DE102009019406B3 - Apparatus and method for listening - Google Patents

Abstract

The invention relates to a device (6) and a method (54) for acoustically monitoring at least one listening sector (34) which is located in a monitoring plane UE which can be monitored by means of a sonar system. The sonar system has a receiving antenna (38) with a multiplicity of water sound pickups (40), wherein water sound signals can be recorded by means of the receiving antenna (38) and reception signals can be generated from the water sound signals. The sonar system also has a direction generator (8) and an audio signal processing unit (10), by means of which a hearing signal (60) acoustically reproducing the listening system (42) can be generated together from the received signals. The device (6) has a main alignment setting means (23) by means of which a main guide (44) located in the monitoring plane UE can be adjusted by pivoting in relation to an antenna-fixed reference direction BR. According to the invention, the device (6) has a viewing direction detection means (12) by means of which a viewing direction (16) of an eye (14) or the eyes of an operator (4) can be detected. In addition, the main-axis adjusting means (23) is formed such that the main-directional means (44) can be adjusted in accordance with the detected viewing direction (16) by means of the main-axis adjusting means (23), so that the invention can easily adjust the main-horizontal direction (44) Bearing angle ...

Description

The The invention relates to a device and a method for Horchpeilung by means of acoustic monitoring at least one Horchsektors in a monitorable by a sonar facility monitoring level is, according to the preamble of claim 1 and 8, respectively.

A conventional Sonar system is used to locate underwater objects. A location by means of passive sonar is possible if the object has a noise source is or has, which emits receivable from the sonar system Wasserschallsignale. When the sonar is active, water sound signals are directed towards an object sent, reflected from the object and subsequently by means of the Sonar system received.

To the Reception of the water sound signals, the conventional sonar system at least a receiving antenna with a large number of hydrophones, For example, electroacoustic transducers, on, in response on received water sound signals or water sound waves electrical Generate received signals and provide a direction generator.

Of the Directional generator of the known sonar system generates directional signals from the received signals of the Wasserschallaufnehmer by the Receive signals for delayed several main receiving directions depending on the transducer location and to Group signals or the direction signals summarized. Each Direction signal is therefore assigned to a main receiving direction.

The Main receiving direction points in the direction of the reception maximum of Main lobe of a directional characteristic of the sonar system. At a horizontally oriented receiving antenna denotes the main receiving direction a bearing angle in the horizontal plane.

The Direction signals provided by the direction generator are usually - after another Signal processing - one Display means for visual representation provided on the Directional signals are influenced according to their sound level. When the directional characteristic is on an object or a sound source indicates that the received sound level is greater than the sound levels of adjacent ones Directional characteristics.

Further the known sonar system has an audio signal processing unit which generates a mono audio signal from a directional signal. All directional signals are put together by the monitoring level which can be monitored by means of the sonar system while the direction signal used to form the audio signal or the main receiving direction associated with the directional signal indeed monitored acoustically Listening sector. The Horchsektor is thus using the mono audio signal imaged acoustically, with a spatial resolution or bearing within of the listening sector in the mono audio signal not possible is.

Out US 6,885,612 B2 and DE 15 668 57 A Devices are known which generate a stereo audio signal from a plurality of directional signals by means of suitable signal processing. The listening sector or the monitoring level is acoustically imaged by means of the stereo audio signal such that a spatial resolution or bearing within the listening sector or within the monitoring plane is possible. Means or methods for adjusting the Horchsektors do not show these known devices.

at the o. g. known Sonaranlage a device is provided, which has a Haupthorchrichtungseinstellmittel, by means of a Haupthorchrichtung lying in the listening sector by panning across from an antenna fixed reference direction is adjustable. If at this known Sonaranlage only one direction signal determines the listening sector and thus audible is made, the Haupthorchrichtung is identical to that in the Horch sector lying main receiving direction.

