CN211019150U - Microphone capable of adjusting tone - Google Patents

Abstract

The utility model provides a microphone of adjustable tone quality. The microphone includes a housing, a pick-up head connected to the housing, and a matching equalization circuit connected to the pick-up head. The microphone mainboard is arranged in the shell, and the matching equalization circuit comprises an audio amplifier, an adjusting circuit and an equalization circuit. The audio amplifier comprises a power supply end, a common grounding end, a positive phase input end, a reverse input end and an output end. The power supply end is connected with the microphone mainboard, the public grounding end is grounded, the positive phase input end and the negative phase input end are respectively connected with the sound pick-up head through the first capacitor and the second capacitor, the output end is connected with the input end of the equalizing circuit through the third capacitor, and the output end and the power end of the equalizing circuit are respectively connected with the microphone mainboard. The utility model provides a microphone realizes the adjustable tone quality sound pick-up head of compriseing hardware circuit and sound pick-up head, solves the problem of the adjustment of the slight tone quality of microphone, makes the tone quality adjustment more convenient, the product design and the popularization of being convenient for.

Description

Microphone capable of adjusting tone

[ technical field ] A method for producing a semiconductor device

The utility model relates to an external equipment technical field especially relates to a microphone of adjustable tone quality.

[ background of the invention ]

The microphone is also called as microphone, an electroacoustic equipment, belonging to microphone, which is a transducer for sound-electricity conversion, and applies sound wave to electroacoustic element to produce voltage, then converts it into electric energy. Microphones are used in various sound amplification devices, and in daily life, a microphone is usually used for collecting audio signals in outdoor large-scale activities such as nights, meetings, conferences and the like. At present, the requirements of users on tone quality and tone color are higher and higher for wireless handheld microphones used for entertainment and performance, and each consumer has own preference, so that it is difficult to satisfy all consumers with one tone color.

The pick-up head is a device used for collecting field sounds and transmitting the field sounds to back-end equipment. The traditional analog sound pickup head picks up sound through a microphone, and achieves effective noise reduction through a frequency selection network, an amplification noise reduction network with an NE5532 chip as a core device and an automatic feedback network, so that the functions of sound pickup, amplification and noise reduction are expanded.

At present, part of microphones have the function of adjusting tone colors in a software mode, namely, an equalizing circuit is added in a wireless microphone circuit system. The adjustment mode is not suitable for the self adjustment of consumers, generally, the adjustment mode is either several curves set by a factory and selected by the users or solidified in software, and the adjustment mode cannot be adjusted by the consumers, and the two modes are both deficient in convenience and freedom degree, and are intuitive in adjustment display and difficult to control by the users.

Therefore, we provide a microphone capable of solving the above problems.

[ Utility model ] content

The mode that the microphone adopted software among the prior art at present adjusts the tone quality, and unsuitable consumer oneself adjusts, all lacks to some extent in convenience and degree of freedom, and the adjustment shows directly perceived moreover, and the user is difficult to the accuse, consequently, the utility model provides a microphone of adjustable tone quality.

The utility model provides a microphone that can tone quality, including the casing and with the pick-up head that the casing is connected, the inside microphone mainboard that is provided with of casing, the microphone still include respectively with the pick-up head with the matching equalizer circuit that the microphone mainboard is connected, matching equalizer circuit includes audio amplifier, adjusting circuit and equalizer circuit, audio amplifier includes power supply end, public earthing terminal, normal phase input, reverse input and output, the power supply end with the microphone mainboard is connected, public earthing terminal ground connection, normal phase input and reverse phase input respectively through first electric capacity and second electric capacity with the pick-up head is connected, the output pass through the third electric capacity with equalizer circuit's input is connected, equalizer circuit's output and power end respectively with the microphone mainboard is connected.

Preferably, the equalization circuit comprises five sections of integrated equalization circuits, and the adjustable frequencies of the five sections of integrated equalization circuits are 200Hz, 500Hz, 1KHz, 4KHz and 10KHz respectively.

Preferably, the equalization circuit comprises five sections of integrated equalization circuits, each integrated equalization circuit comprises a common voltage amplifier and an analog inductor, and each analog inductor comprises an internal resistor, an external capacitor element and a transistor.

