CN111356061A

CN111356061A - Sound box capable of performing voice recognition

Info

Publication number: CN111356061A
Application number: CN201811564252.1A
Authority: CN
Inventors: 曹德焕; 韩丹惠
Original assignee: Xian Zhisheng Ruixin Semiconductor Technology Co Ltd
Current assignee: Xian Zhisheng Ruixin Semiconductor Technology Co Ltd
Priority date: 2018-12-20
Filing date: 2018-12-20
Publication date: 2020-06-30

Abstract

The invention relates to a sound box capable of carrying out voice recognition, which comprises a voice recognition module, a voice recognition module and a voice recognition module, wherein the voice recognition module is used for recognizing received voice to obtain a voice signal; the signal conversion module is used for converting the voice signal into an electric signal; the central processing module is used for calling the audio file according to the electric signal; the audio amplification filtering module is used for amplifying and filtering the audio file; and the loudspeaker is used for playing the amplified and filtered audio file. The audio content required to be played by the sound box is amplified, so that a listener can hear the sound played by the loudspeaker, and meanwhile, the noise can be suppressed, so that the audio required to be played by the loudspeaker is reserved, and the listener can hear clear sound.

Description

Sound box capable of performing voice recognition

Technical Field

The invention relates to the technical field of sound equipment, in particular to a sound equipment capable of performing voice recognition.

Background

With the continuous development of human society and the continuous progress of science and technology, various intelligent electronic devices have emerged, which mainly focus on intelligent electronic communication devices, such as smart phones, smart tablet computers, and the like, and sound equipment has become an indispensable electronic appliance for electronic devices.

The sound equipment is a sound equipment for restoring real sound through an audio transducer, and generally comprises an audio signal input device (microphone), an audio signal processing device, an audio signal amplifying device and a sound restoring device (loudspeaker), wherein the microphone converts a sound wave signal of an original sound field into an electric signal, the electric signal is correspondingly processed by the audio signal processing device and the audio signal amplifying device, and finally the electric signal is restored into the sound wave signal through the loudspeaker and radiated to a space, so that the sound is restored and reproduced.

However, the conventional sound equipment cannot effectively eliminate the noise when playing the audio, so that people can be greatly interfered by the noise when hearing the sound played by the loudspeaker.

Disclosure of Invention

Therefore, in order to solve the technical defects and shortcomings of the prior art, the invention provides a sound box capable of performing voice recognition.

Specifically, an embodiment of the present invention provides a sound capable of performing speech recognition, including:

the voice recognition module is used for recognizing the received voice to obtain a voice signal;

the signal conversion module is used for converting the voice signal into an electric signal;

the central processing module is used for calling an audio file according to the electric signal;

the audio amplification filtering module is used for amplifying and filtering the audio file;

the loudspeaker is used for playing the amplified and filtered audio file;

the audio amplification filtering module comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a triode Q1, a triode Q2, a triode Q3, a triode Q4, a diode D1, a diode D2 and a chip U, wherein,

a first end of the resistor R1 is connected to the signal input terminal Vi, a second end of the resistor R1 is connected to the first end of the capacitor C1, a second end of the capacitor C1 is connected to the P-pole of the diode D1 and the first end of the resistor R2, an N-pole of the diode D1 is connected to a power supply terminal VCC, a second end of the resistor R2 is connected to the collector of the transistor Q1, a base of the transistor Q1 is connected to the signal input terminal Vi, an emitter of the transistor Q1 is connected to the first end of the capacitor C2, a second end of the capacitor C2 is connected to the base of the transistor Q2, a collector of the transistor Q2 is connected to the pin 2 of the chip U and the first end of the resistor R8, a second end of the resistor R3 is connected to the N-pole of the diode D1 and the pin 1 of the chip U, an emitter of the transistor Q2 is connected to the first end of the resistor R4, the second end of the resistor R4 is connected to the pin 3 of the chip U and the ground GND, the P-pole of the diode D2 is connected to the pin 6 of the chip U, the N-pole of the diode D2 is connected to the first end of the resistor R5, the second end of the resistor R5 is connected to the emitter of the transistor Q4, the base of the transistor Q4 is connected to the pin 5 of the chip U, the collector of the transistor Q4 is connected to the first end of the capacitor C3, the first end of the capacitor C4 and the signal output Vo, the second end of the capacitor C3 is connected to the collector of the transistor Q3, the base of the transistor Q3 is connected to the pin 4 of the chip U, the emitter of the transistor Q3 is connected to the first end of the resistor R6, and the second end of the resistor R6 is connected to the second end of the capacitor C4 and the ground GND.

The embodiment of the invention has the following advantages:

the audio content required to be played by the sound box is amplified, so that a listener can hear the sound played by the loudspeaker, and meanwhile, the noise can be suppressed, so that the audio required to be played by the loudspeaker is reserved, and the listener can hear clear sound.

