JPH0213980B2 - - Google Patents
Info
- Publication number
- JPH0213980B2 JPH0213980B2 JP58170576A JP17057683A JPH0213980B2 JP H0213980 B2 JPH0213980 B2 JP H0213980B2 JP 58170576 A JP58170576 A JP 58170576A JP 17057683 A JP17057683 A JP 17057683A JP H0213980 B2 JPH0213980 B2 JP H0213980B2
- Authority
- JP
- Japan
- Prior art keywords
- spectrum
- noise
- emphasis
- signal
- circuit
- 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 - Lifetime
Links
- 238000001228 spectrum Methods 0.000 description 54
- 230000005540 biological transmission Effects 0.000 description 38
- 238000000034 method Methods 0.000 description 14
- 230000000873 masking effect Effects 0.000 description 9
- 238000012937 correction Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 230000005284 excitation Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000007796 conventional method Methods 0.000 description 5
- 238000005562 fading Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 210000000056 organ Anatomy 0.000 description 3
- XOFYZVNMUHMLCC-ZPOLXVRWSA-N prednisone Chemical compound O=C1C=C[C@]2(C)[C@H]3C(=O)C[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1 XOFYZVNMUHMLCC-ZPOLXVRWSA-N 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 210000000883 ear external Anatomy 0.000 description 2
- 210000000959 ear middle Anatomy 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002964 excitative effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 210000000697 sensory organ Anatomy 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K1/00—Secret communication
- H04K1/04—Secret communication by frequency scrambling, i.e. by transposing or inverting parts of the frequency band or by inverting the whole band
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17057683A JPS6062756A (ja) | 1983-09-17 | 1983-09-17 | 送受同形エンフアシス反転秘話通信方式 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17057683A JPS6062756A (ja) | 1983-09-17 | 1983-09-17 | 送受同形エンフアシス反転秘話通信方式 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6062756A JPS6062756A (ja) | 1985-04-10 |
| JPH0213980B2 true JPH0213980B2 (no) | 1990-04-05 |
Family
ID=15907393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17057683A Granted JPS6062756A (ja) | 1983-09-17 | 1983-09-17 | 送受同形エンフアシス反転秘話通信方式 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6062756A (no) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2525409Y2 (ja) * | 1991-03-19 | 1997-02-12 | 株式会社田村電機製作所 | 無線電話装置 |
-
1983
- 1983-09-17 JP JP17057683A patent/JPS6062756A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6062756A (ja) | 1985-04-10 |
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