EP1623599B1 - Microphone device, XLR connector device and receiv device for wireless microphone - Google Patents

Microphone device, XLR connector device and receiv device for wireless microphone Download PDF

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Publication number
EP1623599B1
EP1623599B1 EP04723180A EP04723180A EP1623599B1 EP 1623599 B1 EP1623599 B1 EP 1623599B1 EP 04723180 A EP04723180 A EP 04723180A EP 04723180 A EP04723180 A EP 04723180A EP 1623599 B1 EP1623599 B1 EP 1623599B1
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Prior art keywords
digital
signal
microphone
analogue
connection
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German (de)
French (fr)
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EP1623599A1 (en
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Rolf Meyer
Klaus-Michael Polten
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Sennheiser Electronic GmbH and Co KG
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Sennheiser Electronic GmbH and Co KG
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    • 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

Definitions

  • the invention relates to a microphone with a detection device for determining whether a digital or analog audio signal processing device is connected to the detection device, an XLR connector with such a detection device and an audio signal processing device with such a detection device.
  • Microphones with both analogue and microphones with a digital output are known.
  • the interface of a microphone with analog output is in the standard IEC 268 and the interface of a digital microphone is described in the AES 42 standard.
  • electrodynamic sound transducers In the known microphones, a distinction is made between electrodynamic sound transducers and microphones with electrostatic sound transducers.
  • the electrodynamic transducers generally pass on the unamplified output signal directly to subsequent audio signal processing devices. Such microphones therefore need no internal or external supply voltage.
  • the microphones with electrostatic transducers such as condenser or electret microphones, however, require an internal or external power supply to operate their internal amplifier.
  • the signal coming from the electrostatic transducer is amplified and then fed to subsequent audio signal processing devices.
  • the following audio signal processing devices may include, for example, microphone (pre-) amplifiers, amplifiers, mixing consoles, recording devices with magnetic tape, hard disk recorders, so-called on-stage stage boxes and other signal processing devices, which amplifiers, analog / digital converters (DAC ), Filters or the like.
  • pre- microphone
  • DAC analog / digital converters
  • IEC 268 the cable between the microphone and the subsequent signal processing, which is usually used for transmitting the audio signals from the microphone to the subsequent signal processing, also used to provide the signal voltage for the microphone by the subsequent signal processing. This voltage is 48 volts for analog microphones and analog signal processors.
  • AES 42 For microphones with digital signal output, however, a supply voltage of 10 volts is specified in the AES 42 standard mentioned above. This supply voltage for the digital signal output of a microphone is, as described above, provided by the subsequent signal processing device via the cable between the microphone and the signal processing device.
  • the standard for the digital interface between the microphone and the signal processing device (AES 42) also provides for the transmission of a dialogue protocol (DPP) for determining the status and setting the corresponding ones Parameters, such as sample rate, impact sound filters, and the like.
  • DPP dialogue protocol
  • US 4,745,298 shows an electronic circuit for providing an audio signal at a slot provided for connection to an external audio processing device.
  • the circuit is configured to automatically determine whether an external signal source connected to it has electrical characteristics indicative of the external source providing a digital or analog input signal.
  • US 6,185,627 relates to a method of selectively transmitting a first or second signal as an output signal depending on whether a speaker is an analog speaker or a digital speaker.
  • the object of the invention is therefore to expand the possible uses of digital and analog microphones and analog or digital signal processing equipment.
  • the invention is based on the idea to provide a detection device which is able to distinguish whether a connected microphone or audio signal processing device on an analog or digital basis is working. According to this determination, an analog or digital connection is selected.
  • a detection device which comprises a detection device, a determination device and a selection device having.
  • the detection device detects an external signal supplied to the detection device and forwards this signal to the determination device.
  • the determining means determines whether the detected external signal has been transmitted from an analog or digital audio signal processing apparatus and forwards a corresponding determination signal to the selection means.
  • the selector selects either an analog or digital port in response to the destination signal.
  • the user can easily combine digital and analog microphones and audio signal processing devices. Thus, safe operation without interference is possible in any case.
  • the detection device has a first connection.
  • An analogue and digital output signal of a microphone can be connected to the analogue and digital connection.
  • the selector then outputs the signal of a microphone received via the selected terminal to the terminal.
  • the detection device can be coupled with a microphone with both an analog and a digital output, wherein the detection device outputs either the analog or the digital output signal of the microphone in dependence on the external signal.
  • the detection device has a first connection.
  • the selector supplies a signal received from the first terminal to the analog or digital terminal in accordance with the determination signal.
  • an analog or digital output signal of a microphone can be supplied automatically by means of the selection device of the corresponding analog or digital further signal processing.
  • the detection device is adapted to detect the voltage applied to the first terminal voltage.
  • the decision as to whether an analog or digital signal is applied to the detection device can be made according to the magnitude of the applied voltage.
  • the detection device and the determination device are configured to record and evaluate a digital dialog protocol.
  • Fig. 1 shows a block diagram of a detection device according to a first embodiment not claimed.
