EP1028601A2 - Dispositif pour l'acquisition d'ondes sonores dans un véhicule - Google Patents

Dispositif pour l'acquisition d'ondes sonores dans un véhicule Download PDF

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Publication number
EP1028601A2
EP1028601A2 EP00102695A EP00102695A EP1028601A2 EP 1028601 A2 EP1028601 A2 EP 1028601A2 EP 00102695 A EP00102695 A EP 00102695A EP 00102695 A EP00102695 A EP 00102695A EP 1028601 A2 EP1028601 A2 EP 1028601A2
Authority
EP
European Patent Office
Prior art keywords
microphone
recording
sound
microphone capsule
capsule
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.)
Granted
Application number
EP00102695A
Other languages
German (de)
English (en)
Other versions
EP1028601B1 (fr
EP1028601A3 (fr
Inventor
Andreas Peiker
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.)
Individual
Original Assignee
Individual
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1028601A2 publication Critical patent/EP1028601A2/fr
Publication of EP1028601A3 publication Critical patent/EP1028601A3/fr
Application granted granted Critical
Publication of EP1028601B1 publication Critical patent/EP1028601B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/13—Acoustic transducers and sound field adaptation in vehicles

Definitions

  • the invention relates to a device for detecting Sound waves in a vehicle according to the generic term of Claim 1.
  • a device of the type mentioned is already from the DE 39 07 895 A1 known.
  • This insensitivity to noise is so long sufficient to ensure that the Sound waves of noise are not in the same direction run like the sound waves of the speaker.
  • a multilayered background noise such as that in motor vehicles, especially due to the diverse Noise sources and the reflection of sound waves occurs must always be reckoned with sound waves that are in the same Direction of the speaker's sound waves, and therefore significantly reduce the recording quality of the microphone.
  • EP 0 677 977 A1 describes a holder for Microphone capsules known by the shape of the Housing or the design of the front with openings for the sound passage for use as a microphone housing for Handsfree is optimized. Even with this solution exists when there is high background noise Need for improvement.
  • the object of the invention is a universally applicable Device for recording and processing more diverse To create sound sources.
  • the invention is based on the main idea, an extreme one flexible and versatile Microphone arrangement to create a variety of Sound sources recorded in the motor vehicle and their Further processing depends on each other.
  • An advantage of the invention is that the device according to the invention, for example in the A-pillar, in the roof area above the windscreen or installation slots provided in the dashboard without uses additional installation effort, although two microphone capsules are used. This advantage is particularly evident in Conversions and retrofits noticeable.
  • Processing of one recording signal by the other Recording signal has the advantage that when processing on any, even on unforeseen combinations of sounds, can be reacted to.
  • An influence on the sensitivity of the Microphone capsule for recording speech allows reaching a constant recording quality when using the Cars of users of different body types and thus different seating position respectively different distance from the microphone housing.
  • Such Influencing the sensitivity to absorption stabilizes the Recording quality even if the user during the Taking different positions for example, because it turns into a confusing street bends forward.
  • Another advantage for the device according to the invention results from the fact that the microphone capsule for receiving Speech sits approximately in the middle of the case and the microphone capsule for picking up noise on or in a housing wall is arranged. Such an arrangement ensures optimal recording quality of the microphone capsule for recording Language and a space-saving and for installing the Microphone capsule advantageous for recording noise Arrangement of the microphone capsule for picking up noise.
  • An advantageous embodiment of the subject of the invention sees before, the microphone capsules a common Allocate sound entry cone. By this measure is ensured that both capsules in their own way from record the same sound.
  • An expedient embodiment of the invention provides that at least one sound space is used by two microphones. By sharing a sound space of two It is possible to use the microphone housing without microphones To design partition walls and therefore no unnecessary space to consume, yet influence the sound waves in the housing to take.
  • An expedient embodiment of the subject matter of the invention provides for the housing to hold a microphone capsule of speech in a frequency range from 150 to 6400 Hz and a microphone capsule for recording noise in one Frequency range from 30 to 5000 Hz.
  • the microphone capsule for receiving Noise preferably has a spherical characteristic. Due to the spherical characteristics of the microphone capsule for recording of noise, it is possible to the microphone capsule Recording noise in an edge area of the Arrange the microphone housing, so that in the microphone housing available space is used optimally and the arrangement of the Microphone capsule for recording speech in the microphone housing can be freely chosen.
  • the microphone capsule for recording speech has front and a rear sound inlet and the membrane of the microphone capsule for recording speech is arranged perpendicular to the axis of the sound inlet cone. This arrangement of the microphone capsule for receiving Speech is used even at a small distance between the Sound source and the microphone housing a good one Recording quality reached.
  • Fig. 1 is a microphone housing 1 in section Side view shown.
  • the microphone housing 1 consists of a trough-shaped base body 2 with side walls 3, 4, a rear wall 5, a front wall 6 (see Figure 2) and a bottom wall 7, the interior 7a include.
  • the bottom wall 7 has a recess 8 and Walls 5 and 6 have recesses 9.
  • a microphone capsule 10 with a longitudinal axis 10a, a head side 10b, one Foot side 10c and sound inlets 10d, 10e is in the Indentation 8 of the bottom wall 7 and between the recesses 9 the walls 5, 6 held.
  • the microphone capsule 10 is with Connecting wires 11, 12 connected to the microphone housing 1 leave through a channel 13 in the bottom wall 7.
  • Another microphone capsule 14 is in a through hole 15 the side wall 4 arranged.
  • the microphone capsule 14 has one Head side 14a with a sound inlet 14b, a foot side 14c and a longitudinal axis 14d.
  • the microphone capsule 10 divides the interior 7a of the base body 2 in a sound space 16 and in a sound space 17.
  • the Sound space 16 is between the side wall 3 and the Head side 10b of the microphone capsule 10 is formed.
  • the Sound space 17 is between the side wall 4 and the foot side 10c of the microphone capsule 10 is formed. If you look at that Volume of the interior 7a, so becomes about 1/5 of the volume through the sound space 16 and 2/5 of the volume through the Sound space 17 taken, the microphone capsule 10 itself takes up about 2/5 of the volume.
  • 20 is a Sound cone 21 with one in the sound entry direction pointing arrow 21a indicated on the microphone housing 1 meets.
  • the longitudinal axis 10a of the microphone capsule 10 and the Longitudinal axis 14d of microphone capsule 14 are perpendicular to Arrow 21a, which is in the sound entry direction of the Sound cone 21 points.
  • the sound inlets 10d, 10e are located parallel to the arrow 21a and perpendicular to the longitudinal axis 10a Microphone capsule 10.
  • Fig. 2 is a circumferential on the side walls 3, 4, on the rear wall 5 and on the front wall 6 see paragraph 22 executed.
  • This paragraph 22 forms one Edition 23 for a cover, not shown Microphone housing 1.
  • FIG 3 shows the microphone housing 1 in a side view.
  • the microphone capsule 14 can be seen in the Through hole 15 sits.
  • the microphone capsule 10, which is used as a microphone capsule for recording can be formed by speech takes from the sound space 16 and the sound space 17 if they have a front and has a rear sound inlet.
  • This signal is either processed in a unit 25 and for example to control the microphone capsule 10, which is a Microphone capsule can act to record speech, used.
  • the signal of the microphone capsule 14 is in a unit 26 worked up from the recording that with the microphone capsule 10 was made, the noise eliminate.
  • the speech signal to the transmission unit 27 further processing steps are in Signal processing systems 28 conceivable.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
EP00102695A 1999-02-10 2000-02-09 Dispositif pour l'acquisition d'ondes sonores dans un véhicule Expired - Lifetime EP1028601B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29902393U 1999-02-10
DE29902393U DE29902393U1 (de) 1999-02-10 1999-02-10 Vorrichtung zur Erfassung von Schallwellen in einem Fahrzeug

