EP1341398B1 - Tragbare Schallwiedergabevorrichtung - Google Patents
Tragbare Schallwiedergabevorrichtung Download PDFInfo
- Publication number
- EP1341398B1 EP1341398B1 EP02003926A EP02003926A EP1341398B1 EP 1341398 B1 EP1341398 B1 EP 1341398B1 EP 02003926 A EP02003926 A EP 02003926A EP 02003926 A EP02003926 A EP 02003926A EP 1341398 B1 EP1341398 B1 EP 1341398B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sound
- orientation
- transducer
- data
- space
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S1/00—Two-channel systems
- H04S1/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
- H04S1/005—For headphones
Definitions
- the invention relates to a portable Sound reproduction device according to the preamble of claim 1.
- Such a portable sound reproduction device is from the WO 99/14735 A2 known.
- the transducer is usually in the form of headphones realized that emits acoustic signals that electrical signals from the sound player assigned.
- the invention is based on the object to create a portable sound reproducer that a spatial perception of a sound source by a Permitted users of the sound reproduction device.
- MP3 players in particular come as sound playback devices and communication terminals that also play sound signals can, in question.
- the portable Sound reproduction device can completely on the in the state the technology provided fixed reference signal transmitter to be dispensed with. Rather, can be required Reference data directly at the sound player are present, so that the control device due to the Reference data and the orientation data from the sensors a current orientation of the head of a user who can use headphones.
- Reference data are data from the sensors, which one correspond to the predetermined zero position of the sound transducer, while the sensors transmit orientation data, the one certain orientation of the transducer in the describe three-dimensional space.
- the reference data can also be used with a predetermined frequency are updated, each relative changes from a previous record to one current record can be found, each Record of a specific orientation of the sound transducer in the Space is assigned. In this way, due to an autocorrelation between the orientation data and the Reference data on a change in the orientation of the Close the transducer in the room.
- the control device for adapting one is preferred a human head related transfer function (“HRTF”, "head related transfer function”) trained the a sound transmission between the virtual sound source and describes the sound pressure of the sound transducer.
- HRTF human head related transfer function
- This transfer function becomes dependent on the results adapted to the orientation data comparison device, that the virtual sound source for a user of the portable sound reproducer essentially remains stationary.
- the sound reproducing device can be an orientation reference signal transmitter have that in one essentially constant distance from the sound transducer is arranged, the sensors for detecting components of a Reference signal can be designed as the orientation data can.
- the reference signal generator can be, for example Generate magnetic field, its three spatial components of three suitably arranged sensors can be detected. The so Orientation data determined can then be used for a Zero position of the sound transducer representative reference data be compared to a current orientation of the Determine sound transducer in the room.
- the orientation reference signal transmitter can for example in the Sound playback device can be integrated. However, it is also possible that he's near the at least one Sound transducer is arranged. It is only essential that he follow a translational movement of the least a sound transducer is arranged in the room.
- the orientation reference signal transmitter to the at least one sound transducer is arranged adjacent, can the sensors for the orientation data at the Sound player are located.
- orientation reference signal generator is used for a Embodiment in a communication terminal with associated Integrated antenna, its reference signals can be via the standard antenna are broadcast, whereby then the sensors for acquiring orientation data the transducer will be located.
- the orientation reference signal transmitter is preferably in the Integrated player.
- At least one optical camera for continuous acquisition of current image data than that Orientation data is provided to follow a Reorientation of the sound transducer in the room is appropriate.
- the optical camera can, for example, directly on a Be attached to the transducer and continuously images one at least partially stationary environment of a user of the Record sound reproduction device. Based on recorded image signals can change the orientation of the Sound transducer can be determined in the room. By comparison or Autocorrelation between current image data as Orientation data and previous image data as Reference data can this reorientation of Sound transducer can be detected in the room.
- There are Transfer functions for filtering raw sound signals from the communication terminal provided as a filter for the Raw sound signals are used.
- Headphones should be provided to the filtered raw sound signals play. There are one on these headphones or several optical cameras are provided, for example with a repetition rate of at least 60 Hz image data record that for a current orientation of the headphones are representative in the room.
- the image data of a previous image as reference data are in a Orientation data comparison device with a current one Image consisting of orientation data compared.
- the Result of the comparison or an autocorrelation between the previous and the current image concludes about the current orientation of the headphones in the Space, so that, as already explained above, an adjustment of the Transfer functions via a control device of the Communication terminal can be made.
- CMOS cameras can be used for the optical cameras are used, which are very small and inexpensive, so that the sound reproducing device with little effort can be produced.
