CN114786112B - Equipment detection device of external phantom power supply simulation microphone - Google Patents
Equipment detection device of external phantom power supply simulation microphone Download PDFInfo
- Publication number
- CN114786112B CN114786112B CN202210707794.XA CN202210707794A CN114786112B CN 114786112 B CN114786112 B CN 114786112B CN 202210707794 A CN202210707794 A CN 202210707794A CN 114786112 B CN114786112 B CN 114786112B
- Authority
- CN
- China
- Prior art keywords
- capacitor
- phantom
- resistance
- module
- resistor
- 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.)
- Active
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 32
- 238000004088 simulation Methods 0.000 title claims abstract description 20
- 239000003990 capacitor Substances 0.000 claims description 71
- 230000005236 sound signal Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000003321 amplification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/004—Monitoring arrangements; Testing arrangements for microphones
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)
- Circuit For Audible Band Transducer (AREA)
Abstract
The invention discloses a device detection device externally connected with a phantom power supply simulation microphone, which comprises a phantom power supply module, a phantom interface module, a detection module, a comparison module and a decoding module, wherein the input end of the phantom power supply module is externally connected with a conference host, the phantom power supply module, the detection module and the comparison module are all connected with one end of the phantom interface module, the other end of the phantom interface module is connected with the phantom simulation microphone, the output end of the detection module is connected with an MCU, and the comparison module is connected with the conference host through the decoding module. In the invention, the phantom power supply module supplies power to the phantom simulation microphone through the phantom interface module, the audio signal collected by the phantom simulation microphone is processed through the comparison module and the decoding module and is transmitted to the conference host, and meanwhile, the detection module detects whether the phantom simulation microphone is on line or not and feeds back the audio signal to the conference host, so that the conference host is compatible with the phantom simulation microphone.
Description
Technical Field
The invention relates to the technical field of audio input equipment, in particular to an equipment detection device externally connected with a phantom power supply simulation microphone.
Background
The conference host and the conference microphone of the current digital conference system are used together, and are generally incompatible with phantom analog microphones. Under normal conditions, a common phantom analog microphone is directly connected to a sound console or an analog power amplifier host with a phantom power supply function to perform audio amplification. However, the number of phantom analog microphones connected to the sound console or the analog power amplifier host with the phantom power supply function is not shown, and the conference management personnel are not convenient to manage the microphones.
The digital conference host is connected with the conference microphones, and the digital conference host can detect each conference microphone and display the number of the microphones, but if the fantasy analog microphone is directly connected into the digital conference system, the analog microphone can not be detected whether to be on-line in the digital conference system.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a device detection device externally connected with a phantom power supply analog microphone, which can solve the problem that a conference host cannot detect whether the phantom analog microphone is on line in a digital conference system.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides an equipment detection device of external phantom power supply simulation microphone which characterized in that: the conference system comprises a phantom power supply module, a phantom interface module, a detection module, a comparison module and a decoding module, wherein the input end of the phantom power supply module is externally connected with a conference host, the output end of the phantom power supply module, the input end of the detection module and the input end of the comparison module are all connected with one end of the phantom interface module, the other end of the phantom interface module is connected with a phantom simulation microphone, the output end of the detection module is connected with an MCU (microprogrammed control unit), the MCU is connected with the conference host, the output end of the comparison module is connected with the input end of the decoding module, and the output end of the decoding module is connected with the audio input end of the conference host.
Preferably, the phantom power supply module includes an inductor L2, an inductor L3, a capacitor C16, a capacitor C17, a capacitor C19, a capacitor C22, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a resistor R16, a diode D5, a diode D6, and a power chip U2, one end of the inductor L3 is connected to a 36V power supply port of the conference host, the other end of the inductor L3, one end of the capacitor C19, one end of the resistor R13, and one end of the inductor L2 are all connected to a power input terminal VIN of the power chip U2, the other end of the resistor R13 and one end of the resistor R15 are all connected to an enable terminal EN of the power chip U2, the other end of the inductor L2 and an anode of the diode D6 are all connected to a switch control terminal SW of the power chip U2, a cathode of the diode D6, one end of the capacitor C16, one end of the capacitor C17, and one end of the resistor R12 are all connected to an anode of the diode D5, a cathode of the diode D5 is connected to an output terminal of the phantom interface module, a resistor R12, an output terminal of the other terminal of the capacitor R2, and an output terminal of the capacitor R16 are connected to an output terminal of the capacitor R2, and a feedback terminal of the capacitor R2, and a resistor R15, the other terminal of the capacitor R16 are connected to ground.
