CA1288187C - Dispositif et methode de communication telephonique sans recours aux mains - Google Patents
Dispositif et methode de communication telephonique sans recours aux mainsInfo
- Publication number
- CA1288187C CA1288187C CA000562439A CA562439A CA1288187C CA 1288187 C CA1288187 C CA 1288187C CA 000562439 A CA000562439 A CA 000562439A CA 562439 A CA562439 A CA 562439A CA 1288187 C CA1288187 C CA 1288187C
- Authority
- CA
- Canada
- Prior art keywords
- microphones
- pair
- audio signals
- audio signal
- improvement
- 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
- 238000004891 communication Methods 0.000 title claims abstract description 29
- 230000006854 communication Effects 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000005236 sound signal Effects 0.000 claims abstract description 92
- 230000002452 interceptive effect Effects 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 230000002238 attenuated effect Effects 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000001629 suppression Effects 0.000 claims 1
- 238000000926 separation method Methods 0.000 description 5
- 230000001413 cellular effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006880 cross-coupling reaction Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Landscapes
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000562439A CA1288187C (fr) | 1988-03-25 | 1988-03-25 | Dispositif et methode de communication telephonique sans recours aux mains |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000562439A CA1288187C (fr) | 1988-03-25 | 1988-03-25 | Dispositif et methode de communication telephonique sans recours aux mains |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1288187C true CA1288187C (fr) | 1991-08-27 |
Family
ID=4137722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000562439A Expired - Lifetime CA1288187C (fr) | 1988-03-25 | 1988-03-25 | Dispositif et methode de communication telephonique sans recours aux mains |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1288187C (fr) |
-
1988
- 1988-03-25 CA CA000562439A patent/CA1288187C/fr not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0719493B1 (fr) | Dispositif et procede de reduction de reaction acoustique | |
| US4819263A (en) | Apparatus and method for hands free telephonic communication | |
| CA1288187C (fr) | Dispositif et methode de communication telephonique sans recours aux mains | |
| JPH04223718A (ja) | 自動車通信センタ装置 | |
| JPS59500744A (ja) | オト−ラリンジエアル通信システム | |
| KR200233874Y1 (ko) | 무선 음향출력 송출기 | |
| JP2550336B2 (ja) | 拡声通話回路 | |
| JPS63191447A (ja) | 電子電話機 | |
| JP2568030Y2 (ja) | 電話システム | |
| JPH01232864A (ja) | 拡声電話機 | |
| JPH0328619Y2 (fr) | ||
| JPH02147993U (fr) | ||
| JPH01189264A (ja) | ハンズフリー電話機 | |
| JPH03151746A (ja) | 高齢者用電話機 | |
| JP2550275Y2 (ja) | オーディオ再生通話装置 | |
| JPS62235826A (ja) | エコ−キヤンセル方式 | |
| JPH04361453A (ja) | 拡声電話機 | |
| JPH05252253A (ja) | 電話機 | |
| JPH01269353A (ja) | インターホン装置 | |
| JPS5862957A (ja) | 内線ハンドフリ−応答回路 | |
| JPS6040222B2 (ja) | 無線通信方式 | |
| JPH05315993A (ja) | マイク兼用スピーカーを有する通信方式 | |
| JPS6248162A (ja) | ハンズフリ−電話器 | |
| JPH0321142A (ja) | 無線電話装置 | |
| JPH05268145A (ja) | コードレス電話機 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |