EP0333249A1 - Dispositif pour mémoriser un signal de parole dans une mémoire digitale - Google Patents

Dispositif pour mémoriser un signal de parole dans une mémoire digitale Download PDF

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Publication number
EP0333249A1
EP0333249A1 EP89200543A EP89200543A EP0333249A1 EP 0333249 A1 EP0333249 A1 EP 0333249A1 EP 89200543 A EP89200543 A EP 89200543A EP 89200543 A EP89200543 A EP 89200543A EP 0333249 A1 EP0333249 A1 EP 0333249A1
Authority
EP
European Patent Office
Prior art keywords
digital
signal
speech
memory
code
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.)
Withdrawn
Application number
EP89200543A
Other languages
German (de)
English (en)
Inventor
Günter Dipl.-Ing. Bierlein (FH)
Helmut Dipl.-Ing. Salbaum (Fh)
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.)
Philips Intellectual Property and Standards GmbH
Koninklijke Philips NV
Original Assignee
Philips Patentverwaltung GmbH
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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 Philips Patentverwaltung GmbH, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Philips Patentverwaltung GmbH
Publication of EP0333249A1 publication Critical patent/EP0333249A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis

Definitions

  • the invention relates to a circuit arrangement for storing a voice signal in a digital voice memory and for reproducing the stored voice signal, with a control circuit which supplies the control commands and clock signals for the individual components of the arrangement, the voice signal being present in one of several predetermined codes.
  • Such circuit arrangements can e.g. be used for the automatic announcement in digital communication networks, in which the message traffic can take place in several predetermined codes.
  • a separate line (highway) is provided for each of these codes in such a network.
  • a description of such a network can be found e.g. in an article by W. Böhm and M. Maisel (Böhm, W. and Maisel, M .: PKI Technische Mitteilungen 1/85, pages 18 to 26, Philips Ltdunikation Industrie AG, Thurn-und-Taxis-Str. 10, D 8500 Nuremberg).
  • DE 29 50 066 A1 discloses a method for storing and reproducing an analog signal, but this is not suitable as the basis for an automatic announcement device for one of the above-mentioned communication networks.
  • the invention has for its object to provide a circuit arrangement of the type mentioned, which is suitable as an announcement device for one of the above-mentioned networks and announcements of significant length can be stored in the digital voice memory.
  • Announcement texts of appreciable length can therefore be stored in the digital voice memory according to the invention because the storage takes place in a preferred code.
  • a code is selected as the preferred code which is particularly well suited for compressed digital voice storage (cf. DE 29 50 066 A1).
  • the control circuit is relieved by the insertion of buffer memories. It only needs to be activated when the buffer tanks have reached a certain level.
  • the code conversion can be carried out in a cost-saving manner if commercially available digital-analog or analog-digital converters are used, which are available for all common digital codes and are characterized by low power loss and small space requirements.
  • the figure shows the basic circuit diagram of an arrangement according to the invention.
  • a control circuit SS is connected to a digital voice memory SP via a data and control bus DB. Clock lines and subordinate control lines are not shown in the figure, since their necessity is obvious to the person skilled in the art and their insertion does not pose any difficulties.
  • Two buffer memories P1 and P2 are also linked to the control circuit SS via the same bus DB. Via an address bus AB, addresses of those memory locations are transmitted from the control circuit SS to the address inputs of the digital voice memory SP which are to be written to or read from.
  • the digital voice memory SS is an EEPROM
  • the buffer memories P1 and P2 are FIFO memories
  • the control circuit is part of a message network mentioned at the beginning.
  • PCM 16 digital controlled delta modulation at 16 kHz; according to DCDM 32).
  • a further form of a speech signal is indicated in the figure, namely the acoustic one. Because of the systematic treatment, this form of the speech signal should also be understood as a code in the present case.
  • a microphone with amplifier then forms an input converter EW3, which converts acoustic signals into analog (electrical), and an amplifier with loudspeaker forms an output converter AW3, which converts analog (electrical) signals into acoustic.
  • Another EW1 input converter converts DCDM 32 signals into analog signals, while an EW2 converter converts PCM signals into analog signals.
  • the inputs of the converters EW1 and EW2 are connected to a signal output of the control circuit SS.
  • the outputs of the three input converters EW1, EW2 and EW3 are routed to the inputs of a multiplexer M1.
  • the multiplexer M1 is controlled by the control circuit SS so that the transcoded and now analog voice signal of the subscriber who wishes to save an announcement text is switched through to the output of the multiplexer M1 if the subscriber's signal is below one of the output signals of the three input converters located.
  • the output signal of the multiplexer M1 is now converted from the analog form into a DCDM 16 signal by a fourth input converter EW4.
  • the DCDM 16 code is the preferred digital code in which a voice signal is written into the digital voice memory SP; this code is also among the codes that a participant of the transmission system can choose for the transmission of its signal. Therefore, the aforementioned signal output of the control circuit SS and the output of the converter EW4 are routed to a second multiplexer M2; in turn, the control circuit SS controls the multiplexer M2 so that the desired signal is present at its output.
  • a serial-parallel converter W1 the DCDM-16 signal is then fed to a FIFO memory P1 (F IRST I N F IRST O UT) and written therefrom, also controlled by the control circuit SS, in the digital voice memory SP.
  • the signal When reading out the announcement texts from the digital voice memory SP, the signal is first buffered in a second FIFO memory P2 and then passes through a parallel-series converter W2. Then it becomes - in the DCDM 16 code - a signal input of the control circuit SS as well as the input of an output converter AW4, which converts the DCDM 16 signal into an analog signal.
  • the output of converter AW4 is connected to the inputs of three further converters, namely the already mentioned electro-acoustic converter AW3, a converter AW2, which converts its analog input signal into a PCM signal, and a converter AW1, which converts its (analog) input signal converts to a DCDM 32 signal.
  • the outputs of the two converters AW1 and AW2 mentioned last are led to two further signal inputs of the control circuit SS.
  • control circuit SS With the help of the control circuit SS, it is ensured that every subscriber, regardless of the code of his voice signals, can get knowledge of the announcement text stored in the digital voice memory SP at any time.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Analogue/Digital Conversion (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Time-Division Multiplex Systems (AREA)
EP89200543A 1988-03-12 1989-03-06 Dispositif pour mémoriser un signal de parole dans une mémoire digitale Withdrawn EP0333249A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3808298 1988-03-12
DE3808298A DE3808298A1 (de) 1988-03-12 1988-03-12 Schaltungsanordnung zur speicherung eines sprachsignals in einem digitalen sprachspeicher