Preferably, the phantom interface module includes a cannon base J1, a resistor R8, a resistor R9, a capacitor C8, a capacitor C9 and a capacitor C10, wherein one end of the capacitor C8, one end of the capacitor C9 and one end of the capacitor C10, one end of the resistor R8 and one end of the resistor R9 are all connected to a negative electrode of the diode D5, a second output end of the cannon base J1, one end of the resistor R8 and an input end of the detection module are all connected to a forward input end of the comparison module, the other end of the resistor R9 and a third output end of the cannon base J1 are all connected to a reverse input end of the comparison module, an input end of the cannon base J1 is connected to the phantom analog microphone, and a first output end of the cannon base J1, the other end of the capacitor C8, the other end of the capacitor C9 and the other end of the capacitor C10 are all grounded.
Preferably, the detection module includes resistance R1, resistance R2 and resistance R3, the second output of cannon seat J1, the one end of resistance R8 and the forward input of comparison module all are connected with resistance R1's one end, resistance R1's the other end and resistance R3's one end all are connected with resistance R2's one end, resistance R2's the other end is connected with MCU's ADC sense terminal.
Preferably, the comparison module includes electric capacity C1, electric capacity C2, electric capacity C6, electric capacity C7, resistance R4, resistance R5, resistance R6, resistance R7 and comparator U10A, resistance R9's the other end and the third output of cannon seat J1 all are connected with electric capacity C2's one end, cannon seat J1's second output, resistance R8's one end and resistance R1's one end all are connected with electric capacity C6's one end, electric capacity C6's the other end is connected with resistance R6's one end, electric capacity C2's the other end and resistance R5's one end are connected, resistance R6's the other end, electric capacity C7's one end and resistance R7's one end all are connected with comparator U10A's forward input end, resistance R5's the other end, resistance R4's one end and electric capacity C1's one end all are connected with comparator U10A's reverse input end, comparator U10A's the output, resistance R4's the other end and electric capacity C1's the other end all with the module of decoding.
Preferably, the decoding module includes an audio codec chip U1, and the output end of the comparator U10A, the other end of the resistor R4, and the other end of the capacitor C1 are connected to the audio input end of the conference host through the audio codec chip U1.
Compared with the prior art, the invention has the beneficial effects that: a phantom power supply module supplies power to a phantom simulation microphone through a phantom interface module, an audio signal collected by the phantom simulation microphone is processed through a comparison module and a decoding module and is transmitted to a conference host, and meanwhile, a detection module detects whether the phantom simulation microphone is on line or not and feeds back the signal to the conference host, so that the digital conference host is compatible with the phantom simulation microphone.
Drawings
Fig. 1 is a circuit diagram of a detection module according to the present invention.
Fig. 2 is a circuit diagram of a phantom power module according to the present invention.
Fig. 3 is a circuit diagram of a comparison module according to the present invention.
Fig. 4 is a circuit diagram of a decoding module according to the present invention.
Fig. 5 is a schematic diagram of an actual application of the device detection apparatus of the external phantom power supply analog microphone according to the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it should be understood that they are presented herein only to illustrate and explain the present invention and not to limit the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention will be further described with reference to the accompanying drawings and the detailed description below:
as shown in fig. 1 to 5, an apparatus detecting device externally connected with a phantom power supply analog microphone comprises a phantom power supply module, a phantom interface module, a detecting module, a comparing module and a decoding module, wherein an input end of the phantom power supply module is externally connected with a conference host, an output end of the phantom power supply module, an input end of the detecting module and an input end of the comparing module are all connected with one end of the phantom interface module, the other end of the phantom interface module is connected with the phantom analog microphone, an output end of the detecting module is connected with an MCU, the MCU is connected with the conference host, an output end of the comparing module is connected with an input end of the decoding module, and an output end of the decoding module is connected with an audio input end of the conference host. In this embodiment, a phantom power supply module is connected to a phantom interface module, so that energy is supplied to a phantom analog microphone through the phantom interface module, an audio signal collected by the phantom analog microphone is transmitted to a comparison module through the phantom interface module, then transmitted to a decoding module by the comparison module for processing, and finally transmitted to a conference host through the decoding module, wherein the audio signal is transmitted through a circuit connected between the modules, and meanwhile, a detection module is connected to the phantom interface module to acquire a change of the electrical signal, so that the change of the electrical signal is fed back to an ADC detection port (pin) of an MCU, and meanwhile, the MCU is connected to the conference host, so that the MCU detects whether the phantom analog microphone is online, and then the MCU feeds back a detection result to the conference host, and the number of online phantom analog microphones is displayed on a display screen of the conference host.
