EP0660299B1 - Verfahren und Vorrichtung zur Übertragung von Diktaten - Google Patents
Verfahren und Vorrichtung zur Übertragung von Diktaten Download PDFInfo
- Publication number
- EP0660299B1 EP0660299B1 EP94118649A EP94118649A EP0660299B1 EP 0660299 B1 EP0660299 B1 EP 0660299B1 EP 94118649 A EP94118649 A EP 94118649A EP 94118649 A EP94118649 A EP 94118649A EP 0660299 B1 EP0660299 B1 EP 0660299B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- signals
- transmission
- digital memory
- data
- vocoder
- 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
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Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
Definitions
- Portable dictation machines are sometimes equipped with so-called acoustic couplers sold with which it is possible to have a pre-recorded Dictation to the mouthpiece of a telephone handset to couple.
- a dictation can then be made via the telephone line transferred to a recording device at the other end of the connection be where it's recorded. That way it is possible to transfer a dictation to an office while on the move, where it is then played and written by a playback device can be.
- a data compressor system is already known (DE-31 29 155), in which the output signals of a Analog / digital converter immediately processed in real time and the processing results are stored digitally before they are broadcast. With this system must the processing of the digitized signals in real time take place, which means a corresponding effort.
- the invention has for its object a possibility create such dictations, i.e. Limited voice information Duration, at low cost, over the phone transfer to a place where the dictation is then written can be.
- the invention proposes instead to solve the above Task a method with the features of claim 1 and a device with the features of claim 11 and the Features of claim 12. Developments of the invention are the subject of the respective subclaims.
- the dictation is ready edited that information into one for transmission be brought into a more suitable form. Then after complete a quick signal transmission via conversion a telephone connection, with the recording on the other End can be done in reverse.
- Vocoder methods for voice transmission are known. In contrast to the present invention, their aim is however not, voice signals accelerate over a communication link to transmit, but instead, with a the lowest possible bit rate.
- the Speech can be converted immediately since the phone call is online to be led. Therefore, the well-known vocoder must be used work at high speed, which increases requirements the methods used and the hardware used.
- a digital network for transmission is used, for example the one under construction ISDN.
- the invention proposes converting the analog signals in digital data and its storage in real time perform.
- the method can be applied to the Output signals of a dictation machine in playback mode to apply. Then the procedure in conventional Dictation machines can be used. According to the invention be provided, the dictation machine with an increased playback speed operate that to the limit of intelligibility is increased.
- the reverse conversion of the expanded Signals into the analog voice signals in real time he follows.
- the speech signals can then be recorded on a conventional dictation machine from which then writing to tape can be done.
- the device proposed by the invention with the Features of claim 10 is used for transmission while the Receiving device with the features of claim 11 the data transmitted according to the procedure.
- the Receiving device with the features of claim 11 the data transmitted according to the procedure.
- the digital memory and the modem can in this case work in both directions, i.e. both for receiving as also for sending the compressed data.
- the entrance to the Device for connecting a dictation machine is formed.
- a microphone can be formed, optionally also both options can be present at the same time.
- a / D analog / digital converter
- the digital memory has a hard disk or is formed by a hard disk becomes. It is conceivable to cache the hard disk assign. Hard drives are currently available with large storage sizes and fast access time so that the Use of such a known element of the invention is preferred.
- the invention proposes that the device be a processor on which the vocoder runs as a program. Since according to the invention the transfer and compression or decompression realized as staggered processes the program is not subject to a schedule Limitations so that in particular no special processors or particularly fast programs can be used have to.
- the invention proposes the device as an additional device to train for a computer, with only the im Computer not present, needed by the device Components are added, so that the digital memory of the computer and / or the processor of the computer and possibly including the modem built into the computer and its memory can be used.
- the invention proposes the device to assign a switchover device that causes the controller to the digitized uncompressed data via the D / A converter to create the playback device. It can here a very simple, purely software-implemented Act switching device. In this case it is possible the device also as a normal dictation machine use, i.e. with the possibility of direct playback.
- a switching device which Vocoder causes the compressed stored signals after all the speech information has been compressed bypassing the modem as received data. It can then be done after compression and Expansion can be checked using the device like that Voice quality after compression and expansion is. This is particularly advantageous if the device has a possibility, the compression rate and thus the Change transmission speed.
- provision can also be made for a device be that it offers the possibility of choosing whether a dictation at maximum speed or using multiple dictations reduced speed in one transmission process be transmitted.
- the device shown in Fig. 1 in overview an A / D converter 1, which is a known component acts.
- the A / D converter 1 converts at its input a line 2 incoming analog electrical signals in digital information to a line 3 to one Digital memory 4 are delivered.
