GB901883A - Improvements in or relating to transmission systems - Google Patents

Improvements in or relating to transmission systems

Info

Publication number
GB901883A
GB901883A GB3107159A GB3107159A GB901883A GB 901883 A GB901883 A GB 901883A GB 3107159 A GB3107159 A GB 3107159A GB 3107159 A GB3107159 A GB 3107159A GB 901883 A GB901883 A GB 901883A
Authority
GB
United Kingdom
Prior art keywords
low
frequencies
delay distortion
distortion
channel
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
GB3107159A
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
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 and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Publication of GB901883A publication Critical patent/GB901883A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H04B1/62—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 providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio
    • H04B1/64—Volume compression or expansion arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

901,883. Companders. SIEMENS & HALSKE A.G. Sept. 11, 1959 [Sept. 12, 1958], No. 31071/59. Drawings to Specification. Class 40 (4). Volume compression and expansion is used at each end of a transmission channel suffering from delay distortion that is more pronounced at high-frequencies than at low frequencies and it is arranged that the side-bands produced by compression of the low-frequency speech signals are made to lie in a region of the channel producing less delay distortion than the region in which the side-bands of the high-frequency speech signals are made to lie. Delay distortion is less acceptable at low frequencies than at high frequencies. Should the system employ pilot control of the compander, the pilot signal is transmitted in the low frequency, low distortion, end of the channel; but should the pilot signal be used for output voltage regulation this is not done.
GB3107159A 1958-09-12 1959-09-11 Improvements in or relating to transmission systems Expired GB901883A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES0059810 1958-09-12

Publications (1)

Publication Number Publication Date
GB901883A true GB901883A (en) 1962-07-25

Family

ID=7493605

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3107159A Expired GB901883A (en) 1958-09-12 1959-09-11 Improvements in or relating to transmission systems

Country Status (3)

Country Link
FR (1) FR1235053A (en)
GB (1) GB901883A (en)
SE (1) SE319529B (en)

Also Published As

Publication number Publication date
SE319529B (en) 1970-01-19
FR1235053A (en) 1960-07-01

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