IT1191307B - Deodorising and disinfecting sheet - Google Patents
Deodorising and disinfecting sheetInfo
- Publication number
- IT1191307B IT1191307B IT12558/85A IT1255885A IT1191307B IT 1191307 B IT1191307 B IT 1191307B IT 12558/85 A IT12558/85 A IT 12558/85A IT 1255885 A IT1255885 A IT 1255885A IT 1191307 B IT1191307 B IT 1191307B
- Authority
- IT
- Italy
- Prior art keywords
- signal
- units
- sample
- relevant
- sign
- Prior art date
Links
- 230000000249 desinfective effect Effects 0.000 title 1
- 230000003044 adaptive effect Effects 0.000 abstract 1
- 238000004364 calculation method Methods 0.000 abstract 1
- 238000005314 correlation function Methods 0.000 abstract 1
- 238000000605 extraction Methods 0.000 abstract 1
- 230000005236 sound signal Effects 0.000 abstract 1
Landscapes
- Electrotherapy Devices (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.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT12558/85A IT1191307B (en) | 1985-08-23 | 1985-08-23 | Deodorising and disinfecting sheet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT12558/85A IT1191307B (en) | 1985-08-23 | 1985-08-23 | Deodorising and disinfecting sheet |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8512558A0 IT8512558A0 (en) | 1985-08-23 |
IT1191307B true IT1191307B (en) | 1988-03-16 |
Family
ID=11141582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT12558/85A IT1191307B (en) | 1985-08-23 | 1985-08-23 | Deodorising and disinfecting sheet |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1191307B (en) |
-
1985
- 1985-08-23 IT IT12558/85A patent/IT1191307B/en active
Also Published As
Publication number | Publication date |
---|---|
IT8512558A0 (en) | 1985-08-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19970626 |