  • This detection device is particularly suitable for use with a microphone. It has a first connection 7, a detection device 6, a determination device 5, a selection device 4 with an analog connection 4a and a digital connection 4b, an A / D converter 8 and a second connection 9.
  • the first terminal 7 may be connected to an external audio signal processing apparatus, while the second terminal 9 may be connected to an external microphone.
  • the external audio signal processing device provides either a signal voltage of 10 volts - if it is a digital output - or an output voltage of 48 volts - if this is an analog output.
  • the detection device 6 detects the voltage applied to the first terminal 7, which is characteristic of the analog or digital mode, and forwards it to the determining means 5.
  • the height of the applied voltage is determined and forwarded to the selector 4.
  • the selector selects the analog terminal 4a when the voltage is 48 volts and the digital terminal 4b when the voltage is 10 volts.
  • the analog or digital output of a microphone is selected according to whether the externally connected signal processing device is analog or digital.
  • FIG. 2 shows a detection device according to a non-claimed second embodiment of the invention.
  • This detection device is preferably operated on or in the audio signal processing devices, such as a mixer or the like.
  • the detection device has a first connection 7, a detection device 6, a determination device 5 and a selection device 4.
  • the first terminal 7 is connected to an external microphone and receives the output signals from the microphone. These signals are detected by the detection device 6 and forwarded to the determination device 5, in which it is determined whether the signals from the microphone are analog or digital signals.
  • the result is then forwarded to the selection device 4, which selects either the analog connection 4a or the digital connection 4b on the basis of these signals and forwards the signals received from the external microphone via the first connection 7 to the selected connection 4a, 4b.
  • the analog terminal 4a and the digital terminal 4b may be connected to a corresponding processing of the analog or digital signals in the signal processing apparatus for further processing.
  • a microphone has the detection device according to the first exemplary embodiment.
  • the microphone with the aid of the detection device can determine or identify whether it is to an analog or digital signal processing device, such as a mixer, is connected. According to the identification, the microphone provides an analog signal according to the IEC 268 standard or a digital signal according to the AES 42 standard when connected to an analog or digital signal processing device.
  • the detecting and determining means receives an applied voltage of 10 volts and a digital dialogue protocol DPP according to the AES 42 standard
  • the selector 4 provides a digital output signal corresponding to the AES 42 standard at the terminal 7.
  • an analog output signal from the selector 4 is provided at the terminal 7.
  • the analog terminal 4a is selected by the selector 4 and forwarded to the terminal 7.
  • This analogue output corresponds to the IEC 268 standard, ie. There is a phantom power.
  • the analog output signal at the output 4a of the selector 4 is forwarded to the first terminal 7. It is assumed that this microphone is a dynamic microphone.
  • the detection device has an internal power supply, such as a battery, for powering the device.
  • the detection circuit with the internal power supply can either be switched on via a switch on the microphone or automatically switched on when plugging the microphone into an XLR plug.
  • the capsule signal of the microphone is directly switched from the selector 4 to the terminal 7.
  • the detection device further comprises a unit for operating voltage detection, an analog / digital converter with an output protocol according to the AES 42 norm.
  • the selection device 4 has a switch for switching on or contacting the analog or digital output 4a, 4b in accordance with the detected external signal processing device. This enables transmitter detection, i. the detection device detects from which device (analog or digital) the microphone is supplied with the required voltage.
  • the detection device is arranged in the housing of the microphone.
  • the detection device and optionally the analog to digital converter 8 are mounted in a separate housing with an XLR plug so that the microphone above the XLR plug can be connected to an external signal processing device.
  • the function of the detection device corresponds to the function of the detection device according to the first and second embodiments.
  • the detection device and optionally the analog / digital converter 8 is arranged in a female XLR connector of a microphone cable.
  • the detection device can be set to the female XLR input fixed for a digital or analog microphone or optionally also be switched over.
  • the female XLR connector may include a display device which, according to the selection of the selector 4, indicates whether the microphone is connected to a digital or analog signal processing device.
  • a microphone described in the third embodiment has a display device which indicates whether the microphone is connected to an analog or digital signal processing device.
  • an audio signal processing apparatus comprises a detection apparatus according to the second embodiment.
  • the detection device checks whether an analog or digital microphone is connected to the audio signal processing device.
  • the microphone is regarded as a source or transmitter.
  • a signal voltage for a dynamic microphone i. ⁇ 10 mV.
  • an ohmic test is carried out, wherein the resistance is> 200 ⁇ or 500 ⁇ .
  • a signal statistics check may be performed to determine if the signal is voice or music.
  • the connection conditions can be selected according to the characteristics of the dynamic microphone.
  • the constant current consumption is checked (12 volts> 10 mA ⁇ 300 mA). Then the digital signal current (HP 500 kHz) is checked. At a voltage of 12 volts, a digital dialog protocol is sent to the microphone.
  • the turn-on condition for a digital microphone is set based on the AES 42 norm. However, if there is no data stream, it is checked if the voltage rises to 48 volts with a current of ⁇ 10 mA. Then, a turn-on condition corresponding to an analog microphone is set based on the IEC 268 standard. If necessary, a signal statistics check can be carried out.
  • the use of the detection device is also possible with wireless microphone systems to determine if an analog or digital microphone or signal processing device is connected. It is irrelevant whether the wireless transmission is analog or digital, since it is only relevant for the detection device according to the invention, which signal is present at the output of the receiver.