Specifically, the phantom power supply module comprises an inductor L2, an inductor L3, a capacitor C16, a capacitor C17, a capacitor C19, a capacitor C22, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a resistor R16, a diode D5, a diode D6 and a power chip U2, wherein one end of the inductor L3 is connected to a 36V power supply port of the conference host, the other end of the inductor L3, one end of the capacitor C19, one end of the resistor R13 and one end of the inductor L2 are all connected to a power input terminal VIN of the power chip U2, the other end of the resistor R13 and one end of the resistor R15 are all connected to an enable terminal EN of the power chip U2, the other end of the inductor L2 and the anode of the diode D6 are all connected to a switch control terminal SW of the power chip U2, the cathode of the diode D6, one end of the capacitor C16, one end of the capacitor C17 and one end of the resistor R12 are all connected to the anode of the diode D5, the cathode of the diode D5 is connected to an output terminal of the phantom interface module, the other end of the resistor R12 is connected to the output terminal of the capacitor R2, the capacitor R14, and the other end of the capacitor R2 are connected to the output terminal of the capacitor R16, and the output terminal of the capacitor C14, and the comparator C16, and the comparator R2 are connected to the output terminal of the capacitor C14. Preferably, the phantom interface module includes a cannon base J1, a resistor R8, a resistor R9, a capacitor C8, a capacitor C9 and a capacitor C10, wherein one end of the capacitor C8, one end of the capacitor C9 and one end of the capacitor C10, one end of the resistor R8 and one end of the resistor R9 are all connected to a negative electrode of the diode D5, a second output end of the cannon base J1, one end of the resistor R8 and an input end of the detection module are all connected to a forward input end of the comparison module, the other end of the resistor R9 and a third output end of the cannon base J1 are all connected to a reverse input end of the comparison module, an input end of the cannon base J1 is connected to the phantom analog microphone, and a first output end of the cannon base J1, the other end of the capacitor C8, the other end of the capacitor C9 and the other end of the capacitor C10 are all grounded. Simultaneously, the detection module includes resistance R1, resistance R2 and resistance R3, the second output of cannon seat J1, the one end of resistance R8 and the forward input of comparison module all are connected with resistance R1's one end, resistance R1's the other end and resistance R3's one end all are connected with resistance R2's one end, resistance R2's the other end is connected with MCU's ADC sense terminal.
Preferably, the comparison module includes electric capacity C1, electric capacity C2, electric capacity C6, electric capacity C7, resistance R4, resistance R5, resistance R6, resistance R7 and comparator U10A, resistance R9's the other end and the third output of cannon seat J1 all are connected with electric capacity C2's one end, cannon seat J1's second output, resistance R8's one end and resistance R1's one end all are connected with electric capacity C6's one end, electric capacity C6's the other end is connected with resistance R6's one end, electric capacity C2's the other end and resistance R5's one end are connected, resistance R6's the other end, electric capacity C7's one end and resistance R7's one end all are connected with comparator U10A's forward input end, resistance R5's the other end, resistance R4's one end and electric capacity C1's one end all are connected with comparator U10A's reverse input end, comparator U10A's the output, resistance R4's the other end and electric capacity C1's the other end all with the module of decoding. The decoding module comprises an audio coding and decoding chip U1, and the output end of the comparator U10A, the other end of the resistor R4 and the other end of the capacitor C1 are connected with the audio input end of the conference host through the audio coding and decoding chip U1.
