EP1623599B1 - Mikrofonvorrichtung, XLR-Steckervorrichtung und drathlose Mikrofonempfangsvorrichtung - Google Patents

Mikrofonvorrichtung, XLR-Steckervorrichtung und drathlose Mikrofonempfangsvorrichtung 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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EP
European Patent Office
Prior art keywords
digital
signal
microphone
analogue
connection
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP04723180A
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German (de)
English (en)
French (fr)
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EP1623599A1 (de
Inventor
Rolf Meyer
Klaus-Michael Polten
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.)
Sennheiser Electronic GmbH and Co KG
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Sennheiser Electronic GmbH and Co KG
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Publication of EP1623599A1 publication Critical patent/EP1623599A1/de
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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.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Liquid Developers In Electrophotography (AREA)
EP04723180A 2003-05-07 2004-03-25 Mikrofonvorrichtung, XLR-Steckervorrichtung und drathlose Mikrofonempfangsvorrichtung Expired - Lifetime EP1623599B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10320190A DE10320190B4 (de) 2003-05-07 2003-05-07 Detektionsvorrichtung
PCT/EP2004/003150 WO2004100601A1 (de) 2003-05-07 2004-03-25 Detektionsvorrichtung

Publications (2)

Publication Number Publication Date
EP1623599A1 EP1623599A1 (de) 2006-02-08
EP1623599B1 true EP1623599B1 (de) 2010-11-24

Family

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EP04723180A Expired - Lifetime EP1623599B1 (de) 2003-05-07 2004-03-25 Mikrofonvorrichtung, XLR-Steckervorrichtung und drathlose Mikrofonempfangsvorrichtung

Country Status (8)

Country Link
US (1) US7574011B2 (ja)
EP (1) EP1623599B1 (ja)
JP (1) JP4413920B2 (ja)
AT (1) ATE489815T1 (ja)
CA (1) CA2523931C (ja)
DE (2) DE10320190B4 (ja)
RU (1) RU2340123C2 (ja)
WO (1) WO2004100601A1 (ja)

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JP5186732B2 (ja) * 2006-05-19 2013-04-24 船井電機株式会社 テレビジョン受像機
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US7912501B2 (en) 2007-01-05 2011-03-22 Apple Inc. Audio I/O headset plug and plug detection circuitry
CN101303640B (zh) * 2007-05-11 2010-06-09 鸿富锦精密工业（深圳）有限公司 音频信号处理电路及与其配套的音频输出装置
US7961895B2 (en) * 2007-05-15 2011-06-14 Fortemedia, Inc. Audio interface device and method
US20080298607A1 (en) 2007-05-30 2008-12-04 Fortemedia, Inc. Audio interface device and method
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US20110112666A1 (en) * 2009-11-11 2011-05-12 Mcfarland Brian System and Method for Interfacing an Audio Connector and Jack at an Information Handling System
US8494185B2 (en) 2010-07-18 2013-07-23 Bose Corporation Electro-acoustic transducer tuning and data storage
US8494184B2 (en) 2010-07-18 2013-07-23 Bose Corporation Digital data transfer via audio signal conductors
WO2012012315A1 (en) * 2010-07-18 2012-01-26 Bose Corporation Electro-acoustic transducer tuning and data storage
US20130028423A1 (en) * 2011-07-25 2013-01-31 Guido Odendahl Three dimensional sound positioning system
US20150032238A1 (en) * 2013-07-23 2015-01-29 Motorola Mobility Llc Method and Device for Audio Input Routing
CN103686535B (zh) * 2013-12-02 2017-11-10 Tcl集团股份有限公司 自动识别耳机麦克风与卡拉ok设备的终端及识别方法
US10277275B2 (en) * 2015-09-08 2019-04-30 Google Llc Audio media streaming device
US9736531B2 (en) 2015-09-08 2017-08-15 Google Inc. Video media streaming device
CN107920304B (zh) * 2017-11-28 2020-04-24 广东小天才科技有限公司 用于无线麦克风的报警方法、系统、麦克风及存储介质
GB2579105B (en) * 2018-11-16 2021-10-13 Cirrus Logic Int Semiconductor Ltd A microphone device and a system comprising the microphone device
US20230156385A1 (en) * 2021-11-12 2023-05-18 Freedman Electronics Pty Ltd Microphone system and methods

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Also Published As

Publication number Publication date
ATE489815T1 (de) 2010-12-15
DE10320190A1 (de) 2004-12-02
US7574011B2 (en) 2009-08-11
US20060215856A1 (en) 2006-09-28
JP4413920B2 (ja) 2010-02-10
RU2005138026A (ru) 2006-05-10
DE10320190B4 (de) 2005-07-07
WO2004100601A1 (de) 2004-11-18
EP1623599A1 (de) 2006-02-08
JP2006525702A (ja) 2006-11-09
CA2523931C (en) 2010-10-19
CA2523931A1 (en) 2004-11-18
RU2340123C2 (ru) 2008-11-27
DE502004011925D1 (de) 2011-01-05

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