Abstract

The invention is based on the idea of providing a detection device which is capable of distinguishing whether a microphone or audio signal processing arrangement connected thereto operates on an analog or digital basis. An analog or digital connection is selected in accordance with that determination procedure. Consequently there is provided a detection device which has a sensing device, a determining device and a selecting device. The sensing device senses an external signal fed to the detection device and forwards that signal to the determining device. The determining device determines whether the sensed external signal was transmitted by an analog or digital signal processing apparatus and transmits a corresponding determination signal to the selecting device. The selecting device then selects either an analog or a digital connection, in dependence on the determination signal.

Description

Die Erfindung betrifft ein Mikrofon mit einer Detektionsvorrichtung, zum Bestimmen, ob eine digitale oder analoge Audio-Signalverarbeitungsvorrichtung an die Detektionsvorrichtung angeschlossen ist, einen XLR-Stecker mit einer derartigen Detektionsvorrichtung und ein Audio-Signalverarbeitungsgerät mit einer derartigen Detektionsvorrichtung.The invention relates to a microphone with a detection device for determining whether a digital or analog audio signal processing device is connected to the detection device, an XLR connector with such a detection device and an audio signal processing device with such a detection device.

Es sind Mikrofone mit sowohl einem analogen als auch Mikrofone mit einem digitalen Ausgang bekannt. Die Schnittstelle eines Mikrofons mit analogem Ausgang ist in der Norm IEC 268 und die Schnittstelle eines digitalen Mikrofons ist in der Norm AES 42 beschrieben.Microphones with both analogue and microphones with a digital output are known. The interface of a microphone with analog output is in the standard IEC 268 and the interface of a digital microphone is described in the AES 42 standard.

Als allgemeiner Stand der Technik sei hingewiesen auf DE 42 07 447 A1 , DE 196 00 404 A1 , DE 44 27 396 A1 sowie DE 196 06 261 C2 .As a general state of the art should be noted DE 42 07 447 A1 . DE 196 00 404 A1 . DE 44 27 396 A1 such as DE 196 06 261 C2 ,

Bei den bekannten Mikrofonen unterscheidet man zwischen elektrodynamischen Schallwandlern und Mikrofonen mit elektrostatischen Schallwandlern. Die elektrodynamischen Schallwandler geben in der Regel das unverstärkte Ausgangssignal unmittelbar an nachfolgende Audio-Signalverarbeitungsgeräte weiter. Derartige-Mikrofone benötigen daher keine interne oder externe Speisespannung.In the known microphones, a distinction is made between electrodynamic sound transducers and microphones with electrostatic sound transducers. The electrodynamic transducers generally pass on the unamplified output signal directly to subsequent audio signal processing devices. Such microphones therefore need no internal or external supply voltage.

Die Mikrofone mit elektrostatischen Schallwandlern, wie beispielsweise Kondensator- oder Elektretmikrofone, benötigen hingegen eine interne oder externe Spannungsversorgung zum Betrieb ihres internen Verstärkers. Das von dem elektrostatischen Schallwandler kommende Signal wird verstärkt und dann den nachfolgenden Audio-Signalverarbeitungsgeräten zugeführt.The microphones with electrostatic transducers, such as condenser or electret microphones, however, require an internal or external power supply to operate their internal amplifier. The signal coming from the electrostatic transducer is amplified and then fed to subsequent audio signal processing devices.

Die nachfolgenden Audio-Signalverarbeitungsgeräte können beispielsweise Mikrofon- (Vor-) Verstärker, Verstärker, Mischpulte, Aufnahmegeräte mit Magnetband, Hard-Disk-Recorder, sogenannte auf der Bühne stehende Stageboxen sowie andere Signalverarbeitungsgeräte enthalten, welche Verstärker, Analog/Digital-Wandler (DAC), Filter oder dergleichen aufweisen. Zur Reduzierung der für die Mikrofone benötigten Kabel, hat es sich in vielen Bereichen eingebürgert, die Stromversorgung der Mikrofone mit einer sogenannten Phantomspeisung gemäß IEC 268 sicherzustellen. Dabei wird das Kabel zwischen Mikrofon und der nachfolgenden Signalverarbeitung, welches üblicherweise zur Übertragung der Audiosignale von dem Mikrofon zu der nachfolgenden Signalverarbeitung verwendet wird, ebenfalls zur Bereitstellung der Signalspannung für das Mikrofon durch die nachfolgende Signalverarbeitung verwendet. Diese Spannung beträgt bei analogen Mikrofonen und analogen Signalverarbeitungsgeräten 48 Volt.The following audio signal processing devices may include, for example, microphone (pre-) amplifiers, amplifiers, mixing consoles, recording devices with magnetic tape, hard disk recorders, so-called on-stage stage boxes and other signal processing devices, which amplifiers, analog / digital converters (DAC ), Filters or the like. In order to reduce the cables required for the microphones, it has become customary in many areas to ensure the power supply of the microphones with a so-called phantom power according to IEC 268. In this case, the cable between the microphone and the subsequent signal processing, which is usually used for transmitting the audio signals from the microphone to the subsequent signal processing, also used to provide the signal voltage for the microphone by the subsequent signal processing. This voltage is 48 volts for analog microphones and analog signal processors.

Für Mikrofone mit digitalem Signalausgang ist jedoch in der oben erwähnten Norm AES 42 eine Versorgungsspannung von 10 Volt festgeschrieben. Diese Versorgungsspannung für den digitalen Signalausgang eines Mikrofons wird, wie oben beschrieben, von dem nachfolgenden Signalverarbeitungsgerät über das Kabel zwischen dem Mikrofon und dem Signalverarbeitungsgerät zur Verfügung gestellt. Die Norm für die digitale Schnittstelle zwischen Mikrofon und Signalverarbeitungsgerät (AES 42) sieht ferner eine Übertragung eines Dialogprotokolls (DPP) zur Statusbestimmung und Einstellung der entsprechenden Parameter, wie beispielsweise Samplerrate, Trittschallfilter und dergleichen, vor.For microphones with digital signal output, however, a supply voltage of 10 volts is specified in the AES 42 standard mentioned above. This supply voltage for the digital signal output of a microphone is, as described above, provided by the subsequent signal processing device via the cable between the microphone and the signal processing device. The standard for the digital interface between the microphone and the signal processing device (AES 42) also provides for the transmission of a dialogue protocol (DPP) for determining the status and setting the corresponding ones Parameters, such as sample rate, impact sound filters, and the like.

Üblicherweise werden die bereits für analoge Mikrofone verwendeten XLR-Stecker und -Kabel ebenfalls für die digitalen Mikrofone verwendet. Damit ergeben sich jedoch in der Praxis gewisse Probleme bei der Handhabung von sowohl analogen als auch digitalen Mikrofonen und Audio-Signalverarbeitungsgeräten. Insbesondere kann es dabei zu einer Verwechselung von digitalen und analogen Mikrofonen kommen, was zu einer nicht unerheblichen Unsicherheit bei der Handhabung dieser Mikrofone führt. Dies kann vor allen Dingen dann zu Problemen führen, wenn die Nutzer nicht genügend Zeit haben, die jeweiligen Mikrofone oder Signalverarbeitungsgeräte dahingehend zu testen, ob sie für den analogen oder digitalen Betrieb ausgelegt sind.Usually, the XLR plugs and cables already used for analog microphones are also used for the digital microphones. However, there are some practical problems in handling both analog and digital microphones and audio signal processing devices. In particular, it can lead to a confusion of digital and analog microphones, which leads to a considerable uncertainty in the handling of these microphones. This can be especially problematic if users do not have enough time to test their microphones or signal processing equipment to see if they are designed for analog or digital operation.