- the digital memory 4 the digital data are stored in a first area 5, in which the data is treated as a file.
- the digital memory 4 contains a second area 6, which in the simplified diagram with the same size is, but does not have to be the same size.
- Another data line 7 leads from the second area 6 to an output device 8, in which the data in a for the transfer be brought into a suitable form.
- the output device 8 stands over an output line 9 with a Modem 10 in connection.
- Modem 10 is on line 11 connected to a junction box for a telephone network. The actual dial-up connection to the telephone network can be made under program control respectively.
- the device includes a controller 12 which is via control lines with the A / D converter 1, the output device 8 and connected to a device 13 for digital signal processing is.
- the device 13 for digital signal processing reads those contained in the first area 5 of the memory 4 digital data, it is converted using the vocoder method and stores the converted data in the second area 6 of the digital memory.
- the device shown in Fig. 1 operates as follows. On the input line 2 is connected to a dictation machine 14, for example a standard dictation machine. In the A dictated device is inserted and played a discussed tape. Due to the finite length of the ribbon, the Voice information also limited.
- the dictation machine 14 is played at normal or increased playback speed and the initially available data will be analog converted into digital data in the A / D converter 1 in real time and in turn into the first memory area 5 saved.
- a speech pause occurs when the dictation is played on, the controller 12 interrupts the work of the A / D converter 1 until the speech pause has ended.
- the memory area 5 is chosen so large that the one discussed Part of the dictation tape in digitized form in it fits in.
- the controller 12 now begins with the transmission using the modem 10. This runs in the usual way, which is therefore not explained in detail becomes. This voice transmission is now happening as fast as this is possible, the invention to achieve high Transmission speeds use the device preferred on an ISDN network.
- a microphone can be connected.
- the data transferred via the telephone connection arrive now on the receiving side into the device shown in FIG. 2, which a modem 10, an input device 15, a Digital memory 4, a digital / analog converter (D / A) 26 and a device 23 for digital signal processing and contains a control device 12.
- the device of the Fig. 2 is practically a mirror image of that of FIG. 1. Therefore, the individual functional units are not described again.
- the operation of the device of Fig. 2 is as follows. After the connection has been established, the data to be transmitted Receive signals or data in the modem 10 and via the Input device 15 in a first area 16 of the digital memory 4 enrolled. This is how it is registered long how data is transferred. As soon as the last information the transfer is ended.
- the contained in the first area 16 of the digital memory 4 compressed data get under control of the control unit 12 in the device for digital signal processing 13 and are there using the reverse vocoder method expands and in turn in a second area 17 of the Digital memory 4 written.
- Fig. 3 now shows the diagram of a device that the Transmission and reception summarized.
- the device again contains a digital memory 4 which shown in two separate blocks for the sake of clarity but that can be realized as a unit can.
- the device 13 for digital signal processing works with both blocks of the digital memory together.
- the mode of action the device is the same as in the figures 1 and 2.
- a microphone 19 In the direct voice input using a microphone 19 is the 1 mentioned possibility to suppress speech pauses particularly important.
- the control device 12 of the device of FIG. 3, the individual control lines are not shown, still offers following possibility. It makes the facility possible 33 to control digital signal processing so that this after a dictation and its are fully compressed complete storage in the second area 6 of the digital memory 4 treats this area 6 as the area 16 and the compressed data contained there expands again and writes to memory area 17. Then they can go there contained expanded digital signals via the D / A converter 26 and the speaker 20 are output. It is so possible, not only the time required for the conversion measure, but also the quality of the voice information Check compression and expansion without the Information using the modem via the telephone connection is sent. Such a possibility of checking is in particular then of interest when using the device can set and change the compression level.
- the device makes it 3 also possible in real time in the first memory area 5 then stored dictation or also in every pause directly via the D / A converter 26 output the speaker 20. So can the device can be used as a digital dictation machine. Because the readout the memory area from the memory area 5 to the loudspeaker 20 5 does not delete, this can be done after the dictation are transmitted in the manner described.
- the A / D converter 1 and the D / A converter 26 arrange a plug-in card and insert it into the computer. If necessary, a card with the Modem 10 can be used.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Computational Linguistics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Telephonic Communication Services (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Time-Division Multiplex Systems (AREA)
Description
- Fig. 1
- schematisch die Teile einer Vorrichtung zum Übertragen von Sprachinformation mit Hilfe eines erfindungsgemäßen Verfahrens;
- Fig. 2
- in gleicher Darstellung eine Vorrichtung zum Empfangen der übertragenen Sprachinformation;
- Fig. 3
- eine Vorrichtung, die zum Übertragen und Empfangen ausgebildet ist.