Preferably, the adjusting circuit comprises a 3-segment integrated equalizing circuit, a 7-segment integrated equalizing circuit or a 10-segment integrated equalizing circuit.

Preferably, the microphone mainboard comprises an audio amplification module connected with the equalization circuit, a control display module connected with the audio amplification module, a transmitting antenna connected with the transmitting module and a power module, wherein one end of each of the audio amplification module, the transmitting module and the power module is grounded.

Preferably, the microphone further includes a tone color adjustment knob provided corresponding to a frequency of the equalization circuit.

Preferably, the microphone further comprises a display screen and an operation button arranged on the housing.

Compared with the prior art, the microphone provided by the utility model realizes the tone-adjustable pickup head consisting of the hardware circuit and the pickup head by arranging the matching equalization circuit connected with the pickup head, solves the problem of fine tone adjustment of the microphone, facilitates the tone adjustment, and is convenient for product design and popularization; meanwhile, the user can adjust the tone by himself, different devices can be conveniently connected, the microphone is suitable for more use environments, and the user can better exert the tone.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

fig. 1 is a schematic structural diagram of a microphone according to the present invention;

fig. 2 is a schematic view of the construction of the pick-up head shown in fig. 1;

fig. 3 is a schematic view of a bottom surface structure of the pickup head shown in fig. 2;

fig. 4 is a schematic block diagram of the circuit board and the microphone main board shown in fig. 1.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Please refer to fig. 1-3 in combination, fig. 1 is a schematic structural diagram of a microphone shown in the present invention, fig. 2 is a schematic structural diagram of a pickup head shown in fig. 1, and fig. 3 is a schematic structural diagram of a bottom surface of the pickup head shown in fig. 2. the present invention provides a microphone 100, which includes a casing 10, a pickup head 30, a matching equalizing circuit 50 connected to the pickup head 30 and the casing 10, a display screen 70 and an operation button 90 disposed on the casing 10. the casing 10 includes a microphone main board 11 disposed inside the casing 10, a tone adjusting button 13 connected to the pickup head 30, a display screen 70 and an operation button 90 disposed on a surface of the casing 10. the display screen 70 can display a volume and a tone pitch of the microphone 100. the display screen 70 is a 0L display screen or a true color TFT display screen.

Referring to fig. 4, fig. 4 is a schematic block diagram of the matching equalizer circuit and the microphone main board shown in fig. 1. The matching equalization circuit 50 includes an audio amplifier 51 and an equalization circuit 53. The audio amplifier 51 includes a power supply terminal, a common ground terminal, a non-inverting input terminal, an inverting input terminal, and an output terminal. The power supply end (VCC +) with the microphone mainboard 11 is connected, public earthing terminal ground, normal phase input end and inverting input end respectively through first electric capacity 55 and second electric capacity 57 with the pickup head 30 is connected, the output pass through third electric capacity 59 with equalizer circuit 53's input is connected, equalizer circuit 53's output and power end respectively with the microphone mainboard 11 is connected. The microphone main board 11 supplies power to the matching and equalizing circuit 50, and the matching and equalizing circuit 50 transmits signals to the microphone main board 11.

After the audio signal is collected by the pickup head 30, the audio signal enters the audio amplifier 51, and enters the equalizing circuit 53 after being processed by the audio amplifier 51. The equalizer circuit 53 includes a multi-stage integrated equalizer circuit, and the configuration thereof can be determined according to the convenience of the user, operability, and the need for tone adjustment. In the present embodiment, the equalization circuit 53 includes five segments of integrated equalization circuits, which can adjust frequencies to 200Hz, 500Hz, 1KHz, 4KHz and 10KHz, respectively. Further, the equalizing circuit 53 includes a five-segment integrated equalizing circuit TA7796, and the integrated equalizing circuit TA7796 includes a common voltage amplifier and an analog inductor. The analog inductor comprises an internal resistor, an external capacitor element and a transistor. For convenience of illustration, fig. 4 marks the internal resistance of the integrated equalization circuit, respectively the adjustable frequency of the integrated equalization circuit. Suitably, the tone color adjustment button 13 includes five tone color adjustment buttons 13 with mark adjustment frequencies of 200Hz, 500Hz, 1KHz, 4KHz and 10KHz, respectively. In addition, the equalization circuit 53 may be a 3-segment integrated equalization circuit, a 7-segment integrated equalization circuit, or a 10-segment integrated equalization circuit.