In this embodiment, when the phantom analog microphone is connected to the cannon base J1, the 36V power supply provided by the power supply port of the conference host is processed into 48V dc power by the phantom power supply module, and the bias voltage is provided to the phantom analog microphone through the resistor R8 and the resistor R9, respectively. When the phantom analog microphone is not connected to the cannon base J1, as shown in fig. 1, a 48v current signal connection resistor R9 is connected to a point a, a voltage to a point B is 48V, a resistor R3 is connected, the voltage at the point E is 2.2V through the resistor R1 to GND, an electric signal flows through the resistor R2, and an ADC sampling voltage at a point F is 2.2V; when connecting phantom simulation microphone in cannon seat J1, 48V direct current at A point provides bias voltage for phantom simulation microphone through resistance R8 and resistance R9 respectively, because cannon seat J1 has connected phantom simulation microphone, be rather with external load, the voltage of B point and C point can reduce to voltage is 30V, connecting resistance R3, through resistance R1 to GND, the voltage at E point is 1.46V, the signal of telecommunication flows through resistance R2, ADC sampling voltage at F point is 1.46V. Therefore, the MCU detects two voltage values with obvious difference before and after the analog microphone is connected at the point F. Therefore, when the detected voltage of the MCU at the point F is lower than 2V, the cannon base J1 is judged to be connected with the phantom analog microphone, and the MCU can detect that the phantom analog microphone is connected, namely, the digital conference system can judge that the phantom analog microphone is connected on line, so that the digital conference host is connected. The computer logs in the digital conference system software to realize the digital conference management function for the digital conference host, the digital conference unit and the phantom analog microphone. Such as microphone sound amplification, microphone on-line number display, EQ adjustment, microphone sensitivity adjustment. When the voltage detected by the MCU at the point F is higher than 2V, the cannon base J1 is judged not to be connected with the phantom analog microphone, and the MCU can detect that the phantom analog microphone is not connected, namely, the digital conference system can judge that the phantom analog microphone is not connected online.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.
Claims (6)
1. The utility model provides an equipment detection device of external phantom power supply simulation microphone which characterized in that: the conference system comprises a phantom power supply module, a phantom interface module, a detection module, a comparison module and a decoding module, wherein the input end of the phantom power supply module is externally connected with a conference host, the output end of the phantom power supply module, the input end of the detection module and the input end of the comparison module are all connected with one end of the phantom interface module, the other end of the phantom interface module is connected with a phantom analog microphone, the output end of the detection module is connected with an MCU (microprogrammed control unit), the MCU is connected with the conference host, the output end of the comparison module is connected with the input end of the decoding module, and the output end of the decoding module is connected with the audio input end of the conference host; meanwhile, the detection module is connected with the phantom interface module to acquire the change of the electric signal, so that the change of the electric signal is fed back to an ADC detection port of the MCU, and meanwhile, the MCU is connected with the conference host to detect whether the phantom simulation microphone is on line or not, and then the MCU feeds back the detection result to the conference host.
2. The apparatus testing device of an external phantom-powered analog microphone according to claim 1, wherein: the phantom power supply module comprises an inductor L2, an inductor L3, a capacitor C16, a capacitor C17, a capacitor C19, a capacitor C22, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a resistor R16, a diode D5, a diode D6 and a power supply chip U2, wherein one end of the inductor L3 is connected with a 36V power supply port of the conference host, the other end of the inductor L3, one end of the capacitor C19, one end of the resistor R13 and one end of the inductor L2 are all connected with a power supply input end VIN of the power supply chip U2, the other end of the resistor R13 and one end of the resistor R15 are all connected with an enable end EN of the power supply chip U2, the other end of the inductor L2 and an anode of the diode D6 are all connected with a switch control end SW of the power supply chip U2, the cathode of the diode D6, one end of the capacitor C16, one end of the capacitor C17 and one end of the resistor R12 are all connected with an anode of the diode D5, the cathode of the diode D5 is connected with an output end of the phantom interface module, the other end of the capacitor R12 is connected with an output end of the capacitor R2, the capacitor R14, the other end of the capacitor R2 is connected with an output end of the capacitor R2, and a feedback resistor R16, and a feedback resistor R15 of the capacitor R2 are connected with an output end of the capacitor R2, and a comparator of the capacitor R15, and a feedback terminal of the capacitor R2, and a comparator.
3. The apparatus testing device of an external phantom-powered analog microphone according to claim 2, wherein: the phantom interface module comprises a cannon base J1, a resistor R8, a resistor R9, a capacitor C8, a capacitor C9 and a capacitor C10, wherein one end of the capacitor C8, one end of the capacitor C9 and one end of the capacitor C10, one end of the resistor R8 and one end of the resistor R9 are connected with the cathode of a diode D5, the second output end of the cannon base J1, one end of the resistor R8 and the input end of a detection module are connected with the forward input end of a comparison module, the other end of the resistor R9 and the third output end of the cannon base J1 are connected with the reverse input end of the comparison module, the input end of the cannon base J1 is connected with a phantom analog microphone, and the first output end of the cannon base J1, the other end of the capacitor C8, the other end of the capacitor C9 and the other end of the capacitor C10 are all grounded.