US 4,745,298 zeigt eine elektronische Schaltung zur Bereitstellung eines Audiosignals an einem Steckplatz, der für den Anschluss einer externen Audiosignaiverarbeitungsvorrichtung vorgesehen ist. Die Schaltung ist dazu ausgebildet automatisch zu bestimmen, ob eine mit ihr verbundene externe Signalquelle elektrische Eigenschaften aufweist, die darauf schließen lassen, dass die externe Quelle ein digitales oder ein analoges Eingangssignal bereitstellt. US 4,745,298 shows an electronic circuit for providing an audio signal at a slot provided for connection to an external audio processing device. The circuit is configured to automatically determine whether an external signal source connected to it has electrical characteristics indicative of the external source providing a digital or analog input signal.

US 6,185,627 betrifft ein Verfahren zum selektiven Senden eines ersten oder zweiten Signals als Ausgangssignal in Abhängigkeit davon, ob ein Lautsprecher einen analogen Lautsprecher oder einen digitalen Lautsprecher darstellt. US 6,185,627 relates to a method of selectively transmitting a first or second signal as an output signal depending on whether a speaker is an analog speaker or a digital speaker.

Aufgabe der Erfindung ist es somit, die Einsatzmöglichkeiten von digitalen und analogen Mikrofonen sowie analogen oder digitalen Signalverarbeitungsgeräten zu erweitern.The object of the invention is therefore to expand the possible uses of digital and analog microphones and analog or digital signal processing equipment.

Diese Aufgabe wird durch eine Mikrofonvorrichtung gemäß Anspruch 1, durch eine XLR-Steckervorrichtung gemäß Anspruch 2 sowie eine drahtlose Mikrofonempfangsvorrichtung gemäß Anspruch 7 gelöst.This object is achieved by a microphone device according to claim 1, by an XLR connector device according to claim 2 and a wireless microphone receiving device according to claim 7.

Die Erfindung beruht dabei auf dem Gedanken, eine Detektionsvorrichtung vorzusehen, welche in der Lage ist, zu unterscheiden, ob ein angeschlossenes Mikrofon oder Audio-Signalverarbeitungsgerät auf analoger oder digitaler Basis arbeitet. Entsprechend dieser Bestimmung wird ein analoger oder digitaler Anschluss ausgewählt.The invention is based on the idea to provide a detection device which is able to distinguish whether a connected microphone or audio signal processing device on an analog or digital basis is working. According to this determination, an analog or digital connection is selected.

Folglich wird bei den vorgenannten Vorrichtungen eine Detektionsvorrichtung vorgesehen, welche eine Erfassungseinrichtung, eine Bestimmungseinrichtung und eine Auswahleinrichtung aufweist. Die Erfassungseinrichtung erfasst ein der Detektionsvorrichtung zugeführtes externes Signal und leitet dieses Signal an die Bestimmungseinrichtung weiter. Die Bestimmungseinrichtung ermittelt, ob das erfasste externe Signal von einer analogen oder digitalen Audio-Signalverarbeitungsvorrichtung übermittelt wurde und gibt ein entsprechendes Bestimmungssignal an die Auswahleinrichtung weiter. Die Auswahleinrichtung wählt dann entweder einen analogen oder digitalen Anschluss in Abhängigkeit von dem Bestimmungssignal aus.Consequently, in the aforementioned devices, a detection device is provided, which comprises a detection device, a determination device and a selection device having. The detection device detects an external signal supplied to the detection device and forwards this signal to the determination device. The determining means determines whether the detected external signal has been transmitted from an analog or digital audio signal processing apparatus and forwards a corresponding determination signal to the selection means. The selector then selects either an analog or digital port in response to the destination signal.

Unter Zuhilfenahme der Detektionsvorrichtung kann der Anwender digitale und analoge Mikrofone sowie Audio-Signalverarbeitungsgeräte ohne weiteres kombinieren. Somit ist in jedem Fall ein sicherer Betrieb ohne Störungen ermöglicht.With the aid of the detection device, the user can easily combine digital and analog microphones and audio signal processing devices. Thus, safe operation without interference is possible in any case.

Gemäß einer Ausgestaltung weist die Detektionsvorrichtung einen ersten Anschluss auf. An dem analogen und digitalen Anschluss kann ein analoges und digitales Ausgangssignal eines Mikrofons angeschlossen werden. Die Auswahleinrichtung gibt das über den ausgewählten Anschluss empfangene Signal eines Mikrofons dann an den Anschluss aus.According to one embodiment, the detection device has a first connection. An analogue and digital output signal of a microphone can be connected to the analogue and digital connection. The selector then outputs the signal of a microphone received via the selected terminal to the terminal.

Somit kann die Detektionsvorrichtung mit einem Mikrofon sowohl mit einem analogen als auch mit einem digitalen Ausgang gekoppelt werden, wobei die Detektionsvorrichtung entweder das analoge oder das digitale Ausgangssignal des Mikrofons in Abhängigkeit zu dem externen Signal ausgibt.Thus, the detection device can be coupled with a microphone with both an analog and a digital output, wherein the detection device outputs either the analog or the digital output signal of the microphone in dependence on the external signal.

Gemäß einer weiteren Ausgestaltung weist die Detektionsvorrichtung einen ersten Anschluss auf. Die Auswahleinrichtung gibt ein von dem ersten Anschluss empfangenes Signal entsprechend dem Bestimmungssignal an den analogen oder digitalen Anschluss weiter.According to a further embodiment, the detection device has a first connection. The selector supplies a signal received from the first terminal to the analog or digital terminal in accordance with the determination signal.