The known Haupthorchrichtungseinstellmittel is a trackball, the can be rotated by an operator, with the Haupthorchrichtung shifts or successively the different main receiving directions Assigned signals acoustically, for example. By means of a headphone reproduced can be. By listening to Sound levels of adjacent directional characteristics can thus a noise source be swept.

Of the Trackball for adjusting the bearing angle is in known sonar systems often for further purposes, in particular for setting further parameters, used. It therefore has to work in different ways of the trackball, which is time consuming and complicated. About that In addition, it is time consuming, by means of the trackball in succession set comparatively far apart main horns, because the trackball for this relatively far, the operator may have to several times his hand must use the trackball implement. Finally obstructed the mass of trackball a fast and precise navigation between different Horch main directions.

The invention is therefore based on the object, adjusting the Haupthorchrichtung improve.

The Invention solves This object with a device according to claim 1 and with a Method according to claim 8.

The Invention has recognized that adjusting the Haupthorchrichtung simplified with a device having a viewing direction detection means, by means of a viewing direction, in particular main viewing direction, one or both eyes of an operator is detectable, and at the main body adjusting means is formed such that that is, by means of the main alignment means, the main guide dependent on is adjustable from the detected viewing direction.

The Invention takes advantage of the fact that the operator's gaze swivel quickly and very precisely focus on one goal. It usually does not do that or little difference, whether the line of sight to a neighboring or more distant target is pivoted. A swivel the viewing direction to a more distant destination causes while pivoting the Haupthorchrichtung to a farther away Main listening direction. Consequently, the operator can use the sight-direction detection means and of the main alignment adjusting means has an adjacent main guide essentially as fast as a farther distant main direction. In any case, quick, easy and precise setting the Haupthorchrichtung possible.

The Viewing direction detection means is for example a so-called eye tracker, which is preferably arranged stationary relative to the sonar system, alternatively, however, also on the head of the operator or on one of his Head-worn device can be fixed. In the latter case It is beneficial to have an image on the targets by capturing the line of sight selected to project onto the operator's retina and additionally to the viewing direction a position and orientation of the head in space to capture in which a goal is fixed.

Especially when the viewing direction detection means is stationary in space, the gaze direction detection means first needs the eye or eyes of the operator to capture on the basis of details of the eye, such as the Pupil position to be able to determine the viewing direction. Either is the viewing direction detection means or the Eye-Tracker here Targeted to the operator's eye and becomes active in its orientation readjusted when the operator changes his position in the room. alternative or in addition will an area larger than the eye of the operator is optically captured and by image processing means first the eye in the detected area and then the line of sight detected.

Preferably a set Haupthorchrichtung is not adjusted in any case, if the sight line detection means changes the line of sight of Operator detected. The operator should have the opportunity, his gaze to focus on other things without the main direction adjusted. Therefore, it can be provided that the Haupthorchrichtung can only be reset if at the same time another operating element, For example, a button is pressed.

alternative can by means of the viewing direction detection means and / or means of the main alignment adjusting means, a pattern is detected after the viewing direction changes or does not change in a given time and / or is directed to a particular destination, the device only in In response to such a known pattern, the main orchestration re-sets. For example, the operator causes the adjustment a new Horchrichtung, after he had his eyes for a predetermined Time has been directed to a specific goal by following directs its direction towards a given confirmation goal or after blinking a particular pattern or letting his gaze wander. alternative can the longer Fix a target to set the main direction and a simultaneous or subsequent confirmation or input omitted.

To the Adjusting the main guide controls the main cursor setting means the direction generator and / or the audio signal processing unit suitable for. The sonar system can do more than a direction generator and / or more than one audio signal processing unit, so that the invention is not limited to use in sonar systems with only a single directional or a single audio signal processing unit is limited. If the sonar system according to the claims "a" directional or "an" audio signal processing unit Thus, "one" or "one" is thus not as a number word but as an indefinite article to understand.

All in all allows the invention is a fast and less complex targeting different in the water befindlicher objects or sound sources. The operator does not need his hands for the Use setting the main horn and therefore has his hands for others Tasks free. The trackball can also be used for other tasks become.

