JPS5942504B2 - 伝送チヤンネルの選択された部分のみの特性を測定する方法および装置 - Google Patents
伝送チヤンネルの選択された部分のみの特性を測定する方法および装置Info
- Publication number
- JPS5942504B2 JPS5942504B2 JP52019401A JP1940177A JPS5942504B2 JP S5942504 B2 JPS5942504 B2 JP S5942504B2 JP 52019401 A JP52019401 A JP 52019401A JP 1940177 A JP1940177 A JP 1940177A JP S5942504 B2 JPS5942504 B2 JP S5942504B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- sound
- test
- received
- 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
Links
- 230000005540 biological transmission Effects 0.000 title claims description 61
- 238000000034 method Methods 0.000 title claims description 43
- 238000012360 testing method Methods 0.000 claims description 255
- 230000005236 sound signal Effects 0.000 claims description 99
- 238000012545 processing Methods 0.000 claims description 48
- 230000004044 response Effects 0.000 claims description 29
- 238000004891 communication Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 15
- 230000002452 interceptive effect Effects 0.000 claims description 9
- 230000003321 amplification Effects 0.000 claims description 8
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims 9
- 238000010998 test method Methods 0.000 claims 3
- 239000002131 composite material Substances 0.000 description 17
- 238000005259 measurement Methods 0.000 description 10
- 230000002238 attenuated effect Effects 0.000 description 6
- 101100216047 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) gla-1 gene Proteins 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000000875 corresponding effect Effects 0.000 description 3
- 230000011664 signaling Effects 0.000 description 3
- 238000011410 subtraction method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/46—Monitoring; Testing
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US000000661106 | 1976-02-25 | ||
| US05/661,106 US4021625A (en) | 1976-02-25 | 1976-02-25 | Instruments and methods for measuring characteristics of only a selected portion of a transmission channel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS52104013A JPS52104013A (en) | 1977-09-01 |
| JPS5942504B2 true JPS5942504B2 (ja) | 1984-10-15 |
Family
ID=24652244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP52019401A Expired JPS5942504B2 (ja) | 1976-02-25 | 1977-02-25 | 伝送チヤンネルの選択された部分のみの特性を測定する方法および装置 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4021625A (show.php) |
| JP (1) | JPS5942504B2 (show.php) |
| CA (1) | CA1065015A (show.php) |
| DE (1) | DE2707586A1 (show.php) |
| FR (1) | FR2342594A1 (show.php) |
| GB (1) | GB1510770A (show.php) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4086448A (en) * | 1977-04-18 | 1978-04-25 | Bell Telephone Laboratories, Incorporated | Loop-around test circuit for telecommunications lines |
| US4271150A (en) * | 1979-03-07 | 1981-06-02 | Zeria-Shinyaku Kogyo Kabushiki Kaisha | Urokinase preparation for oral administration |
| IT1209192B (it) * | 1980-02-18 | 1989-07-16 | Sits Soc It Telecom Siemens | Sistema di misura per elementi del multiplo pam di una centrale elettronica di commutazione per telecomunicazioni. |
| US4317214A (en) * | 1980-07-14 | 1982-02-23 | Attinello John S | Apparatus for simulating interference transmissions |
| JPH04130701U (ja) * | 1991-05-20 | 1992-11-30 | 泉 小林 | 癖毛伸し器 |
| CA2464525C (en) * | 2001-10-24 | 2012-01-10 | Pressure Profile Systems, Inc. | Array sensor electronics |
| US7558686B1 (en) | 2005-12-02 | 2009-07-07 | Veritium Research LLC | Method and apparatus for displaying a representation of a signal |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1869515A (en) * | 1931-12-22 | 1932-08-02 | American Telephone & Telegraph | Measurement of attenuation and noise |
| US3920935A (en) * | 1970-12-21 | 1975-11-18 | Oskar Vierling | Method for measuring the frequency-dependent attenuation of a telecommunications line, especially a two-wire line |
| US3814868A (en) * | 1972-07-12 | 1974-06-04 | F Bradley | Telephone line characteristic measuring instrument |
| US3836735A (en) * | 1972-10-16 | 1974-09-17 | F Bradley | Telephone line characteristic measuring instrument |
-
1976
- 1976-02-25 US US05/661,106 patent/US4021625A/en not_active Expired - Lifetime
-
1977
- 1977-01-17 GB GB1673/77A patent/GB1510770A/en not_active Expired
- 1977-01-31 CA CA270,731A patent/CA1065015A/en not_active Expired
- 1977-02-22 DE DE19772707586 patent/DE2707586A1/de not_active Withdrawn
- 1977-02-25 FR FR7705548A patent/FR2342594A1/fr active Granted
- 1977-02-25 JP JP52019401A patent/JPS5942504B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS52104013A (en) | 1977-09-01 |
| FR2342594B3 (show.php) | 1980-01-11 |
| GB1510770A (en) | 1978-05-17 |
| US4021625A (en) | 1977-05-03 |
| CA1065015A (en) | 1979-10-23 |
| FR2342594A1 (fr) | 1977-09-23 |
| DE2707586A1 (de) | 1977-09-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2150850C (en) | Interference cancellation system employing a polar vector modulator | |
| CN101167273B (zh) | 用于带内光学性能监测的方法及设备 | |
| US3814868A (en) | Telephone line characteristic measuring instrument | |
| CN110971231B (zh) | 结合比率运算的数字锁相放大器 | |
| US11183981B2 (en) | Method of monitoring electrical loads, corresponding circuit, amplifier and audio system | |
| CN106483402A (zh) | 锁相放大器测试结构和方法 | |
| GB2111807A (en) | Noise reduction by integrating frequency-splitted signals with different time constants | |
| JPS5942504B2 (ja) | 伝送チヤンネルの選択された部分のみの特性を測定する方法および装置 | |
| US3927281A (en) | Instrument for measuring harmonic distortion in telephone transmission | |
| US4532442A (en) | Noise reduction in electronic measuring circuits | |
| US4180786A (en) | Impedance-matching circuit using negative low-noise resistance | |
| US7161358B1 (en) | Impedance analyzer | |
| US4061892A (en) | Instruments and methods for measuring characteristics of only a selected portion of a transmission channel | |
| US3836735A (en) | Telephone line characteristic measuring instrument | |
| US6735303B1 (en) | Periodic signal detector | |
| JPH08139527A (ja) | 歪補償回路 | |
| US6724177B2 (en) | Method and apparatus for accurate measurement of communications signals | |
| RU2265231C2 (ru) | Измеритель флуктуаций в проходных высокочастотных устройствах | |
| Scandurra et al. | Multi-channel cross-correlation for increasing sensitivity in voltage noise measurements | |
| JPH055502Y2 (show.php) | ||
| JP2615516B2 (ja) | 非直線性歪率測定装置 | |
| US6154037A (en) | System and method for testing distortion in transformers | |
| Scandurra et al. | Low-frequency spectral estimation (f< 1 Hz) employing PC soundcards | |
| Smither et al. | Common mode interference reduction in seismic recording | |
| SU822071A1 (ru) | Устройство дл преобразовани чАСТОТНО-зАВиСиМыХ НАпР жЕНий |