Publications (3)

Publication Number Publication Date
EP1028601A2 true EP1028601A2 (fr) 2000-08-16
EP1028601A3 EP1028601A3 (fr) 2002-06-12
EP1028601B1 EP1028601B1 (fr) 2005-12-28

Family

ID=8069223

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00102695A Expired - Lifetime EP1028601B1 (fr) 1999-02-10 2000-02-09 Dispositif pour l'acquisition d'ondes sonores dans un véhicule

Country Status (4)

Country Link
EP (1) EP1028601B1 (fr)
AT (1) ATE314799T1 (fr)
DE (3) DE29902393U1 (fr)
ES (1) ES2255904T3 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0429264A2 (fr) * 1989-11-20 1991-05-29 Matsushita Electric Industrial Co., Ltd. Appareil microphonique
EP0683621A2 (fr) * 1994-05-18 1995-11-22 Nippon Telegraph And Telephone Corporation Emetteur-récepteur ayant un transducteur acoustique du type embout auriculaire
WO1997025790A2 (fr) * 1995-06-07 1997-07-17 Andrea Electronics Corporation Appareil de suppression et de reduction de bruit
US5835607A (en) * 1993-09-07 1998-11-10 U.S. Philips Corporation Mobile radiotelephone with handsfree device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0429264A2 (fr) * 1989-11-20 1991-05-29 Matsushita Electric Industrial Co., Ltd. Appareil microphonique
US5835607A (en) * 1993-09-07 1998-11-10 U.S. Philips Corporation Mobile radiotelephone with handsfree device
EP0683621A2 (fr) * 1994-05-18 1995-11-22 Nippon Telegraph And Telephone Corporation Emetteur-récepteur ayant un transducteur acoustique du type embout auriculaire
WO1997025790A2 (fr) * 1995-06-07 1997-07-17 Andrea Electronics Corporation Appareil de suppression et de reduction de bruit

Also Published As

Publication number Publication date
ATE314799T1 (de) 2006-01-15
DE10005362A1 (de) 2000-08-17
DE50011937D1 (de) 2006-02-02
EP1028601B1 (fr) 2005-12-28
EP1028601A3 (fr) 2002-06-12
ES2255904T3 (es) 2006-07-16
DE29902393U1 (de) 2000-07-20

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