Advantageously, the device has a optical display means on which the monitoring plane can be at least partially optically imaged. The visual display means is for example a monitor, screen or display. Alternatively, the display means may comprise a plurality of monitors, screens or displays, which are preferably arranged side by side and / or one above the other and are part of a console or form this console.

The Device is designed such that a the direction of view crossing viewing position are detected on the display means can. For example, objects or noise sources are on the display means assigned symbols in chronological order above that to the respective object belonging Bearing angle applied. In this case, the goal may be the line of sight or a viewing position such a displayed on the display means Be symbol. The viewing direction crosses the display means in this viewpoint. The gaze position is determined by means of the gaze direction detection means detected. In response to this, especially after an affirmative Input, the main cursor setting means sets the listening direction, which is shown on this viewing position on the display means, as new main orchard. Thus, for example, everyone in the surveillance sector located noise sources on the display means automatically, for example in the form of symbols, are displayed. The operator can quickly by means of the invention and purposefully aim the symbols with his gaze, thereby select a listening sector and then listen specifically to the audio signals that the direction generator together with the audio signal processing unit for the thus selected Providing the main orchestration.

Preferably is on the display means representing the Haupthorchrichtung Audio Peilzeiger shown. The operator can thus recognize at which bearing angle the Haupthorchrichtung just set is or where the Haupthorchrichtung relative to displayed on the display means Objects is located. The audio Peilzeiger can, for example graphically symbolized by a dash. Alternatively or In addition, as Audio Peilzeiger the illustrations or symbols in the Haupthorchrichtung Ob jects graphically, for example, by a certain Color or its environment, for example, also by a certain Color, be highlighted.

In An advantageous embodiment of the invention is the audio signal a, in particular binaural, stereo audio signal that has a Stereo Headphones can be reproduced and spans an acoustic imaging plane, the listening sector being at a level in the image plane acoustic imaging sector is mapped.

Of the the stereo headphone supporting operator therefore receives a direction information via the stereo audio signal the noise sources within the selected Horch sector. For example, a signal of a noise source passes delayed on the right ear of the operator when the noise source to the left of the main horn in the listening sector. through this listening can several objects in the listening sector not only from each other be differentiated. But it can, for example, a sequence of this Objects in dependence be determined from an angle relative to the antenna fixed reference direction.

In In a development of the invention, the device has an input means, in particular trackball, for controlling a spreading factor of an audio magnifier on, wherein the device is designed such that the opening angle of the imaging sector the opening angle of the listening sector in dependence changed by this spreading factor can be. This development of the invention allows a particularly detailed and efficient listening of objects. If a target is visually targeted, the listening sector will focus on the acoustic imaging sector in the acoustic imaging plane. The opening angle This mapping sector can now be trackballs or alternatively by means of another input device, changed, in particular enlarged. As a result, a more accurate acoustic separation of objects is possible since Also increase the angles between directions that make up the objects associated noises for the Seem to come to operators.

advantageously, the direction generator generates two directional signals with minimal arranged offset to each other, but directed to a same goal Main receiving directions in each case by directional temporal delay and consequent accumulation of different subsets of the received signals, wherein subsequently the audio signal processing unit of these Directional signals alone or together with other directional signals generates the stereo audio signal. This is an efficient one Focusing on a target to generate the stereo audio signal possible.

For education the direction signals can receive signals be used by a receiving antenna or by several receiving antennas, such as a cylinder base or a side or linear antenna Etc.

In an advantageous development, the Device an operator portable accelerometer, in particular 3D accelerometer for detecting accelerations during movements of the operator, wherein the device is designed such that the main direction of torsion in response to the detected accelerations with respect to the antenna fixed reference direction is pivotable. This makes it possible, after a coarse fixation on a target not only acoustically perceive several objects with distinguishable directions of reception, but to fix by rotation of the head so to a noise source that the sound source assigned to this stereo audio signal equally weighted and delayed equal for both Channels of the stereo audio signal is reproduced and audible according to the operator. Laterally arranged noise sources can be reproduced in the stereo audio signal, so that the targeted object or the targeted noise source can be heard particularly clearly in relation to ambient noise.

