date
BR7205491D0 (en) 1973-07-03
US3786195A (en) 1974-01-15

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