- the invention is not based on the Use with communication terminals as Sound players is limited. Rather come any portable sound player as a component the sound reproduction device according to the invention, the one with a control device and one Comparison device can be equipped according to the invention can.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Stereophonic System (AREA)
- Circuit For Audible Band Transducer (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Description
Claims (4)
- Tragbare Schallwiedergabevorrichtung mit einer Schallabspieleinrichtung und mindestens einem Schallwandler, der mit der Schallabspieleinrichtung über eine Signalverbindung verbunden ist,
wobei
die Schallwiedergabevorrichtung mit Sensoren zum Erfassen von Orientierungsdaten über die Orientierung des Schallwandlers im Raum ausgestattet ist und
dass die Schallabspieleinrichtung, der die Orientierungsdaten von den Sensoren aus über eine weitere Signalverbindung zugeleitet werden, eine Orientierungsdaten-Vergleichseinrichtung zum Vergleichen aktueller Orientierungsdaten mit Referenzdaten zum Bestimmen einer Umorientierung des Schallwandlers im Raum und eine Steuereinrichtung zum Steuern eines Schallausgabesignalfilters des Schallabspielgerätes aufgrund eines Ergebnisses der Orientierungsdaten-Vergleichseinrichtung aufweist,
dadurch gekennzeichnet, dass
die Steuereinrichtung derart ausgebildet ist, dass eine virtuelle Schallquelle, die von dem Schallwandler gebildet wird, bei einer Umorientierung des Schallwandlers im Raum im wesentlichen ortsfest bleibt und
dass mindestens eine optische Kamera zum fortlaufenden Erfassen aktueller Bilddaten als die Orientierungsdaten vorgesehen ist, die zum Folgen einer Umorientierung des Schallwandlers im Raum angebracht ist. - Schallwiedergabevorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass die Steuereinrichtung zum Anpassen einer auf einen menschlichen Kopf bezogenen Übertragungsfunktion ("HRTF", "head related transfer function") ausgebildet ist, die eine Schallübertragung zwischen der virtuellen Schallquelle und dem Schalldruck des Schallwandlers beschreibt. - Schallwiedergabevorrichtung nach einem der Ansprüche 1 oder 2,
dadurch gekennzeichnet, dass sie einen Orientierungs-Referenzsignalgeber aufweist, der in einem in wesentlichen gleichbleibenden Abstand zu dem Schallwandler angeordnet ist, und die Sensoren zum Erfassen von Komponenten eines Referenzsignals als die Orientierungsdaten ausgebildet sind. - Schallwiedergabevorrichtung nach Anspruch 3,
dadurch gekennzeichnet, dass der Orientierungs-Referenzsignalgeber in das Schallabspielgerät integriert ist.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02003926A EP1341398B1 (de) | 2002-02-21 | 2002-02-21 | Tragbare Schallwiedergabevorrichtung |
AT02003926T ATE285163T1 (de) | 2002-02-21 | 2002-02-21 | Tragbare schallwiedergabevorrichtung |
ES02003926T ES2234938T3 (es) | 2002-02-21 | 2002-02-21 | Dispositivo de audio portatil. |
DE50201769T DE50201769D1 (de) | 2002-02-21 | 2002-02-21 | Tragbare Schallwiedergabevorrichtung |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02003926A EP1341398B1 (de) | 2002-02-21 | 2002-02-21 | Tragbare Schallwiedergabevorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1341398A1 EP1341398A1 (de) | 2003-09-03 |
EP1341398B1 true EP1341398B1 (de) | 2004-12-15 |
Family
ID=27675630
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02003926A Expired - Lifetime EP1341398B1 (de) | 2002-02-21 | 2002-02-21 | Tragbare Schallwiedergabevorrichtung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1341398B1 (de) |
AT (1) | ATE285163T1 (de) |
DE (1) | DE50201769D1 (de) |
ES (1) | ES2234938T3 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1675432A1 (de) * | 2004-12-27 | 2006-06-28 | Siemens Aktiengesellschaft | Mobiles Kommunikationsendgerät zum Erzeugen einer ortsfesten virtuellen Schallquelle |
WO2007004147A2 (en) * | 2005-07-04 | 2007-01-11 | Koninklijke Philips Electronics N.V. | Stereo dipole reproduction system with tilt compensation. |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU648773B2 (en) * | 1990-01-19 | 1994-05-05 | Sony Corporation | Apparatus for reproduction apparatus |
JPH0444500A (ja) * | 1990-06-11 | 1992-02-14 | Yamaha Corp | ヘッドホンシステム |
US5146501A (en) * | 1991-03-11 | 1992-09-08 | Donald Spector | Altitude-sensitive portable stereo sound set for dancers |
RU2109412C1 (ru) * | 1997-09-05 | 1998-04-20 | Михаил Валентинович Мануилов | Система для воспроизведения акустического стереосигнала |
-
2002
- 2002-02-21 DE DE50201769T patent/DE50201769D1/de not_active Expired - Lifetime
- 2002-02-21 AT AT02003926T patent/ATE285163T1/de not_active IP Right Cessation
- 2002-02-21 EP EP02003926A patent/EP1341398B1/de not_active Expired - Lifetime
- 2002-02-21 ES ES02003926T patent/ES2234938T3/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ATE285163T1 (de) | 2005-01-15 |
DE50201769D1 (de) | 2005-01-20 |
ES2234938T3 (es) | 2005-07-01 |
EP1341398A1 (de) | 2003-09-03 |
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