The microphone main board 11 includes a power module 111, an audio amplification module 113, a transmission module 115, a transmission antenna, and a display module 117. In this embodiment, the power module 111 is a DC-DC converter. The power module 111 is connected to the audio amplifier 51 and other modules of the microphone main board 11, and is configured to control the power-on and power-off states of the microphone 100 and the tone adjustment of the microphone 100. The audio amplifying module 113 is connected to an output end of the equalizing circuit 53, and is configured to amplify the audio signal collected and processed by the pickup head 30. The transmitting module 115 is connected to the audio amplifying module 113, and is configured to transmit the amplified audio signal to other terminals through the transmitting antenna. The terminal comprises any one of a smart phone, an audio processing terminal and a sound box. The display module 117 is connected to the transmitting module 115, and is configured to display the tone adjustment condition of the equalizing circuit 57. One end of the audio amplification module 113, one end of the transmission module 115 and one end of the power supply module 111 are all grounded.

The working principle of the microphone is as follows: the microphone 100 has a pickup head 30, picks up external sound through the pickup head 30, and converts the sound into an audio signal, the audio signal enters the microphone main board 11 after being processed by the audio amplifier 51 and the equalizing circuit 53, the microphone main board 11 amplifies the audio signal through the audio amplifying module 113, and transmits the amplified audio signal to other terminals through the transmitting module 115, and the terminals include smart phones, audio processing terminals or sound equipment, so that the terminals can process or utilize the audio signal.

Compared with the prior art, the microphone 100 provided by the utility model realizes the microphone 100 consisting of the matching equalization circuit 50 and the pickup head 30 by arranging the matching equalization circuit 50 connected with the pickup head 30, solves the problem of fine tone adjustment of the microphone 100, and facilitates the tone adjustment and the product design and popularization; meanwhile, the user can adjust the tone by himself, different devices can be conveniently connected, the microphone is suitable for more use environments, and the user can better exert the tone.

The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims (7)

1. A microphone with adjustable tone comprises a shell and a pick-up head connected with the shell, wherein a microphone main board is arranged in the shell, characterized in that the microphone also comprises a matching equalization circuit respectively connected with the pickup head and the microphone main board, the matching equalization circuit comprises an audio amplifier, an adjusting circuit and an equalization circuit, wherein the audio amplifier comprises a power supply end, a common grounding end, a positive phase input end, a reverse input end and an output end, the power supply end of the power supply is connected with the microphone mainboard, the common grounding end is grounded, the positive phase input end and the negative phase input end are respectively connected with the pickup head through a first capacitor and a second capacitor, the output end of the equalizing circuit is connected with the input end of the equalizing circuit through a third capacitor, and the output end and the power end of the equalizing circuit are respectively connected with the microphone mainboard.

2. The tone-tunable microphone of claim 1, wherein the equalization circuit comprises five segments of integrated equalization circuits with tunable frequencies of 200Hz, 500Hz, 1KHz, 4KHz, and 10KHz, respectively.

3. The toneable microphone according to claim 2, wherein the integrated equalization circuit comprises a common voltage amplifier and an analog inductor, wherein the analog inductor comprises an internal resistor, an external capacitor element, and a transistor.

4. The toneable microphone according to claim 1, wherein the adjusting circuit comprises a 3-segment integrated equalizing circuit, a 7-segment integrated equalizing circuit, or a 10-segment integrated equalizing circuit.

5. The microphone with adjustable tone color according to claim 1, wherein the microphone main board comprises an audio amplification module connected to the equalization circuit, a control display module connected to the audio amplification module, a transmission antenna connected to the transmission module, and a power module, and one end of the audio amplification module, one end of the transmission module, and one end of the power module are all grounded.

6. The tone adjustable microphone of claim 1, further comprising a tone adjustment knob provided corresponding to a frequency of the equalization circuit.

7. The toneable microphone according to claim 1, further comprising a display screen and an operating button disposed on the housing.

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