EP1623599A1 - Dispositif de detection - Google Patents

Dispositif de detection

Info

Publication number
EP1623599A1
EP1623599A1 EP04723180A EP04723180A EP1623599A1 EP 1623599 A1 EP1623599 A1 EP 1623599A1 EP 04723180 A EP04723180 A EP 04723180A EP 04723180 A EP04723180 A EP 04723180A EP 1623599 A1 EP1623599 A1 EP 1623599A1
Authority
EP
European Patent Office
Prior art keywords
analog
digital
detection device
connection
signal
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
EP04723180A
Other languages
German (de)
English (en)
Other versions
EP1623599B1 (fr
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
Original Assignee
Sennheiser Electronic GmbH and Co KG
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 Sennheiser Electronic GmbH and Co KG filed Critical Sennheiser Electronic GmbH and Co KG
Publication of EP1623599A1 publication Critical patent/EP1623599A1/fr
Application granted granted Critical
Publication of EP1623599B1 publication Critical patent/EP1623599B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

Definitions

  • the invention relates to a detection device for determining whether a digital or analog audio signal processing device is connected to the detection device; a microphone with such a detection device; an XLR connector with such a detection device and an audio signal processing device with such a detection device.
  • Microphones with both an analog and microphones with a digital output are known.
  • the interface of a microphone with analog output is described in the IEC 268 standard 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 sound transducers generally pass the unamplified output signal directly on to subsequent audio signal processing devices. Such microphones therefore do not require any 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 the subsequent audio signal processing devices.
  • the following audio signal processing devices can contain, for example, microphone (pre) amplifiers, amplifiers, mixing consoles, recording devices with magnetic tape, hard disk recorders, so-called stage boxes and other signal processing devices, which include amplifiers, analog / digital converters (DAC), filters or the like.
  • pre microphone
  • DAC analog / digital converters
  • the cable between the microphone and the subsequent signal processing which is usually used to transmit the audio signals from the microphone to the subsequent signal processing, is also used to provide the signal voltage for the microphone by the subsequent signal processing. For analog microphones and analog signal processing devices, this voltage is 48 volts.
  • AES 42 For microphones with digital signal output, however, a supply voltage of 10 volts is specified in the above-mentioned AES 42 standard. As described above, this supply voltage for the digital signal output of a microphone is made available by the subsequent signal processing device via the cable between the microphone and the signal processing device.
  • the standard for the digital interface between microphone and signal processing device (AES 42) also provides for the transmission of a dialog protocol (DPP) for status determination and setting of the corresponding - ⁇ -
  • DPP dialog protocol
  • the parameters such as sample rate, impact sound filter and the like.
  • the object of the invention is therefore to expand the possible uses of digital and analog microphones and analog or digital signal processing devices.
  • the invention is based on the idea of providing a detection device which is able to distinguish whether a connected microphone or audio signal processing device works on an analog or digital basis. An analog or digital connection is selected in accordance with this determination.
  • a detection device which has 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 determination device determines whether the detected external signal was transmitted by an analog or digital audio signal processing device and forwards a corresponding determination signal to the selection device.
  • the selection device selects either an analog or digital connection depending on the determination signal.
  • the user can easily combine digital and analog microphones and audio signal processing devices. This means that safe operation without disruptions is possible in any case.
  • the detection device has a first connection.
  • An analog and digital output signal of a microphone can be connected to the analog and digital connection.
  • the selection device then outputs the signal of a microphone received via the selected connection to the connection.
  • the detection device according to the invention can thus be coupled to a microphone both with an analog and with a digital output, the detection device outputing either the analog or the digital output signal of the microphone depending on the external signal.
  • the detection device has a first connection.
  • the selection device forwards a signal received by the first connection to the analog or digital connection in accordance with the determination signal.
  • an analog or digital output signal of a microphone can be automatically fed to the corresponding analog or digital further signal processing by means of the selection device.
  • the detection device is suitable for detecting the voltage applied to the first connection. The decision as to whether an analog or digital signal is applied to the detection device can thus be made in accordance with the level of the voltage present.
  • the detection device and the determination device are designed to detect and evaluate a digital dialog protocol.
  • Fig. 1 shows a detection device according to a first embodiment
  • Fig. 2 shows a detection device according to a second embodiment.
  • FIG. 1 shows a block diagram of a detection device according to a first exemplary embodiment of the invention.
  • 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 connection 7 can be connected to an external audio signal processing device, while the second connection 9 can be connected to an external microphone.
  • the external audio signal processing device either supplies a signal voltage of 10 volts - if it is a digital output - or an output voltage of 48 volts - if it is an analog output.
  • the detection device 6 detects the voltage present at the first connection 7, which - 1> -
  • the che is characteristic of the analog or digital operating mode, and forwards this to the determination device 5.
  • the level of the applied voltage is determined in the determination device 5 and passed on to the selection device 4.
  • the selection device selects the analog connection 4a if the voltage is 48 volts and the digital connection 4b if the voltage is 10 volts.
  • the analog or digital output signal of a microphone is selected according to the fact whether the externally connected signal processing device works analog or digital.
  • FIG. 2 shows a detection device according to a 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 connection 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 passed on 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 uses these signals to select either the analog connection 4a or the digital connection 4b and forwards the signals received by the external microphone via the first connection 7 to the selected connection 4a, 4b.
  • the analog connection 4a and the digital connection 4b can be connected to a corresponding processing of the analog or digital signals in the signal processing device for further processing.
  • a microphone has the detection device according to the first exemplary embodiment. With the aid of the detection device, the microphone can thus determine or identify whether it is connected to an analog or digital signal processing device, such as a mixer is connected. According to the identification, the microphone provides an analog signal in accordance with the IEC 268 standard or a digital signal in accordance with the AES 42 standard if it is connected to an analog or digital signal processing device. If the detection and determination device receives an applied voltage of 10 volts and a digital dialog protocol DPP according to the AES 42 standard, the selection device 4 provides a digital output signal according to the AES 42 standard at the connection 7.
  • an analog output signal from the selection device 4 is provided at the connection 7.
  • the analog connection 4a is selected by the selection device 4 and forwarded to the connection 7.
  • This analog output signal corresponds to the IEC 268 standard, i.e. there is phantom power.
  • the analog output signal at the output 4a of the selection device 4 is forwarded to the first connection 7. It is assumed that this microphone is a dynamic microphone.
  • the detection device In order to detect a voltage of 0 volts, the detection device has an internal voltage supply, such as a battery, for supplying 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 the microphone is plugged into an XLR connector. - o -
  • the capsule signal of the microphone is switched directly from the selection device 4 to the connection 7.
  • the detection device also has a unit for operating voltage detection, an analog / digital converter with an output protocol according to the AES 42 standard. 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.e. the detection device recognizes 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 / digital converter 8 are mounted in a separate housing with an XLR plug, so that the microphone can be connected to an external signal processing device via the XLR plug.
  • the function of the detection device corresponds to the function of the detection device according to the first and second exemplary embodiments.
  • the detection device and optionally the analog / digital converter 8 are arranged in a female XLR plug of a microphone cable.
  • the detection device at the female XLR input can be permanently set for a digital or analog microphone, or alternatively can be designed to be switchable.
  • the female XLR connector can have a display device which, in accordance with the selection of the selection device 4, indicates whether the microphone is connected to a digital or analog signal processing device.
  • a microphone described in the first, second and third exemplary embodiment has a display device which indicates whether the microphone is connected to an analog or digital signal processing device.
  • an audio signal processing device has a detection device according to the second exemplary embodiment.
  • the detection device checks whether an analog or digital microphone is connected to the audio signal processing device.
  • the microphone is viewed as the source or transmitter.
  • a signal voltage for a dynamic microphone i.e. > 10 mV available.
  • An ohmic test is then carried out, the resistance being> 200 ⁇ or 500 ⁇ .
  • a signal statistics check can then be performed to determine whether the signal is speech or music.
  • the connection conditions can be selected according to the properties 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. If the detection device subsequently receives a positive response, the connection condition for a digital microphone is set on the basis of the AES 42 standard. However, if there is no data stream, it is checked whether the voltage rises to 48 volts with a current of ⁇ 10 mA. A switch-on condition is then set in accordance with an analog microphone based on the IEC 268 standard. If necessary, a signal statistics check can be carried out.