Folglich kann beispielsweise ein analoges oder digitales Ausgangssignal eines Mikrofons automatisch mittels der Auswahleinrichtung der entsprechenden analogen oder digitalen weiteren Signalverarbeitung zugeführt werden. Gemäß einer bevorzugten Ausgestaltung der Erfindung ist die Erfassungseinrichtung dazu geeignet, die an dem ersten Anschluss anliegende Spannung zu erfassen. Somit kann die Entscheidung, ob ein analoges oder digitales Signal an der Detektionsvorrichtung angelegt wird, entsprechend der Höhe der anliegenden Spannung getroffen werden.Consequently, for example, an analog or digital output signal of a microphone can be supplied automatically by means of the selection device of the corresponding analog or digital further signal processing. According to a preferred embodiment of the invention, the detection device is adapted to detect the voltage applied to the first terminal voltage. Thus, the decision as to whether an analog or digital signal is applied to the detection device can be made according to the magnitude of the applied voltage.

Gemäß einer weiteren Ausgestaltung der Erfindung ist die Erfassungseinrichtung und die Bestimmungseinrichtung dazu ausgestaltet, ein digitales Dialogprotokoll zu erfassen und auszuwerten.According to a further embodiment of the invention, the detection device and the determination device are configured to record and evaluate a digital dialog protocol.

Weitere Ausgestaltungen der Erfindungen sind Gegenstand der Unteransprüche.Further embodiments of the invention are the subject of the dependent claims.

Nachfolgend wird die Erfindung detaillierter anhand der Zeichnung erläutert, bei der:

Fig. 1
eine Detektionsvorrichtung gemäß einem ersten Ausführungsbeispiel und
Fig. 2
eine Detektionsvorrichtung gemäß einem zweiten Ausführungsbeispiel zeigt.
The invention will be explained in more detail below with reference to the drawing, in which:
Fig. 1
a detection device according to a first embodiment and
Fig. 2
a detection device according to a second embodiment shows.

Fig. 1 zeigt ein Blockschaltbild einer Detektionsvorrichtung gemäß einem nicht beanspruchten ersten Ausführungsbeispiel. Diese Detektionsvorrichtung ist insbesondere geeignet für den Einsatz mit einem Mikrofon. Sie weist einen ersten Anschluss 7, eine Erfassungseinrichtung 6, eine Bestimmungseinrichtung 5, eine Auswahleinrichtung 4 mit einem analogen Anschluss 4a und einem digitalen Anschluss 4b, einen A/D-Wandler 8 und einen zweiten Anschluss 9 auf. Der erste Anschluss 7 kann an ein externes Audio-Signalverarbeitungsgerät angeschlossen werden, während der zweite Anschluss 9 mit einem externen Mikrofon verbunden werden kann. Das externe Audio-Signalverarbeitungsgerät liefert entweder eine Signalspannung von 10 Volt - sofern es sich um einen digitalen Ausgang handelt - oder eine Ausgangsspannung von 48 Volt - sofern es sich dabei um einen analogen Ausgang handelt. Die Erfassungseinrichtung 6 erfasst die an dem ersten Anschluss 7 anliegende Spannung, welche für die analoge oder digitale Betriebsart charakteristisch ist, und leitet diese an die Bestimmungseinrichtung 5 weiter. In der Bestimmungseinrichtung 5 wird die Höhe der anliegenden Spannung ermittelt und an die Auswahleinrichtung 4 weitergeleitet. Entsprechend der festgestellten Spannung an dem ersten Anschluss 7 wählt die Auswahleinrichtung den analogen Anschluss 4a aus, wenn die Spannung 48 Volt beträgt, und den digitalen Anschluss 4b aus, wenn die Spannung 10 Volt beträgt. Somit wird das analoge oder digitale Ausgangssignal eines Mikrofons entsprechend der Tatsache ausgewählt, ob das extern angeschlossene Signalverarbeitungsgerät analog oder digital arbeitet. Fig. 1 shows a block diagram of a detection device according to a first embodiment not claimed. This detection device is particularly suitable for use with a microphone. It has a first connection 7, a detection device 6, a determination device 5, a selection device 4 with an analog connection 4a and a digital connection 4b, an A / D converter 8 and a second connection 9. The first terminal 7 may be connected to an external audio signal processing apparatus, while the second terminal 9 may be connected to an external microphone. The external audio signal processing device provides either a signal voltage of 10 volts - if it is a digital output - or an output voltage of 48 volts - if this is an analog output. The detection device 6 detects the voltage applied to the first terminal 7, which is characteristic of the analog or digital mode, and forwards it to the determining means 5. In the determination device 5, the height of the applied voltage is determined and forwarded to the selector 4. In accordance with the detected voltage at the first terminal 7, the selector selects the analog terminal 4a when the voltage is 48 volts and the digital terminal 4b when the voltage is 10 volts. Thus, the analog or digital output of a microphone is selected according to whether the externally connected signal processing device is analog or digital.

