EP1341398A1 - Système audio portable - Google Patents

Système audio portable Download PDF

Info

Publication number: EP1341398A1
Authority: EP; European Patent Office
Prior art keywords: sound; orientation; transducer; data; orientation data
Prior art date: 2002-02-21
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.): Granted

Application number

EP02003926A

Other languages

German (de)

English (en)

Other versions

EP1341398B1 (fr

Inventor

Roland Dr. Aubauer

Michael Hülskemper

Stefano Ambrosius Dr. Klinke

Frank Lorenz

Christoph Dr. Poerschmann

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Siemens AG

Original Assignee

Siemens AG

Priority date (The priority date 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 date listed.)

2002-02-21

Filing date

2002-02-21

Publication date

2003-09-03

2002-02-21 Application filed by Siemens AG filed Critical Siemens AG

2002-02-21 Priority to AT02003926T priority Critical patent/ATE285163T1/de

2002-02-21 Priority to EP02003926A priority patent/EP1341398B1/fr

2002-02-21 Priority to DE50201769T priority patent/DE50201769D1/de

2002-02-21 Priority to ES02003926T priority patent/ES2234938T3/es

2003-09-03 Publication of EP1341398A1 publication Critical patent/EP1341398A1/fr

2004-12-15 Application granted granted Critical

2004-12-15 Publication of EP1341398B1 publication Critical patent/EP1341398B1/fr

2022-02-21 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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 with a Sound player and at least one sound transducer, the one with the sound player Signal connection is connected.
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.
This task is carried out in the portable mentioned above Sound reproduction device solved in that the Sound reproduction device with sensors for detecting Orientation data about the orientation of the transducer is equipped in the room and that the Sound player, which the orientation data from the Sensors fed out via another signal connection an orientation data comparator for Compare current orientation data with reference data for determining a reorientation of the sound transducer in the room and a control device for controlling a Sound output signal filter due to the sound player a result of the orientation data comparator has so that a virtual Sound source formed by the sound transducer a reorientation of the sound transducer in the room in remains essentially stationary.
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.
a Sound reproduction device a communication terminal, the is suitable for playing sound signals, and a Headphones with two transducers.
Raw sound signals are from the communication terminal
Filtered transfer functions that affect the Orientation of the sound transducers in the room refer to a spatial perception of the sound signals (music) simulate.
the transfer functions are designed that a user of the headphones gets the impression that Sound signals came from a certain position in the room, on which a virtual sound source is arranged.
the communication terminal uses a Orientation data reference sensor a magnetic field, the Field strength is chosen so that three orthogonal coils on Headphones can receive the reference signal as sensors.
the communication terminal is in a substantially fixed distance from the headphones and will for example in a jacket or trouser pocket User of the headphones worn.
reference data are measured sensor values for a predetermined zero position of the Headphones used.
the orientation data and the reference data are the above addressed transfer functions by means of a Control device changed so that the location of the virtual Sound source regardless of a current orientation of the Headphones remains constant.
orientation reference signal transmitter that sends out the reference signal
the reference signal generator is a separate additional device.
headphones should be provided to the play filtered raw sound signals.
one or more optical cameras are provided, for example with a repetition rate of at least 60 Hz
Record image data for a current orientation of the headphones are representative in the room.
the image data of a previous image as reference data are stored 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.
each of the two described embodiments of the Invention is a signal connection for each filtered sound signals and a signal connection for the Sensor signals provided, in the first embodiment the three orthogonal coils and in the second Embodiment the optical cameras the sensors form.
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)
Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Circuit For Audible Band Transducer (AREA)

EP02003926A 2002-02-21 2002-02-21 Système audio portable Expired - Lifetime EP1341398B1 (fr)

Priority Applications (4)

Application Number	Priority Date	Filing Date	Title
AT02003926T ATE285163T1 (de)	2002-02-21	2002-02-21	Tragbare schallwiedergabevorrichtung
EP02003926A EP1341398B1 (fr)	2002-02-21	2002-02-21	Système audio portable
DE50201769T DE50201769D1 (de)	2002-02-21	2002-02-21	Tragbare Schallwiedergabevorrichtung
ES02003926T ES2234938T3 (es)	2002-02-21	2002-02-21	Dispositivo de audio portatil.

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
EP02003926A EP1341398B1 (fr)	2002-02-21	2002-02-21	Système audio portable

Publications (2)

Publication Number	Publication Date
EP1341398A1 true EP1341398A1 (fr)	2003-09-03
EP1341398B1 EP1341398B1 (fr)	2004-12-15

Family

ID=27675630

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP02003926A Expired - Lifetime EP1341398B1 (fr)	2002-02-21	2002-02-21	Système audio portable

Country Status (4)

Country	Link
EP (1)	EP1341398B1 (fr)
AT (1)	ATE285163T1 (fr)
DE (1)	DE50201769D1 (fr)
ES (1)	ES2234938T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP1675432A1 (fr) *	2004-12-27	2006-06-28	Siemens Aktiengesellschaft	Terminal mobile de communication pour la génération d'une source de sons virtuelle spatialement fixe
WO2007004147A2 (fr) *	2005-07-04	2007-01-11	Koninklijke Philips Electronics N.V.	Systeme de reproduction dipole stereo a compensation d'inclinaison
US12003950B2 (en)	2018-03-15	2024-06-04	Microsoft Technology Licensing, Llc	Environmental condition based spatial audio presentation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0465662A1 (fr) *	1990-01-19	1992-01-15	Sony Corporation	Appareil de reproduction de signaux acoustiques
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
WO1999014735A2 (fr) *	1997-09-05	1999-03-25	Manouilov Mikhail Valentinovic	Appareil de reproduction de signaux acoustiques

2002
- 2002-02-21 ES ES02003926T patent/ES2234938T3/es not_active Expired - Lifetime
- 2002-02-21 AT AT02003926T patent/ATE285163T1/de not_active IP Right Cessation
- 2002-02-21 EP EP02003926A patent/EP1341398B1/fr not_active Expired - Lifetime
- 2002-02-21 DE DE50201769T patent/DE50201769D1/de not_active Expired - Lifetime

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0465662A1 (fr) *	1990-01-19	1992-01-15	Sony Corporation	Appareil de reproduction de signaux acoustiques
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
WO1999014735A2 (fr) *	1997-09-05	1999-03-25	Manouilov Mikhail Valentinovic	Appareil de reproduction de signaux acoustiques

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 016, no. 233 (E - 1209) 28 May 1992 (1992-05-28) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP1675432A1 (fr) *	2004-12-27	2006-06-28	Siemens Aktiengesellschaft	Terminal mobile de communication pour la génération d'une source de sons virtuelle spatialement fixe
WO2006069825A1 (fr) *	2004-12-27	2006-07-06	Siemens Aktiengesellschaft	Terminal de communication mobile destine a produire une source sonore virtuelle fixe
WO2007004147A2 (fr) *	2005-07-04	2007-01-11	Koninklijke Philips Electronics N.V.	Systeme de reproduction dipole stereo a compensation d'inclinaison
WO2007004147A3 (fr) *	2005-07-04	2007-05-03	Koninkl Philips Electronics Nv	Systeme de reproduction dipole stereo a compensation d'inclinaison
US12003950B2 (en)	2018-03-15	2024-06-04	Microsoft Technology Licensing, Llc	Environmental condition based spatial audio presentation

Also Published As

Publication number	Publication date
DE50201769D1 (de)	2005-01-20
ES2234938T3 (es)	2005-07-01
EP1341398B1 (fr)	2004-12-15
ATE285163T1 (de)	2005-01-15

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