Landscapes

  • 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)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Liquid Developers In Electrophotography (AREA)
  • Mobile Radio Communication Systems (AREA)
EP04723180A 2003-05-07 2004-03-25 Dispositif de microphone, dispositif de connecteur XLR et dispositif de récepteur pour microphone sans fils Expired - Lifetime EP1623599B1 (fr)

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 (fr) 2003-05-07 2004-03-25 Dispositif de detection

Publications (2)

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

Family

ID=33394188

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04723180A Expired - Lifetime EP1623599B1 (fr) 2003-05-07 2004-03-25 Dispositif de microphone, dispositif de connecteur XLR et dispositif de récepteur pour microphone sans fils

Country Status (8)

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

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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
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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 (fr) * 2010-07-18 2012-01-26 Bose Corporation Syntonisation d'un transducteur électro-acoustique et stockage de données
US20130028423A1 (en) * 2011-07-25 2013-01-31 Guido Odendahl Three dimensional sound positioning system
US20150031416A1 (en) 2013-07-23 2015-01-29 Motorola Mobility Llc Method and Device For Command Phrase Validation
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
US20060215856A1 (en) 2006-09-28
JP2006525702A (ja) 2006-11-09
JP4413920B2 (ja) 2010-02-10
CA2523931C (fr) 2010-10-19
EP1623599B1 (fr) 2010-11-24
RU2005138026A (ru) 2006-05-10
WO2004100601A1 (fr) 2004-11-18
CA2523931A1 (fr) 2004-11-18
ATE489815T1 (de) 2010-12-15
RU2340123C2 (ru) 2008-11-27
DE502004011925D1 (de) 2011-01-05
DE10320190B4 (de) 2005-07-07
DE10320190A1 (de) 2004-12-02
US7574011B2 (en) 2009-08-11

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