Further embodiments emerge from the dependent claims as well as from the attached Drawing closer explained Embodiment. In the drawing show:

1 a control panel with the device according to the invention for Horchpeilung together with the operator;

2 a representation of an observable by means of a sonar monitoring plane and an acoustic image of a located in the monitoring level Horch sector on a lying in an acoustic imaging plane acoustic imaging sector and

3 a block diagram illustrating the process of the invention.

1 shows a control panel 2 for operating a built-in sonar system, for example, in a submarine and an operator 4 of the method described hereinbefore a device described herein 6 operated according to an embodiment of the invention for listening.

The sonar system has a direction generator 8th and an audio signal processing unit 10 on, receive and process the received signals from a receiving antenna of the sonar system, not shown here. In particular, the direction generator forms 8th Directional signals, all or part of the audio signal processing unit 10 passed and processed there to an audio signal. The audio signal acoustically depicts a listening sector located in a monitoring plane which can be monitored by means of the sonar installation.

The device 6 has a sight line detection means 12 on that one eye 14 or the eyes of the operator 4 is directed. In the sight line detection means 12 it is a so-called eye tracker, the one looking direction 16 of the eye 14 detected. In addition, a detection direction 18 from the sight line detection means 12 to the eye 14 recorded and during movements of the operator 4 if necessary readjusted, so that the detection direction 18 - as far as possible - on the eye 14 of the operator 4 remains addressed. In addition to the detection direction 18 also becomes a distance between the sight line detection means 12 and the eye 14 of the operator 4 detected.

The device 6 calculated from the detected detection direction, from the distance of the sight line detection means 12 to the eye 14 and from the determined line of sight 16 together with a known arrangement of the sight line detection means 12 relative to a display means 20 one as a gaze position 22 designated intersection of the line of sight 16 with the display means 20 or with a surface of the display means 20 ,

The display means 20 may be part of a console and have one or more monitors or displays or other means of graphical representation.

The device 6 further comprises a main alignment adjusting means 24 on, which is the Haupthorchrichtung depending on the detected line of sight 16 or depending on the calculated gaze position 22 established.

The Audio signal can be a mono audio signal or a, in particular binaural, Be stereo audio signal.

In contrast to the embodiment shown, when the audio signal is a mono audio signal, single or multiple directional signals having different main receiving directions are processed to the mono audio signal, the directional signals being viewed through the viewing direction 16 or the gaze position 22 of the operator 4 from which the mono audio signal is generated. Possibly. the adjustment of the Haupthorchrichtung in conjunction with an operation of an input means 24 , which is designed here as a trackball, and / or in connection with the operation of at least one, for example, designed as a button, control element 26 , In particular, by means of the operating element 26 one by means of the line of sight 16 confirmed input. The selection of a range is possible by beispielswei se the operating element 26 is kept pressed at a first viewing position, while the viewing direction 16 pivots to a second viewing position, and then released. In addition, the number of Horchrichtungen located to the left and right of the Haupthorchrichtung, which are used to form the mono audio signal, by turning the trackball 24 be changed so that a larger or smaller area can be heard around the Haupthorchrichtung.

The stereo audio signal according to the illustrated embodiment has a left and a right signal. When playing the stereo audio signal through a binaural playback device, such as a stereo headset 28 , attenuation and / or delay of the left and right audio signals are essentially as if they were the stereo headphones 28 carrying operators 4 are in the position of the receiving antenna, or look in the direction of the Haupthorchrichtung or listen and perceive incoming water sound signals as airborne sound signals through his two ears. Consequently, a two-dimensional acoustic impression can be produced by the operator by means of the stereo audio signal. The Haupthorchrichtung, which could possibly also be outside of Horchsektors, is thus that of a directional characteristic belonging main receiving direction, which is associated with a direction signal or would be weighted or delayed for the formation of the left audio signal as well as for the Formation of the right audio signal.

