AT387681B - Verfahren zur erzeugung von sinusfoermigen hoertoenen in einem digitalen fernmeldesystem - Google Patents

Verfahren zur erzeugung von sinusfoermigen hoertoenen in einem digitalen fernmeldesystem

Info

Publication number
AT387681B
AT387681B AT139184A AT139184A AT387681B AT 387681 B AT387681 B AT 387681B AT 139184 A AT139184 A AT 139184A AT 139184 A AT139184 A AT 139184A AT 387681 B AT387681 B AT 387681B
Authority
AT
Austria
Prior art keywords
telecommunication system
shaped high
digital telecommunication
high tones
generating sine
Prior art date
Application number
AT139184A
Other languages
German (de)
English (en)
Other versions
ATA139184A (de
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of ATA139184A publication Critical patent/ATA139184A/de
Application granted granted Critical
Publication of AT387681B publication Critical patent/AT387681B/de

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/02—Digital function generators
    • G06F1/03—Digital function generators working, at least partly, by table look-up
    • G06F1/0321—Waveform generators, i.e. devices for generating periodical functions of time, e.g. direct digital synthesizers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
    • H04Q1/448—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency with conversion of a single frequency signal into a digital signal
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2101/00—Indexing scheme relating to the type of digital function generated
    • G06F2101/04—Trigonometric functions

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)
AT139184A 1983-06-30 1984-04-26 Verfahren zur erzeugung von sinusfoermigen hoertoenen in einem digitalen fernmeldesystem AT387681B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833323608 DE3323608C2 (de) 1983-06-30 1983-06-30 Verfahren zur Unterdrückung von Quantisierungsgeräuschen bei der Übertragung sinusförmiger Hörtöne in einem digitalen Fernmeldesystem

Publications (2)

Publication Number Publication Date
ATA139184A ATA139184A (de) 1988-07-15
AT387681B true AT387681B (de) 1989-02-27

Family

ID=6202800

Family Applications (1)

Application Number Title Priority Date Filing Date
AT139184A AT387681B (de) 1983-06-30 1984-04-26 Verfahren zur erzeugung von sinusfoermigen hoertoenen in einem digitalen fernmeldesystem

Country Status (3)

Country Link
AT (1) AT387681B (no)
CH (1) CH663506A5 (no)
DE (1) DE3323608C2 (no)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61225929A (ja) * 1985-03-30 1986-10-07 Fujitsu Ltd デイジタルト−ンの生成方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2098528A5 (no) * 1970-07-17 1972-03-10 Lannionnais Electronique

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2098528A5 (no) * 1970-07-17 1972-03-10 Lannionnais Electronique

Also Published As

Publication number Publication date
CH663506A5 (de) 1987-12-15
DE3323608A1 (de) 1985-01-17
ATA139184A (de) 1988-07-15
DE3323608C2 (de) 1987-05-14

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee