ES405791A1 - Controlled delay line signal processor for sound reproduction - Google Patents

Controlled delay line signal processor for sound reproduction

Info

Publication number
ES405791A1
ES405791A1 ES405791A ES405791A ES405791A1 ES 405791 A1 ES405791 A1 ES 405791A1 ES 405791 A ES405791 A ES 405791A ES 405791 A ES405791 A ES 405791A ES 405791 A1 ES405791 A1 ES 405791A1
Authority
ES
Spain
Prior art keywords
electrical signals
signals
delay
output
frequency components
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
ES405791A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cambridge Research and Development Group
Original Assignee
Cambridge Research and Development 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 Cambridge Research and Development Group filed Critical Cambridge Research and Development Group
Publication of ES405791A1 publication Critical patent/ES405791A1/en
Expired legal-status Critical Current

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
    • 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)
  • Quality & Reliability (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Analogue/Digital Conversion (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Abstract

Treatment apparatus for electrical signals such as those representing the audible coded sounds of the word or the like, said electrical signals being analog representations of said audible sounds with the frequency components of said electrical signals related to a given factor with the frequency components of said audible sounds, characterized by comprising: - a controllable delay device having an input device and an output device, said input device being coupled to a source of said electrical signals to transmit signals from said source to said delay device, and said delay device transmitting the signals containing said output device with a controllable time delay; - means for controlling said delay device with a repetitive variation of said controllable time delay between predetermined delay values, thus progressively delaying the signals when they appear at said outputs to obtain a predetermined frequency transformation of said electrical signals; and - means coupled to said output of said delay device and responding substantially only to the signals of said output having said predetermined frequency transformation to produce a composite output signal representing said electrical signals whose frequency components are substantially altered in said factor to approximate the frequency components of said audible sounds. (Machine-translation by Google Translate, not legally binding)
ES405791A 1971-08-13 1972-08-11 Controlled delay line signal processor for sound reproduction Expired ES405791A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US17157171A 1971-08-13 1971-08-13
US22403572A 1972-02-07 1972-02-07

Publications (1)

Publication Number Publication Date
ES405791A1 true ES405791A1 (en) 1976-05-16

Family

ID=26867208

Family Applications (1)

Application Number Title Priority Date Filing Date
ES405791A Expired ES405791A1 (en) 1971-08-13 1972-08-11 Controlled delay line signal processor for sound reproduction

Country Status (19)

Country Link
JP (1) JPS551596B2 (en)
AR (1) AR201269A1 (en)
AT (1) AT354126B (en)
BE (1) BE787492A (en)
CA (1) CA965014A (en)
CH (1) CH564815A5 (en)
CS (1) CS195258B2 (en)
DD (1) DD100347A5 (en)
DE (1) DE2238136C2 (en)
ES (1) ES405791A1 (en)
FR (1) FR2150067A5 (en)
GB (1) GB1406831A (en)
IL (1) IL40057A (en)
IT (1) IT962099B (en)
LU (1) LU65886A1 (en)
NL (1) NL172200C (en)
PH (1) PH9570A (en)
PL (1) PL95183B1 (en)
SE (1) SE383934B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2217754A2 (en) * 1971-08-13 1974-09-06 Greenberg Sanford Compander for reproducing speech or sound signals
JPS4868641A (en) * 1971-12-17 1973-09-19
JPS51104309A (en) * 1975-03-11 1976-09-16 Matsushita Electric Ind Co Ltd Pitsuchihenkansochi
FR2491703B1 (en) * 1980-10-03 1988-04-29 Thomson Csf COMPRESSION DEVICE AND TEMPORAL DATA DECOMPRESSION DEVICE AND TRANSMISSION SYSTEM COMPRISING AT LEAST ONE OF SUCH DEVICES

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US320269A (en) * 1885-06-16 Vehicle running-gear
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
US3480737A (en) * 1966-03-08 1969-11-25 Cambridge Res & Dev Group Apparatus for reducing time duration of signal reproduction
GB1213818A (en) * 1967-12-04 1970-11-25 Chicago Musical Instr Co Improvements in or relating to conversion of tonal character of aural signals
CH474805A (en) * 1968-08-27 1969-06-30 Ibm Method and circuit arrangement for improving the fundamental tone curve in speech synthesis
US3621150A (en) * 1969-09-17 1971-11-16 Sanders Associates Inc Speech processor for changing voice pitch
JPS55802A (en) * 1978-05-16 1980-01-07 Bulten Kanthal Ab Radiator for heating
US4409736A (en) * 1981-07-31 1983-10-18 The Charles Stark Draper Laboratory, Inc. Null seeking system for remote center compliance device

Also Published As

Publication number Publication date
NL172200B (en) 1983-02-16
SE383934B (en) 1976-04-05
JPS551596B2 (en) 1980-01-16
CA965014A (en) 1975-03-25
FR2150067A5 (en) 1973-03-30
DD100347A5 (en) 1973-09-12
AT354126B (en) 1979-12-27
LU65886A1 (en) 1974-02-12
GB1406831A (en) 1975-10-01
JPS4835703A (en) 1973-05-26
CH564815A5 (en) 1975-07-31
IL40057A (en) 1975-07-28
PH9570A (en) 1976-01-16
NL172200C (en) 1983-07-18
NL7210770A (en) 1973-02-15
IT962099B (en) 1973-12-20
IL40057A0 (en) 1972-10-29
PL95183B1 (en) 1977-09-30
DE2238136A1 (en) 1973-03-01
ATA699872A (en) 1979-05-15
BE787492A (en) 1973-02-12
AR201269A1 (en) 1975-02-28
AU4542572A (en) 1974-02-14
CS195258B2 (en) 1980-01-31
DE2238136C2 (en) 1984-04-19

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