On the display means 20 becomes an audio alignment pointer representing the main direction 30 presented to the operator 4 It serves as a guide in which direction he is listening. In particular, it is easy to determine the listening direction relative to detected targets or possibly indicated cardinal directions or relative to the submarine having the sonar system.

On the stereo headphone 28 is a 3D accelerometer 32 attached. Accelerations and thus also a turning or pivoting of the head of the operator 4 can by means of the 3D accelerometer 32 detected and in the form of signals to the device 6 which, in response to these signals, fine tunes the main hori- zon. The servant 4 Thus, by turning or swiveling its head, it is even easier to differentiate between closely spaced targets or noise sources and to recognize their arrangement in the monitoring plane or in the listening sector.

2 show the A a listening sector 34 in a monitoring level UE on an imaging sector 36 in the of the binaural stereo audio signal acoustically by means of the stereo headphone 28 aufspannbaren image plane AE according to the embodiment of 1 ,

Water sound signals apply to those in the description 1 mentioned and not yet designated receiving antenna 38 holding several hydrophones 40 has, of which three are designated by way of example. The receiving antenna 38 is a linear antenna. Alternatively, however, it is also possible for example to provide an antenna with a cylinder-like base or a combination of a plurality of possibly different antennas. A transverse direction to the receiving antenna 38 determines an antenna-fixed reference direction BR.

Within the listening sector 34 is at least one, but preferably a plurality of directional characteristics R, each having a main receiving direction HR is assigned. Each main reception direction HR points in the direction of the reception maximum of (in 2 Arbitrary lobes with secondary reception maxima and secondary secondary directions associated with them are not shown graphically and will not be considered further in the present case.

As in the description too 1 described, detects the sight line detection means 12 the line of sight 16 of the operator 4 , In response to this, the device provides 6 , as described, the already mentioned and here for the first time designated Haupthorchrichtung 44 one. Coincidentally, the Haupthorchrichtung agrees 44 in this embodiment with the antenna fixed reference direction BR match. However, if the operator pivots his gaze position, for example, to a position to the left of the displayed audio dart pointer and the device 6 Thereafter, the main theory is redefined, resulting in a new main direction, compared to the in 2 illustrated Haupthorchrichtung 44 or with respect to the antenna-fixed reference direction BR is pivoted.

The main orchard 44 is in the middle of the listening sector 34 and thus shares the opening angle 46 of the listening sector 34 in two equal partial angles.

The embodiment shows a 1: 1 mapping of the Horchsektors 34 on the imaging sector 36 , The main orchard 44 becomes an imaged main thorax 44 ' shown in the image plane AE. The pictured main horn 44 ' lies in the middle plane between two shells 48 and 50 of the stereo headphone 28 ie, in the plane which the connecting line of the respective acoustic centers of the earphone clams 46 . 48 in the middle of this connecting line perpendicular cuts.

The opening angle 52 of the picture sector 36 is equal to the opening angle 46 of the listening sector 34 , By means of the trackball or input device 24 However, the opening angle can 52 of the picture sector 36 opposite the opening angle 46 of the listening sector 34 be changed depending on a spreading factor. By turning the trackball 24 is the spreading factor adjustable. In the in 2 The figure shows that the spreading factor has the value 1. An enlargement of the spreading factor leads to an enlargement of the opening angle 52 of the picture sector 36 opposite the opening angle 46 of the listening sector 34 , so that the function of an audio magnifier results. After setting the main horn 44 by the direction of view 16 can the operator 4 use one of his free hands with the trackball 24 acoustically into the listening sector 34 zoom in and thus an improved spatial resolution of in the Horchsektor 34 to obtain detectable noise sources.

3 shows a block diagram for illustrating the described and not yet designated inventive method 54 according to an embodiment of the invention.