Figur 2 zeigt eine Detektionsvorrichtung gemäß einem nicht beanspruchten zweiten Ausführungsbeispiel der Erfindung. Diese Detektionsvorrichtung wird vorzugsweise an oder in den Audio-Signalverarbeitungsgeräten, wie beispielsweise ein Mischpult oder dergleichen, betrieben. Die Detektionsvorrichtung weist einen ersten Anschluss 7, eine Erfassungseinrichtung 6, eine Bestimmungseinrichtung 5 und eine Auswahleinrichtung 4 auf. Der erste Anschluss 7 ist mit einem externen Mikrofon verbunden und empfängt die Ausgangssignale von dem Mikrofon. Diese Signale werden von der Erfassungseinrichtung 6 erfasst und an die Bestimmungseinrichtung 5 weitergeleitet, in der bestimmt wird, ob es sich bei den Signalen von dem Mikrofon um analoge oder digitale Signale handelt. Das Ergebnis wird dann an die Auswahleinrichtung 4 weitergeleitet, welche anhand dieser Signale entweder den analogen Anschluss 4a oder den digitalen Anschluss 4b auswählt und die von dem externen Mikrofon über den ersten Anschluss 7 empfangenen Signale an den ausgewählten Anschluss 4a, 4b weiterleitet. Der analoge Anschluss 4a und der digitale Anschluss 4b können an eine entsprechende Verarbeitung der analogen oder digitalen Signale in dem Signalverarbeitungsgerät zur Weiterverarbeitung angeschlossen sein. FIG. 2 shows a detection device according to a non-claimed second embodiment of the invention. This detection device is preferably operated on or in the audio signal processing devices, such as a mixer or the like. The detection device has a first connection 7, a detection device 6, a determination device 5 and a selection device 4. The first terminal 7 is connected to an external microphone and receives the output signals from the microphone. These signals are detected by the detection device 6 and forwarded to the determination device 5, in which it is determined whether the signals from the microphone are analog or digital signals. The result is then forwarded to the selection device 4, which selects either the analog connection 4a or the digital connection 4b on the basis of these signals and forwards the signals received from the external microphone via the first connection 7 to the selected connection 4a, 4b. The analog terminal 4a and the digital terminal 4b may be connected to a corresponding processing of the analog or digital signals in the signal processing apparatus for further processing.

In einem dritten, erfindungsgemäßen Ausführungsbeispiel weist ein Mikrofon die Detektionsvorrichtung gemäß dem ersten Ausführungsbeispiel auf. Somit kann das Mikrofon unter Zuhilfenahme der Detektionsvorrichtung bestimmen bzw. identifizieren, ob es an ein analoges oder digitales Signalverarbeitungsgerät, wie beispielsweise ein Mischpult, angeschlossen ist. Entsprechend der Identifizierung stellt das Mikrofon ein analoges Signal entsprechend der IEC 268 Norm oder ein digitales Signal entsprechend der AES 42 Norm bereit, wenn es an ein analoges bzw. digitales Signalverarbeitungsgerät angeschlossen ist. Wenn die Erfassungs- und die Bestimmungseinrichtung eine anliegende Spannung von 10 Volt sowie ein digitales Dialogprotokoll DPP gemäß der AES 42 Norm empfängt, stellt die Auswahleinrichtung 4 ein digitales Ausgangssignal entsprechend der AES 42 Norm an dem Anschluss 7 bereit.In a third embodiment according to the invention, a microphone has the detection device according to the first exemplary embodiment. Thus, the microphone with the aid of the detection device can determine or identify whether it is to an analog or digital signal processing device, such as a mixer, is connected. According to the identification, the microphone provides an analog signal according to the IEC 268 standard or a digital signal according to the AES 42 standard when connected to an analog or digital signal processing device. When the detecting and determining means receives an applied voltage of 10 volts and a digital dialogue protocol DPP according to the AES 42 standard, the selector 4 provides a digital output signal corresponding to the AES 42 standard at the terminal 7.

Wenn eine Spannung von 12 Volt aber kein Dialogprotokoll gemäß der AES 42 Norm erfasst wird, wird ein weiterer Stromtest durchgeführt. Wenn gemäß diesem Stromtest ein Strom von größer als 15 mA geliefert wird, wird ein digitales Eingangssignal an dem Anschluss 7 angenommen und ein digitales Ausgangssignal entsprechend der AES 42 Norm wird durch die Auswahleinrichtung 4 an dem Ausgang 7 bereitgestellt.If a voltage of 12 volts but no dialogue protocol according to the AES 42 standard is detected, another current test is performed. If a current of greater than 15 mA is supplied according to this current test, a digital input signal is accepted at the terminal 7 and a digital output signal according to the AES 42 standard is provided by the selector 4 at the output 7.

Wird eine Spannung von größer als 13 Volt, jedoch kein Dialogprotokoll festgestellt, wird ein analoges Ausgangssignal von der Auswahleinrichtung 4 an dem Anschluss 7 bereitgestellt. Mit anderen Worten, der analoge Anschluss 4a wird von der Auswahleinrichtung 4 ausgewählt und an den Anschluss 7 weitergeleitet. Dieses analoge Ausgangssignal entspricht dabei der IEC 268 Norm, d.h. es liegt eine Phantomspeisung vor.If a voltage of greater than 13 volts, but no dialogue protocol detected, an analog output signal from the selector 4 is provided at the terminal 7. In other words, the analog terminal 4a is selected by the selector 4 and forwarded to the terminal 7. This analogue output corresponds to the IEC 268 standard, ie. There is a phantom power.

Wenn eine Spannung von 0 Volt und kein Dialogprotokoll erfasst wird, wird das analoge Ausgangssignal am Ausgang 4a der Auswahleinrichtung 4 an den ersten Anschluss 7 weitergeleitet. Dabei wird davon ausgegangen, dass es sich bei diesem Mikrofon um ein dynamisches Mikrofon handelt.When a voltage of 0 volts and no dialogue protocol is detected, the analog output signal at the output 4a of the selector 4 is forwarded to the first terminal 7. It is assumed that this microphone is a dynamic microphone.

Um eine Spannung von 0 Volt zu detektieren, weist die Detektionsvorrichtung eine interne Spannungsversorgung, wie beispielsweise eine Batterie, zur Versorgung der Vorrichtung auf. Der Detektionskreis mit der internen Spannungsversorgung kann entweder über einen Schalter an dem Mikrofon eingeschaltet werden oder aber automatisch beim Einstecken des Mikrofons in einen XLR-Stecker eingeschaltet werden.To detect a voltage of 0 volts, the detection device has an internal power supply, such as a battery, for powering the device. The detection circuit with the internal power supply can either be switched on via a switch on the microphone or automatically switched on when plugging the microphone into an XLR plug.