Publications (1)

Publication Number Publication Date
EP0333249A1 true EP0333249A1 (fr) 1989-09-20

Family

ID=6349576

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89200543A Withdrawn EP0333249A1 (fr) 1988-03-12 1989-03-06 Dispositif pour mémoriser un signal de parole dans une mémoire digitale

Country Status (4)

Country Link
US (1) US4964168A (fr)
EP (1) EP0333249A1 (fr)
JP (1) JPH01294298A (fr)
DE (1) DE3808298A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0865187B1 (fr) * 1997-03-11 2006-06-28 Koninklijke Philips Electronics N.V. "Appareil téléphonique comportant un organe de traitement numérique pour les signaux de parole et procédé mis en oeuvre dans un tel appareil".
US6047255A (en) * 1997-12-04 2000-04-04 Nortel Networks Corporation Method and system for producing speech signals

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3846763A (en) * 1974-01-04 1974-11-05 Honeywell Inf Systems Method and apparatus for automatic selection of translators in a data processing system
EP0185445A2 (fr) * 1984-12-17 1986-06-25 VoiceTek Inc Méthode et appareil pour commander l'enregistrement et la reproduction de voix numérique sur des lignes téléphoniques et adapté pour l'usage avec un calculateur hôte quelconque

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2826870A1 (de) * 1978-06-19 1980-01-03 Siemens Ag Halbleitergeraet zur reproduktion akustischer signale
US4330689A (en) * 1980-01-28 1982-05-18 The United States Of America As Represented By The Secretary Of The Navy Multirate digital voice communication processor
US4718087A (en) * 1984-05-11 1988-01-05 Texas Instruments Incorporated Method and system for encoding digital speech information
US4622680A (en) * 1984-10-17 1986-11-11 General Electric Company Hybrid subband coder/decoder method and apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3846763A (en) * 1974-01-04 1974-11-05 Honeywell Inf Systems Method and apparatus for automatic selection of translators in a data processing system
EP0185445A2 (fr) * 1984-12-17 1986-06-25 VoiceTek Inc Méthode et appareil pour commander l'enregistrement et la reproduction de voix numérique sur des lignes téléphoniques et adapté pour l'usage avec un calculateur hôte quelconque

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
N.E.C. RESEARCH AND DEVELOPMENT, SPECIAL ISSUE ON C&C OFFICE SYSTEM, 1985, Seiten 225-235, Tokyo, JP; K. FUJITA et al.: "NEAX2400 information management system (IMS)" *

Also Published As

Publication number Publication date
DE3808298A1 (de) 1989-09-21
US4964168A (en) 1990-10-16
JPH01294298A (ja) 1989-11-28

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