The direction of view 16 of the operator 4 is from the input means or eye tracker 24 recorded and in the form of sight line signals 56 to the main cursor adjusting means 23 transmitted. The main alignment adjusting means 23 acts as a translator and determines with the gaze direction signals 56 optionally in conjunction with other known and / or determined parameters, such as dimensions of the control panel 2 , the arrangement of the display means 20 on the control panel 2 and / or the position of the operator 4 relative to the control panel 2 , the gaze position 22 , in particular on the display means 20 , This viewpoint 22 is in the form of signals to the direction builder 8th and, if necessary, further direction generators. The direction builder 8th transmitted according to the viewing position 22 single, multiple or all directional signals 58 to the audio signal processing unit 10 , This can be the direction signals 58 be formed by summation of directionally weighted and / or delayed received signals.

The audio signal processing unit 10 finally generates the not yet named audio signal 60 which may be a mono audio signal or a stereo audio signal. The stereo audio signal 60 becomes the operator 4 over the stereo headphone 28 leaked. Alternatively, the stereo audio signal 60 be played over another stereo playback device, but when the audio signal 60 a binaural audio signal is an unadulterated binaural audio impression only when playing the binaural audio signal 60 via a binaural playback device, such as the stereo headset 28 , is to achieve.

When the audio signal 60 is a mono audio signal, this can be done either via the stereo headset 28 , for example, with identical signals for the left clam 48 and the right shell 50 be reproduced. Alternatively, however, a single shell or a single loudspeaker is sufficient for the reproduction of the mono audio signal.

Overall, the invention thus allows a quick and comfortable setting of the Haupthorchrichtung 44 or a bearing angle, which makes do with respect to the prior art with less manual operations of controls, so that an operator 4 at least temporarily has his hands free for the operation of other controls or to control other functions.

Claims (14)