Other aspects and features of the present invention will become apparent from the following detailed description, which proceeds with reference to the accompanying drawings. It is to be understood, however, that the drawings are designed solely for purposes of illustration and not as a definition of the limits of the invention, for which reference should be made to the appended claims. It should be further understood that the drawings are not necessarily drawn to scale and that, unless otherwise indicated, they are merely intended to conceptually illustrate the structures and procedures described herein.

Drawings

The following detailed description of embodiments of the invention will be made with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a sound capable of performing speech recognition according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an audio amplifying and filtering circuit according to an embodiment of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly connected" to another element, there are no intervening elements present.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a sound capable of performing speech recognition according to an embodiment of the present invention. This stereo set includes:

specifically, the speech recognition module can detect a user's speech command, such as the user speaking: the name of the next song or the song of a certain song and the name of a certain poem are detected by the voice recognition module, the voice command is recognized by the voice recognition module, and the recognized content is the voice signal which needs to be transmitted into the signal conversion module.

specifically, the signal conversion module is connected to the voice recognition module and is configured to receive a voice signal transmitted by the voice recognition module and convert the voice signal into an electrical signal, and the signal conversion module transmits the electrical signal to the central processing module.

specifically, the central processing module includes treater and the memory cell who links to each other with the treater, treater and memory cell connect gradually between signal conversion module and audio frequency processing module, this treater can be any one of ARM treater, the singlechip, DSP treater, the treater is handled the signal of telecommunication that receives, the relevant content is transferred from the memory cell to the treater according to the content of the signal of telecommunication that receives, and control memory cell transmits relevant content to audio frequency amplification filtering module, wherein, memory cell can store some audio files so that the stereo set broadcast, the audio file can be song, ancient poetry, the singing etc. the user can transmit these audio files to the memory cell through USB, bluetooth etc..

The audio amplification and filtering module is used for amplifying and filtering the audio signal;

specifically, referring to fig. 2, the audio amplification filter circuit includes: a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a transistor Q1, a transistor Q2, a transistor Q3, a transistor Q4, a diode D1, a diode D2 and a chip U, wherein,

Specifically, the audio amplification filter circuit comprises an audio amplification circuit and a suppression circuit, wherein the audio amplification circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a capacitor C1, a capacitor C2, a transistor Q1, a transistor Q2, and a diode D1, the transistor Q2 is a current limiting transistor for current limiting protection of a collector current of the transistor Q2, the capacitor C2 is a coupling capacitor for preventing interference between the transistor Q1 and the transistor Q2, so that the safety and reliability of the circuit are high, the diode D1 is a current limiting diode for current limiting protection of a branch between the resistor R2 and the resistor 3 for further enhancing the safety and reliability of the circuit, the resistor R2 is a current limiting resistor for current limiting protection of a collector of the transistor Q1, the resistor R3 is a current limiting resistor for current limiting protection of a collector of the transistor Q2, the resistor R4 is a current limiting resistor, the audio amplifying circuit is used for carrying out current-limiting protection on an emitting electrode of a transistor Q2, and power amplification of audio is achieved through a transistor Q1 and a transistor Q2. The suppression circuit comprises a resistor R5, a resistor R6, a capacitor C3, a capacitor C4, a triode Q3, a triode Q4, a diode D2 and a chip U, wherein, the triode Q3, the resistor R6 and the capacitor C4 can form a constant current source circuit, thereby providing a constant working current for the chip U, after the audio signal amplified by the audio amplifying circuit is transmitted to the chip U, the audio signal will contain the sound and noise for listener listening, and the frequencies of the sound and noise for listener listening are different, the chip U can reserve the sound for the listener to listen to in the audio signal and suppress the noise, the sound for the listener to listen to is output from the pin 5 of the chip U, the sound is filtered by a triode Q4, a diode D2 and a resistor R5, and the audio signal after amplification and noise suppression is output through a signal output end.

Preferably, transistor Q2 is model 13001, and transistor Q1 and transistor Q3 are model 9012.

Preferably, diode D1 and diode D2 are model numbers HER 208.

Preferably, the transistor Q1, the transistor Q2, and the transistor Q3 are NPN transistors.

Preferably, the model of the chip U is BNX028-01L, and the chip U is used for filtering noise and interference signals.

Preferably, the resistance of the resistor R1 is 10k Ω, the resistance of the resistor R2 is 20k Ω, the resistance of the resistor R3 is 60k Ω, the resistance of the resistor R4 is 40k Ω, the resistance of the resistor R5 is 60k Ω, the resistance of the resistor R6 is 40k Ω, the capacitance values of the capacitor C1, the capacitor C2, the capacitor C3 and the capacitor C4 are all 10 μ F, and the voltage provided by the dc power source terminal VCC is 8V.

And the loudspeaker is used for playing the amplified and filtered audio signal.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A sound system capable of speech recognition, comprising:

the loudspeaker is used for playing the amplified and filtered audio file;