Claims (20)
- Verfahren zur Übertragung von Sprache begrenzter Dauer, insbesondere von Diktaten, bei dem die Sprachsignale in analoge elektrische Signale umgewandelt, die analogen elektrischen Signale digitalisiert, die digitalisierten Signale nach dem Vocoder-Prinzip komprimiert, die komprimierten Signale gespeichert werden, und nach Beendigung der Komprimierung der gesamten zu übertragenden Sprachinformation mit der Übertragung der komprimierten Signale über eine Telefonverbindung begonnen wird, dadurch gekennzeichnet, dass die digitalisierten unkomprimierten Signale zumindest wortweise gespeichert werden und dass die Komprimierung mit langsamerer Geschwindigkeit erfolgt als die Digitalisierung und Speicherung der unkomprimierten Signale.
- Verfahren nach Anspruch 1, wobei die Verfahrensschritte des Umwandelns, Digitalisierens und Speicherns in Echtzeitbetrieb durchgeführt werden.
- Verfahren nach Anspruch 1 oder 2, wobei bei Sprachpausen die Digitalisierung und/oder Speicherung der digitalisierten Signale unterbrochen wird.
- Verfahren nach einem der vorhergehenden Ansprüche, wobei die Ausgangssignale eines abspielenden Diktiergeräts als Eingangssignale für die Digitalisierung verwendet werden.
- Verfahren nach einem der vorhergehenden Ansprüche, wobei die Signale über ein digitales Netz übertragen werden.
- Verfahren nach einem der vorhergehenden Ansprüche, wobei die empfangenen Daten bei dem Empfänger in der übertragenen Form digital gespeichert werden, nach vollständiger Übertragung diese beendet wird, die gespeicherten Signale nach dem Vocoder-Prinzip expandiert und die expandierten Signale digital gespeichert werden, und die expandierten Signale in analoge elektrische Signale umgewandelt werden.
- Verfahren nach Anspruch 6, wobei die Expandierung nach Beendigung der Übertragung beginnt.
- Verfahren nach Anspruch 6 oder 7, wobei die Rückumwandlung der expandierten Signale in Echtzeitbetrieb erfolgt.
- Verfahren nach einem der Ansprüche 6 bis 8, wobei die analogen elektrischen Signale auf einem Diktiergerät (14) aufgezeichnet werden.
- Vorrichtung zur Übertragung von Sprache begrenzter Dauer, insbesondere zur Durchführung des Verfahrens nach einem der vorhergehenden Ansprüche, mit einem Eingang für ein analoges Sprachsignal, einem mit dem Eingang verbundenen A/D-Wandler (1), einem Digitalspeicher (4), einem Vocoder (13), der die Daten komprimiert und die komprimierten Daten in einen Bereich (6) des Digitalspeichers (4) schreibt, einem Modem (10), das mit dem Digitalspeicher (4) verbunden ist, sowie einer Steuerung (12), die nach vollständiger Speicherung der komprimierten Daten der gesamten zu übertragenden Sprachinformation das Modem (10) zur Übertragung dieser Daten aus dem Speicherbereich (6) auslöst, dadurch gekennzeichnet, dass der Digitalspeicher (4) mit dem Ausgang des A/D-Wandlers (1) verbunden ist, der Vocoder (13) die unkomprimierten Daten aus einem anderen Bereich (5) des Digitalspeichers (4) herausliest, und dass der Vocoder mit einer langsameren Geschwindigkeit arbeitet als der A/D - Wandler (1).
- Vorrichtung zum Empfangen von übertragener Sprache begrenzter Dauer, insbesondere zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 9, mit einem Modern (10), einem Digitalspeicher (4), der mit dem Modem (10) verbunden ist und die von dem Modem (10) empfangenen Daten in einen ersten Bereich (16) speichert, einem Vocoder (23), der mit dem Digitalspeicher (4) verbunden ist, aus dem ersten Bereich (16) des Digitalspeichers (4) die Daten herausliest und die Daten expandiert, sowie mit einem D/A-Wandler (26), der mit seinem analogen Ausgang mit einer Wiedergabeeinrichtung verbunden ist, dadurch gekennzeichnet, dass der Vocoder (23) die expandierten Daten in einen zweiten Bereich (17) des Digitalspeichers (4) schreibt, der D/A- Wandler (26) mit seinem Eingang mit dem Digitalspeicher (4) verbunden ist, und dass der Vocoder (23) mit einer langsameren Geschwindigkeit arbeitet als der A/D-Wandler.