Wenn an dem Anschluss 7 eine Spannung von 0 Volt detektiert wird, wird das Kapselsignal des Mikrofons direkt von der Auswahleinrichtung 4 zum Anschluss 7 durchgeschaltet.When a voltage of 0 volts is detected at the terminal 7, the capsule signal of the microphone is directly switched from the selector 4 to the terminal 7.

Gemäß einem vierten, erfindungsgemäßen Ausführungsbeispiel weist die Detektionsvorrichtung gemäß dem ersten Ausführungsbeispiel ferner eine Einheit zur Betriebsspannungserfassung, einen Analog/Digital-Wandler mit einem Ausgangsprotokoll gemäß der AES 42 Norm auf. Des weiteren weist die Auswahleinrichtung 4 einen Schalter zum Einschalten bzw. Kontaktieren des analogen oder digitalen Ausgangs 4a, 4b entsprechend dem detektierten externen Signalverarbeitungsgerät auf. Damit wird eine Sendererkennung ermöglicht, d.h. die Detektionsvorrichtung erkennt, von welchem Gerät (analog oder digital) das Mikrofon mit der benötigten Spannung versorgt wird.According to a fourth embodiment of the invention, the detection device according to the first embodiment further comprises a unit for operating voltage detection, an analog / digital converter with an output protocol according to the AES 42 norm. Furthermore, the selection device 4 has a switch for switching on or contacting the analog or digital output 4a, 4b in accordance with the detected external signal processing device. This enables transmitter detection, i. the detection device detects from which device (analog or digital) the microphone is supplied with the required voltage.

Hierbei ist gemäß dem vierten Ausführungsbeispiel die Detektionsvorrichtung in dem Gehäuse des Mikrofons angeordnet.Here, according to the fourth embodiment, the detection device is arranged in the housing of the microphone.

Gemäß einem fünften, erfindungsgemäßen Ausführungsbeispiel ist die Detektionsvorrichtung und wahlweise der Analog/Digital-Wandler 8 in einem getrennten Gehäuse mit einem XLR-Stecker angebracht, so dass das Mikrofon über dem XLR-Stecker mit einem externen Signalverarbeitungsgerät verbunden werden kann.According to a fifth embodiment of the invention, the detection device and optionally the analog to digital converter 8 are mounted in a separate housing with an XLR plug so that the microphone above the XLR plug can be connected to an external signal processing device.

Die Funktion der Detektionsvorrichtung entspricht dabei der Funktion der Detektionsvorrichtung gemäß dem ersten und zweiten Ausführungsbeispiel.The function of the detection device corresponds to the function of the detection device according to the first and second embodiments.

Gemäß einem sechsten, erfindungsgemäßen Ausführungsbeispiel ist die Detektionsvorrichtung sowie wahlweise der Analog/Digital-Wandler 8 in einem Female-XLR-Stecker eines Mikrofonkabels angeordnet. Dabei kann die Detektionsvorrichtung an dem Female-XLR-Eingang fest für ein digitales oder analoges Mikrofon eingestellt oder wahlweise auch umschaltbar ausgeführt sein.According to a sixth embodiment of the invention, the detection device and optionally the analog / digital converter 8 is arranged in a female XLR connector of a microphone cable. In this case, the detection device can be set to the female XLR input fixed for a digital or analog microphone or optionally also be switched over.

Ferner kann der Female-XLR-Stecker eine Anzeigeneinrichtung aufweisen, welche entsprechend der Auswahl der Auswahleinrichtung 4 anzeigt, ob das Mikrofon an einem digitalen oder analogen Signalverarbeitungsgerät angeschlossen ist.Further, the female XLR connector may include a display device which, according to the selection of the selector 4, indicates whether the microphone is connected to a digital or analog signal processing device.

Gemäß einem achten, erfindungsgemäßen Ausführungsbeispiel der Erfindung weist ein in dem dritten Ausführungsbeispiel beschriebenes Mikrofon eine Anzeigeneinrichtung auf, welche anzeigt, ob das Mikrofon an einem analogen oder digitalen Signalverarbeitungsgerät angeschlossen ist.According to an eighth embodiment of the invention, a microphone described in the third embodiment has a display device which indicates whether the microphone is connected to an analog or digital signal processing device.

Gemäß einem neunten, nicht beanspruchten Ausführungsbeispiel weist ein Audio-Signalverarbeitungsgerät eine Detektionsvorrichtung gemäß dem zweiten Ausführungsbeispiel auf. Dabei überprüft die Detektionsvorrichtung, ob ein analoges oder digitales Mikrofon an das Audio-Signalverarbeitungsgerät angeschlossen ist. In diesem Fall wird das Mikrofon als Quelle bzw. Sender angesehen.According to a ninth, unclaimed embodiment, an audio signal processing apparatus comprises a detection apparatus according to the second embodiment. The detection device checks whether an analog or digital microphone is connected to the audio signal processing device. In this case, the microphone is regarded as a source or transmitter.

Wenn die Erfassungseinrichtung 6 und die Bestimmungseinrichtung 5 0 Volt an dem Anschluss 7 erfasst, wird eine Signalspannung für ein dynamisches Mikrofon, d.h. ≥10 mV vorgehalten. Anschließend wird eine ohmsche Prüfung durchgeführt, wobei der Widerstand > 200 Ω oder 500 Ω beträgt. Danach kann eine Signalstatistikprüfung durchgeführt werden, um festzustellen, ob es sich bei dem Signal um Sprache oder Musik handelt. Die Anschaltbedingungen können entsprechend den Eigenschaften des dynamischen Mikrofons ausgewählt werden.When the detector 6 and the determiner 5 detect 0 volts at the terminal 7, a signal voltage for a dynamic microphone, i. ≥10 mV. Subsequently, an ohmic test is carried out, wherein the resistance is> 200 Ω or 500 Ω. Thereafter, a signal statistics check may be performed to determine if the signal is voice or music. The connection conditions can be selected according to the characteristics of the dynamic microphone.

