GB1347993A - Sound recording and reporduction - Google Patents
Sound recording and reporductionInfo
- Publication number
- GB1347993A GB1347993A GB1948771A GB1948771A GB1347993A GB 1347993 A GB1347993 A GB 1347993A GB 1948771 A GB1948771 A GB 1948771A GB 1948771 A GB1948771 A GB 1948771A GB 1347993 A GB1347993 A GB 1347993A
- Authority
- GB
- United Kingdom
- Prior art keywords
- information
- channels
- tracks
- signal
- signals
- 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
- 230000010363 phase shift Effects 0.000 abstract 6
- 239000002131 composite material Substances 0.000 abstract 5
- 239000003990 capacitor Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 230000008030 elimination Effects 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 abstract 1
- 230000017105 transposition Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Algebra (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Stereophonic System (AREA)
- Stereo-Broadcasting Methods (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US4422470A | 1970-06-08 | 1970-06-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1347993A true GB1347993A (en) | 1974-02-27 |
Family
ID=21931168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1948771A Expired GB1347993A (en) | 1970-06-08 | 1971-06-08 | Sound recording and reporduction |
Country Status (6)
| Country | Link |
|---|---|
| JP (4) | JPS5017844B1 (https=) |
| BE (1) | BE768242A (https=) |
| CA (1) | CA989743A (https=) |
| FR (1) | FR2094123B1 (https=) |
| GB (1) | GB1347993A (https=) |
| NL (1) | NL161645C (https=) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI3A (fi) * | 1843-11-08 | Pressjäst |
-
1971
- 1971-04-28 CA CA111,590A patent/CA989743A/en not_active Expired
- 1971-05-12 NL NL7106548A patent/NL161645C/xx not_active IP Right Cessation
- 1971-06-07 JP JP46039414A patent/JPS5017844B1/ja active Pending
- 1971-06-08 GB GB1948771A patent/GB1347993A/en not_active Expired
- 1971-06-08 BE BE768242A patent/BE768242A/xx unknown
- 1971-06-08 FR FR7120765A patent/FR2094123B1/fr not_active Expired
-
1974
- 1974-12-28 JP JP305875A patent/JPS5135841B2/ja not_active Expired
- 1974-12-28 JP JP50003057A patent/JPS50132903A/ja active Pending
- 1974-12-28 JP JP753056A patent/JPS5111481B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS50132903A (https=) | 1975-10-21 |
| JPS5135841B2 (https=) | 1976-10-05 |
| NL7106548A (https=) | 1971-12-10 |
| FR2094123A1 (https=) | 1972-02-04 |
| JPS50132904A (https=) | 1975-10-21 |
| DE2126432A1 (de) | 1972-03-02 |
| JPS5017844B1 (https=) | 1975-06-24 |
| NL161645B (nl) | 1979-09-17 |
| BE768242A (fr) | 1971-12-08 |
| NL161645C (nl) | 1980-02-15 |
| FR2094123B1 (https=) | 1976-05-28 |
| CA989743A (en) | 1976-05-25 |
| DE2126432B2 (de) | 1976-02-19 |
| JPS5111481B2 (https=) | 1976-04-12 |
| JPS50132902A (https=) | 1975-10-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |