IT1191332B - Silicon nitride based material - Google Patents

Silicon nitride based material

Info

Publication number
IT1191332B
IT1191332B IT84140/85A IT8414085A IT1191332B IT 1191332 B IT1191332 B IT 1191332B IT 84140/85 A IT84140/85 A IT 84140/85A IT 8414085 A IT8414085 A IT 8414085A IT 1191332 B IT1191332 B IT 1191332B
Authority
IT
Italy
Prior art keywords
signal
units
sample
relevant
sign
Prior art date
Application number
IT84140/85A
Other languages
Italian (it)
Other versions
IT8584140A0 (en
Inventor
Gian Nicola Babini
Alida Bellosi
Pietro Vincenzini
Daniele Dalle Fabbriche
Original Assignee
Consiglio Nazionale Ricerche
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 Consiglio Nazionale Ricerche filed Critical Consiglio Nazionale Ricerche
Priority to IT84140/85A priority Critical patent/IT1191332B/en
Publication of IT8584140A0 publication Critical patent/IT8584140A0/en
Application granted granted Critical
Publication of IT1191332B publication Critical patent/IT1191332B/en

Links

Landscapes

  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

An audio signal processor treats a digitally encoded signal. Units (3, 12) sample the encoded signal and units (8, 13) calculate from the sampled values a correlation function relevant to a particular time frame. The function value serves to control an adaptive echo cancellation algorithm. The sampled signal portions are truncated (2, 5) so that only the arithmetic sign bit of each signal portion contributes to the function calculation. An incoming signal sample is initially treated in an extraction block arranged to determine the arithmetic sign relevant to that signal, the resulting sign bits being fed in sequence to a shift register arranged to store a predetermined number of sign bits. Outputs are provided from selected locations in the register in accordance with a control logic select circuit.
IT84140/85A 1985-09-19 1985-09-19 Silicon nitride based material IT1191332B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT84140/85A IT1191332B (en) 1985-09-19 1985-09-19 Silicon nitride based material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT84140/85A IT1191332B (en) 1985-09-19 1985-09-19 Silicon nitride based material

Publications (2)

Publication Number Publication Date
IT8584140A0 IT8584140A0 (en) 1985-09-19
IT1191332B true IT1191332B (en) 1988-03-16

Family

ID=11324655

Family Applications (1)

Application Number Title Priority Date Filing Date
IT84140/85A IT1191332B (en) 1985-09-19 1985-09-19 Silicon nitride based material

Country Status (1)

Country Link
IT (1) IT1191332B (en)

Also Published As

Publication number Publication date
IT8584140A0 (en) 1985-09-19

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