Apparatus for listening by means of acoustic monitoring of at least one listening sector ( 34 ) located in a monitoring unit (UE) which can be monitored by means of a sonar installation, the sonar installation comprising a plurality of water sound sensors ( 40 ) receiving antenna ( 38 ), by means of the water sound signals can be received and received signals can be generated from the water sound signals, wherein the sonar system is a direction generator ( 8th ) and an audio signal processing unit ( 10 ), by means of which together from the received signals a the Horchsektor ( 34 ) acoustically reproducing audio signal ( 60 ), and wherein the device has a main alignment setting means ( 23 ), by means of which in the monitoring level (UE) lying Haupthorchrichtung ( 44 ) is adjustable by pivoting with respect to an antenna-fixed reference direction (BR), characterized in that the device is a viewing direction detection means (BR) 12 ), by means of which a viewing direction ( 16 ) of one or both eyes ( 14 ) of an operator ( 4 ) is detectable, and the Haupthorchrichtungseinstellmittel ( 23 ) is formed such that by means of the Haupthorchrichtungseinstellmittels ( 23 ) the main direction ( 44 ) as a function of the detected line of vision ( 16 ) is adjustable. Device according to Claim 1, characterized by an optical display means ( 20 ), on which the monitoring plane (UE) is at least partially optically imageable, wherein the device ( 6 ) is designed such that one the viewing direction ( 16 ) crossing viewing position ( 22 ) on the display means ( 20 ) detectable and one at this viewing position ( 22 ) formed Horchrichtung means of Hauptororchrichtungseinstellmittels ( 23 ) as the main orchestration ( 44 ) is adjustable. Apparatus according to claim 1 or 2, characterized in that on the display means ( 20 ) the main direction ( 44 ) representing audio Peilzeiger ( 30 ) can be displayed. Device according to one of the preceding claims, characterized in that the audio signal ( 60 ) via a stereo headset ( 28 ) reproducible, in particular binaural, stereo audio signal ( 60 ), which spans an acoustic imaging plane (AE), the listening sector ( 34 ) on an imaging plane (AE) lying in the acoustic imaging sector ( 36 ) is displayed. Apparatus according to claim 4, characterized by an input means ( 24 ), in particular trackball, for controlling a spreading factor of an audio loupe, the device ( 6 ) is designed such that the opening angle ( 52 ) of the imaging sector ( 36 ) compared to the opening angle ( 46 ) of the listening sector ( 34 ) is variable as a function of the spreading factor. Apparatus according to claim 4 or 5, characterized in that by means of the direction generator ( 8th ) two directional signals ( 58 ) arranged with minimally staggered, but directed to a same target main receiving directions in each case by directional delay and converge summation of different subsets of the received signals can be generated and from these direction signals ( 58 ) alone or together with further directional signals ( 58 ) by means of the audio signal processing unit ( 10 ) the stereo audio signal ( 60 ) can be generated. Device according to one of the preceding claims, characterized by a signal from the operator ( 4 ) portable accelerometer ( 32 ) for detecting accelerations during movements of the operator ( 4 ), the device ( 6 ) is formed such that the main body ( 44 ) is pivotable in response to the detected accelerations with respect to the antenna fixed reference direction (BR). Method for listening by means of acoustic monitoring of at least one listening sector ( 34 ), which is located in a monitorable by means of a sonar facility monitoring level (UE), wherein a plurality of water sound sensors ( 40 ) receiving antenna ( 38 ) the sonar system receives water sound signals and generates received signals from the water sound signals, wherein a direction generator ( 8th ) and an audio signal processing unit ( 10 ) the sonar system together from the received signals a the Horchsektor ( 34 ) acoustically reproducing audio signal ( 60 ) and wherein a Haupthorchrichtungseinstellmittel ( 23 ) a main body (UE) lying in the monitoring level (UE) ( 44 ) by pivoting with respect to an antenna-fixed reference direction (BR), characterized in that a sight-direction detection means (BR) 12 ) a line of sight ( 16 ) of an eye ( 14 ) or both eyes of an operator ( 4 ) and the main alignment control means ( 23 ) the main direction ( 44 ) as a function of the detected line of vision ( 16 ). A method according to claim 8, characterized in that the monitoring level (UE) at least partially on an optical display means ( 20 ) of the device ( 6 ) is shown that one the direction of view ( 16 ) on the display means ( 20 ) crossing viewing position ( 22 ) is detected and that the main alignment means ( 23 ) one at this viewing position ( 22 ) illustrated Horchrichtung as the main direction ( 44 ) certainly. Method according to claim 8 or 9, characterized in that on the display means ( 20 ) the main direction ( 44 ) representing audio Peilzeiger ( 30 ) is pictured. Method according to one of claims 8 to 10, characterized in that the audio signal ( 60 ) via a stereo headset ( 28 ) reproducible, in particular binaural, stereo audio signal ( 60 ), which spans an acoustic imaging plane (AE), the listening sector ( 34 ) on an imaging plane (AE) lying in the acoustic imaging sector ( 36 ) is displayed. Method according to claim 11, characterized in that by means of an input means ( 24 ), in particular trackballs a spreading factor of an Audiolupe is controlled, wherein the device the opening angle ( 52 ) of the imaging sector ( 36 ) compared to the opening angle ( 46 ) of the listening sector ( 34 ) changed depending on the spreading factor. Method according to claim 11 or 12, characterized in that the direction generator ( 8th ) two directional signals ( 58 ) with minimally staggered, but directed to a same target main receiving directions (HR) each generated by direction-dependent time delay and conphatic summation of different subsets of the received signals and the audio signal processing unit ( 10 ) from the directional signals ( 58 ) alone or together with further directional signals ( 58 ) the stereo audio signal ( 60 ) generated. Method according to one of claims 7 to 13, characterized in that an accelerator transducers of the device ( 6 ) Accelerations during movements of the operator ( 4 ) and the device ( 6 ) in response to the detected accelerations the main direction ( 44 ) is pivoted relative to the antenna-fixed reference direction (BR).