4. The apparatus testing device of an external phantom-powered analog microphone according to claim 3, wherein: the detection module includes resistance R1, resistance R2 and resistance R3, the second output of cannon seat J1, resistance R8's one end and the forward input of comparison module all are connected with resistance R1's one end, resistance R1's the other end and resistance R3's one end all are connected with resistance R2's one end, resistance R2's the other end is connected with MCU's ADC sense terminal.
5. The apparatus testing device of an external phantom-powered analog microphone according to claim 4, wherein: the comparison module includes electric capacity C1, electric capacity C2, electric capacity C6, electric capacity C7, resistance R4, resistance R5, resistance R6, resistance R7 and comparator U10A, the other end of resistance R9 and the third output of the cannon seat J1 all are connected with electric capacity C2's one end, the second output of cannon seat J1, resistance R8's one end and resistance R1's one end all are connected with electric capacity C6's one end, electric capacity C6's the other end is connected with resistance R6's one end, electric capacity C2's the other end and resistance R5's one end are connected, resistance R6's the other end, electric capacity C7's one end and resistance R7's one end all are connected with comparator U10A's forward input end, resistance R5's the other end, resistance R4's one end and electric capacity C1's one end all are connected with comparator U10A's reverse input end, comparator U10A's the output, resistance R4's the other end and electric capacity C1's the other end all are connected with the module of decoding.
6. The apparatus test device of claim 5, wherein: the decoding module comprises an audio coding and decoding chip U1, and the output end of the comparator U10A, the other end of the resistor R4 and the other end of the capacitor C1 are connected with the audio input end of the conference host through the audio coding and decoding chip U1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210707794.XA CN114786112B (en) | 2022-06-22 | 2022-06-22 | Equipment detection device of external phantom power supply simulation microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210707794.XA CN114786112B (en) | 2022-06-22 | 2022-06-22 | Equipment detection device of external phantom power supply simulation microphone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114786112A CN114786112A (en) | 2022-07-22 |
| CN114786112B true CN114786112B (en) | 2022-10-11 |
Family
ID=82420950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210707794.XA Active CN114786112B (en) | 2022-06-22 | 2022-06-22 | Equipment detection device of external phantom power supply simulation microphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114786112B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2449404Y (en) * | 2000-06-22 | 2001-09-19 | 张树仁 | DC/ac plantom power source |
| EP1585359A1 (en) * | 2004-03-30 | 2005-10-12 | AKG Acoustics GmbH | Remote control of phantom power supplied microphones |
| CN101048015A (en) * | 2006-03-31 | 2007-10-03 | 欧力天工股份有限公司 | Condenser microphone circuit |
| CN201374808Y (en) * | 2008-12-26 | 2009-12-30 | 广州励丰声光科技有限公司 | Automatic phantom power supply selected microphone distributor |
| CN101771768A (en) * | 2010-01-03 | 2010-07-07 | 佛山市公信数字会议设备有限公司 | Digital conference system |
| CN202979264U (en) * | 2012-12-17 | 2013-06-05 | 宁波市鄞州奥创电子有限公司 | Capacitive handheld microphone for singing |
| CN104427449A (en) * | 2013-08-22 | 2015-03-18 | 朱一波 | Condenser microphone connecting line for providing phantom power via USB interface |
| CN107027004A (en) * | 2017-05-26 | 2017-08-08 | 上海启诺信息科技有限公司 | Phonotape and videotape linkage microphone host |
| CN207369299U (en) * | 2017-06-21 | 2018-05-15 | 惠州市德赛西威汽车电子股份有限公司 | A kind of Phantom Power circuit with diagnostic function |
| CN108521526A (en) * | 2018-05-31 | 2018-09-11 | 广东公信智能会议股份有限公司 | A kind of conference system |
| CN109119056A (en) * | 2018-08-14 | 2019-01-01 | 梁鹏胜 | Phantom power power supply capacitor formula voice and the pick-up integrated wireless transmission bullet of guitar multiple compatibility sing equipment |
| CN209002155U (en) * | 2018-09-29 | 2019-06-18 | 武汉瑞熠系统工程有限公司 | Digital conference management system |
| CN209233999U (en) * | 2018-12-13 | 2019-08-09 | 宁波爱音美电声科技有限公司 | A kind of phantom power for microphone power |