Wenn durch die Erfassungseinrichtung 6 und die Bestimmungseinrichtung 5 erfasst wird, dass die Spannung auf 10 Volt ansteigt, wird die ständige Stromaufnahme geprüft (12 Volt > 10 mA ≤ 300 mA). Dann wird der digitale Signalstrom (HP 500 kHz) geprüft. Bei einer Spannung von 12 Volt wird ein digitales Dialogprotokoll an das Mikrofon gesandt. Wenn die Detektionsvorrichtung anschließend eine positive Antwort erhält, wird die Anschaltbedingung für ein digitales Mikrofon auf der Basis der AES 42 Norm eingestellt. Wenn jedoch kein Datenstrom erfolgt, wird geprüft, ob die Spannung auf 48 Volt bei einem Strom von ≤10 mA steigt. Anschließend wird eine Einschaltbedingung entsprechend einem analogen Mikrofon auf der Basis der IEC 268 Norm eingestellt. Gegebenenfalls kann eine Signalstatistikprüfung durchgeführt werden.When it is detected by the detection means 6 and the determining means 5 that the voltage rises to 10 volts, the constant current consumption is checked (12 volts> 10 mA ≦ 300 mA). Then the digital signal current (HP 500 kHz) is checked. At a voltage of 12 volts, a digital dialog protocol is sent to the microphone. When the detection device subsequently receives a positive response, the turn-on condition for a digital microphone is set based on the AES 42 norm. However, if there is no data stream, it is checked if the voltage rises to 48 volts with a current of ≤10 mA. Then, a turn-on condition corresponding to an analog microphone is set based on the IEC 268 standard. If necessary, a signal statistics check can be carried out.

Bei HP ≥ 500 hHz wird immer ein digitales Signal von 6 MHz gesendet.At HP ≥ 500 hHz, a digital signal of 6 MHz is always sent.

Die Erfindung wurde zwar vorstehend nur in Bezug auf kabelgebundene Mikrofone und Signalverarbeitungsgeräte beschrieben, aber der Einsatz der Detektionsvorrichtung ist ebenfalls bei drahtlosen Mikrofonsystemen möglich, um zu Bestimmen, ob ein analoges oder digitales Mikrofon bzw. Signalverarbeitungsgerät angeschlossen ist. Hierbei ist es unerheblich, ob die drahtlose Übertragung analog oder digital erfolgt, da es für die erfindungsgemäße Detektionsvorrichtung lediglich maßgeblich ist, welches Signal am Ausgang des Empfängers anliegt.While the invention has been described above only with respect to wired microphones and signal processing devices, the use of the detection device is also possible with wireless microphone systems to determine if an analog or digital microphone or signal processing device is connected. It is irrelevant whether the wireless transmission is analog or digital, since it is only relevant for the detection device according to the invention, which signal is present at the output of the receiver.

Claims (7)

  1. A microphone apparatus comprising a microphone and
    an integrated detection apparatus for determining whether an analogue or digital audio signal processing apparatus is externally connected to the detection apparatus, comprising:
    - a sensing device (6) for sensing an external signal,
    - a determining device (5) for determining whether the sensed external signal was transmitted by a digital or analogue audio signal processing apparatus and for outputting a corresponding determination signal, and
    - a selecting device (4) for selecting an analogue or digital connection (4a, 4b) according to the determination signal,
    - a first connection (7),
    wherein the analogue and digital connection (4a, 4b) is configured to receive an analogue or a digital signal from the microphone and wherein the selecting device (4) is configured to output the selected signal to the first connection (7).
  2. An XLR connector apparatus comprising:
    an integrated detection apparatus for determining whether an analogue or digital audio signal processing apparatus is externally connected to the detection apparatus, comprising:
    - a sensing device (6) for sensing an external signal,
    - a determining device (5) for determining whether the sensed external signal was transmitted by a digital or analogue audio signal processing apparatus and for outputting a corresponding determination signal, and
    - a selecting device (4) for selecting an analogue or digital connection (4a, 4b) according to the determination signal,
    - a first connection (7),
    wherein the selecting device (4) is configured to forward a signal received by the first connection (7) to the analogue or digital connection (4a, 4b) according to the determination signal.
  3. An apparatus according to claim 1 or 2, wherein the sensing device (6) is configured to sense the voltage applied to the first connection (7).
  4. An apparatus according to claim 3, wherein
    - the determining device (5) has an evaluation unit for evaluating a dialogue protocol.
  5. An apparatus according to claim 1, further comprising an internal voltage supply.
  6. An apparatus according to any one of the preceding claims, further comprising
    a display device for indicating whether the analogue or digital connection (4a, 4b) is selected.
  7. A wireless microphone receiving apparatus comprising
    an integrated detection apparatus for determining whether an analogue or digital audio signal processing apparatus is externally connected to the detection apparatus, comprising
    - a sensing device (6) for sensing an external signal,
    - a determining device (5) for determining whether the sensed external signal was transmitted by a digital or analogue audio signal processing apparatus and for outputting a corresponding determination signal, and
    - a selecting device (4) for selecting an analogue or digital connection (4a, 4b) according to the determination signal,
    - a first connection (7),
    wherein the analogue and digital connection (4a, 4b) is configured to receive a wirelessly transmitted analogue or digital signal from an external microphone unit and wherein the selecting device (4) is configured to output the selected signal to the first connection (7).
EP04723180A 2003-05-07 2004-03-25 Microphone device, XLR connector device and receiv device for wireless microphone Expired - Lifetime EP1623599B1 (en)

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DE502004011925D1 (en) 2011-01-05
US7574011B2 (en) 2009-08-11
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RU2005138026A (en) 2006-05-10
JP4413920B2 (en) 2010-02-10

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