- Vorrichtung nach Anspruch 10 und Anspruch 11, bei der der Digitalspeicher (4) und/oder das Modem (10) in beiden Richtungen arbeiten.
- Vorrichtung nach Anspruch 10 oder 12, bei der der Eingang zum Anschluß eines Diktiergeräts (14), eines Mikrofons (19) ausgebildet ist.
- Vorrichtung nach einem der Ansprüche 10 bis 13, bei der der Digitalspeicher (4) eine Festplatte aufweist.
- Vorrichtung nach einem der Ansprüche 10 bis 14, bei der der Vocoder (13, 23, 33) als ein auf einem Prozessor ablaufendes Programm verwirklicht ist.
- Vorrichtung nach einem der Ansprüche 11 bis 15, bei der die Expandierung nach Beendigung der Übertragung beginnt.
- Vorrichtung nach einem der Ansprüche 10 bis 16, als Zusatzeinrichtung für einen Computer, wobei der Digitalspeicher (4) und/oder der Prozessor und/oder das Modem (10) des Computers mitbenutzt werden.
- Vorrichtung nach einem der Ansprüche 11 bis 17, mit einer Umschalteinrichtung, die die Steuerung veranlaßt, die digitalisierten unkomprimierten Daten über den D/A-Wandler (26) an die Wiedergabeeinrichtung anzulegen, und/oder die den Vocoder (33) veranlaßt, die komprimierten gespeicherten Signale nach Beendigung der Komprimierung der gesamten Sprachinformation unter Umgehung des Modems (10) als empfangene Daten zu behandeln.
- Vorrichtung nach einem der Ansprüche 11 bis 18, mit einer Einrichtung zum Ändern der Kompressionsrate und der Übertragungsdauer.
- Vorrichtung nach einem der Ansprüche 10 bis 19, mit einer Einrichtung zum wahlweisen Übertragen mehrerer Diktate mit geringerer Geschwindigkeit in einem Übertragungsvorgang.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4342975A DE4342975A1 (de) | 1993-12-16 | 1993-12-16 | Verfahren und Vorrichtung zur Übertragung von Diktaten |
| DE4342975 | 1993-12-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0660299A1 EP0660299A1 (de) | 1995-06-28 |
| EP0660299B1 true EP0660299B1 (de) | 2000-05-17 |
Family
ID=6505218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94118649A Expired - Lifetime EP0660299B1 (de) | 1993-12-16 | 1994-11-26 | Verfahren und Vorrichtung zur Übertragung von Diktaten |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0660299B1 (de) |
| AT (1) | ATE193138T1 (de) |
| DE (2) | DE4342975A1 (de) |
| TW (1) | TW249312B (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19535194B4 (de) * | 1995-09-22 | 2011-01-13 | Deutsche Telekom Ag | Vorrichtung zur gezielten Übertragung von Sprachinformationen |
| JP3235654B2 (ja) * | 1997-11-18 | 2001-12-04 | 日本電気株式会社 | 無線電話装置 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4841299A (en) * | 1987-08-31 | 1989-06-20 | Digital Recording Research Limited Partnership | Method and apparatus for digital encoding and decoding |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4045616A (en) * | 1975-05-23 | 1977-08-30 | Time Data Corporation | Vocoder system |
| US4414536A (en) * | 1980-07-25 | 1983-11-08 | Tokyo Shibaura Denki Kabushiki Kaisha | Data compressing system |
| GB2172127B (en) * | 1985-03-06 | 1988-10-12 | Ferranti Plc | Data compression system |
| US4998243A (en) * | 1989-10-10 | 1991-03-05 | Racal Data Communications Inc. | ISDN terminal adapter with teleconference provision |
-
1993
- 1993-12-16 DE DE4342975A patent/DE4342975A1/de not_active Withdrawn
-
1994
- 1994-02-07 TW TW083101016A patent/TW249312B/zh active
- 1994-11-26 EP EP94118649A patent/EP0660299B1/de not_active Expired - Lifetime
- 1994-11-26 DE DE59409359T patent/DE59409359D1/de not_active Expired - Lifetime
- 1994-11-26 AT AT94118649T patent/ATE193138T1/de not_active IP Right Cessation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4841299A (en) * | 1987-08-31 | 1989-06-20 | Digital Recording Research Limited Partnership | Method and apparatus for digital encoding and decoding |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0660299A1 (de) | 1995-06-28 |
| TW249312B (en) | 1995-06-11 |
| ATE193138T1 (de) | 2000-06-15 |
| DE4342975A1 (de) | 1995-06-22 |
| DE59409359D1 (de) | 2000-06-21 |
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