| CN110191305A (en) * | 2019-05-07 | 2019-08-30 | 广州市迪士普音响科技有限公司 | A kind of artificial intelligence digital conference system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8989360B2 (en) * | 2011-03-04 | 2015-03-24 | Mitel Networks Corporation | Host mode for an audio conference phone |
-
2022
- 2022-06-22 CN CN202210707794.XA patent/CN114786112B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2449404Y (en) * | 2000-06-22 | 2001-09-19 | 张树仁 | DC/ac plantom power source |
| EP1585359A1 (en) * | 2004-03-30 | 2005-10-12 | AKG Acoustics GmbH | Remote control of phantom power supplied microphones |
| CN101048015A (en) * | 2006-03-31 | 2007-10-03 | 欧力天工股份有限公司 | Condenser microphone circuit |
| CN201374808Y (en) * | 2008-12-26 | 2009-12-30 | 广州励丰声光科技有限公司 | Automatic phantom power supply selected microphone distributor |
| CN101771768A (en) * | 2010-01-03 | 2010-07-07 | 佛山市公信数字会议设备有限公司 | Digital conference system |
| CN202979264U (en) * | 2012-12-17 | 2013-06-05 | 宁波市鄞州奥创电子有限公司 | Capacitive handheld microphone for singing |
| CN104427449A (en) * | 2013-08-22 | 2015-03-18 | 朱一波 | Condenser microphone connecting line for providing phantom power via USB interface |
| CN107027004A (en) * | 2017-05-26 | 2017-08-08 | 上海启诺信息科技有限公司 | Phonotape and videotape linkage microphone host |
| CN207369299U (en) * | 2017-06-21 | 2018-05-15 | 惠州市德赛西威汽车电子股份有限公司 | A kind of Phantom Power circuit with diagnostic function |
| CN108521526A (en) * | 2018-05-31 | 2018-09-11 | 广东公信智能会议股份有限公司 | A kind of conference system |
| CN109119056A (en) * | 2018-08-14 | 2019-01-01 | 梁鹏胜 | Phantom power power supply capacitor formula voice and the pick-up integrated wireless transmission bullet of guitar multiple compatibility sing equipment |
| CN209002155U (en) * | 2018-09-29 | 2019-06-18 | 武汉瑞熠系统工程有限公司 | Digital conference management system |
| CN209233999U (en) * | 2018-12-13 | 2019-08-09 | 宁波爱音美电声科技有限公司 | A kind of phantom power for microphone power |
| CN110191305A (en) * | 2019-05-07 | 2019-08-30 | 广州市迪士普音响科技有限公司 | A kind of artificial intelligence digital conference system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114786112A (en) | 2022-07-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2874762Y (en) | DC output load fuse detector | |
| CN105510833A (en) | Storage battery health status detection method, device and system | |
| CN114786112B (en) | Equipment detection device of external phantom power supply simulation microphone | |
| CN110780187A (en) | Small-size DMM test board card and PCBA test system | |
| CN214070164U (en) | Loudspeaker open circuit detection circuit | |
| CN108572275A (en) | One kind is shoved detecting system and detection method | |
| CN211148835U (en) | Open short circuit reverse test circuit and image sensor chip test device | |
| CN2694288Y (en) | Switch cabinet leakage current checking and warning device | |
| CN209132398U (en) | Accumulator failure detection device | |
| CN112291697A (en) | Loudspeaker open circuit detection circuit | |
| CN208738876U (en) | A kind of charging unit | |
| CN207516486U (en) | A kind of device for reducing the secondary cable core verification time | |
| CN105842613A (en) | Bluetooth circuit testing jig | |
| CN206422823U (en) | Telephone system | |
| CN200989892Y (en) | Water quality detector | |
| CN219434953U (en) | Testing device for fast charging direct current load | |
| CN104935842A (en) | Standby circuit, control method and television system of standby circuit | |
| CN212367518U (en) | Non-inductive scheduling mixer capable of automatically detecting audio input | |
| CN209690415U (en) | A kind of intrinsic standoff ratio load detecting circuit and electronic cigarette | |
| CN220820144U (en) | Cable defect detection device for climbing frame machine | |
| CN211955656U (en) | Probe measuring device | |
| CN210835060U (en) | Multi-path power acquisition instrument | |
| CN220795398U (en) | In-place detection module | |
| CN216310637U (en) | Clamp for verifying performance of LDO (low dropout regulator) chip | |
| CN211236171U (en) | Power state detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 56 Nanli East Road, Shiqi Town, Panyu District, Guangzhou City, Guangdong Province, 510000 Patentee after: Guangdong Baolun Electronics Co.,Ltd. Address before: No.19 Chuangyuan Road, Zhongcun street, Panyu District, Guangzhou, Guangdong 510000 Patentee before: GUANGZHOU ITC ELECTRONIC TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address |