CN214336333U - Recording pen and recording system - Google Patents

Abstract

The application provides a recording pen and a recording system. The recording pen comprises a microphone, a coding and decoding circuit, a digital processing circuit and a Bluetooth communication module. The microphone is used for collecting sound signals and converting the sound signals into audio frequency analog signals. The coding and decoding circuit is electrically connected with the microphone and used for receiving the audio analog signal and converting the audio analog signal into an audio digital signal. The digital processing circuit is electrically connected with the coding and decoding circuit and used for receiving the audio digital signals and carrying out voice enhancement processing on the audio digital signals to obtain processed signals, wherein the signal-to-noise ratio of the processed signals after the voice enhancement processing is larger than that of the audio digital signals. The Bluetooth communication module is electrically connected with the digital processing circuit and used for outputting the processing signal to the electronic equipment. The recording pen of this application has longer time of endurance.

Description

Recording pen and recording system

Technical Field

The application relates to the technical field of electronics, especially, relate to a recording pen and recording system.

Background

People always have large and small meetings, interviews, course training and the like in real life, and in the past, meetings, interview results, training contents and the like are recorded by the people or professional personnel. However, with the continuous development of science and technology and the emergence of recording technology, recording pens are brought forward. The recording pen can be used to record meeting summaries, interview results, training content, and the like.

However, the recording pen in the related art consumes much power, and for a long-time conference, interview, training, or the like, there may be a situation where the battery of the recording pen that can record only a part of the content is dead. Therefore, the recording pen in the related art has large power consumption, which results in poor cruising ability.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem that the endurance time of a recording pen is not good in the related art, the embodiment of the application provides the recording pen with high endurance capacity and a recording system.

In a first aspect, the present application provides a recording pen, comprising:

the microphone is used for collecting sound signals and converting the sound signals into audio frequency analog signals;

the coding and decoding circuit is electrically connected with the microphone and is used for receiving the audio analog signal and converting the audio analog signal into an audio digital signal;

the digital processing circuit is electrically connected with the coding and decoding circuit and is used for receiving the audio digital signal and carrying out voice enhancement processing on the audio digital signal to obtain a processed signal, wherein the signal-to-noise ratio of the processed signal after the voice enhancement processing is greater than that of the audio digital signal; and

and the Bluetooth communication module is electrically connected with the digital processing circuit and is used for outputting the processing signal to the electronic equipment.

Wherein, the recording pen still includes:

the microprocessor is electrically connected with the Bluetooth communication module and the digital processing circuit and is used for receiving the processing signal output by the digital processing circuit and outputting the processing signal to the electronic equipment through the Bluetooth communication module.

The microprocessor is further used for encoding the processing signal to obtain an encoded processing signal, and the microprocessor is used for outputting the encoded processing signal to the electronic device through the Bluetooth communication module, wherein the data volume of the encoded processing signal is smaller than that of the uncoded processing signal.

Wherein, the recording pen still includes:

and the memory is electrically connected with the microprocessor, and the microprocessor receives the processing signal output by the digital processing circuit and stores the processing signal in the memory.

Wherein, the recording pen still includes:

and the interface is electrically connected with the microprocessor, and the microprocessor is also used for outputting the processing signal through the interface.

The voice recording pen comprises at least two microphones, the at least two microphones are arranged at intervals and are respectively located at two ends of the voice recording pen, the digital processing circuit is used for positioning a noise source according to sound signals collected by the at least two microphones and eliminating noise of the noise source when voice enhancement processing is carried out on the audio digital signals.

Wherein the at least two microphones are fully directional microphones.

In a second aspect, the present application further provides a sound recording system, where the sound recording system includes an electronic device and the recording pen described in any one of the above, and the electronic device includes:

and the communication receiving module is in communication connection with the Bluetooth communication module in the recording pen so as to receive the processing signal output by the Bluetooth communication module.

Wherein the electronic device further comprises:

the decoding module is electrically connected with the communication receiving module and is used for receiving the processing signal output by the communication receiving module and decoding the processing signal to obtain a decoding signal;

and the noise reduction module is electrically connected with the decoding module and is used for receiving the decoding signal and carrying out noise reduction processing on the decoding signal.

Wherein the electronic device further comprises:

and the network port is electrically connected with the noise reduction module and is used for uploading the decoded signal subjected to noise reduction processing by the noise reduction module to a cloud end.

Wherein the electronic device further comprises:

and the storage module is electrically connected with the noise reduction module and is used for storing the decoded signal subjected to noise reduction processing by the noise reduction module.

The recording pen provided by the embodiment of the application can transmit the sound signal in the occasion needing recording to the electronic equipment by configuring the electric connection relationship among the microphone, the coding and decoding circuit, the digital processing circuit and the Bluetooth communication module, so that the electronic equipment can perform operations such as storage, transcription and translation according to the received processing signal. In this embodiment, since the bluetooth communication module is used, the power consumption of the bluetooth communication module is low, so that the recording pen has a long endurance time under the condition that the capacity of the battery is constant. In summary, the recording pen provided by the embodiment of the application can achieve the technical effect of long endurance time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a recording pen according to an embodiment of the present application.

Fig. 2 is a circuit block diagram of the recording pen provided in fig. 1.

Fig. 3 is a circuit block diagram of a recording pen according to another embodiment of the present application.

Fig. 4 is a schematic structural diagram of a recording pen according to another embodiment of the present application.

Fig. 5 is a circuit block diagram of the recording pen provided in fig. 4.

Fig. 6 is a circuit block diagram of a recording pen according to still another embodiment of the present application.

Fig. 7 is a schematic structural diagram of a sound recording system according to an embodiment of the present application.

Fig. 8 is a circuit block diagram of the electronic device shown in fig. 7.

Fig. 9 is a circuit block diagram of an electronic device according to another embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present disclosure.

Reference herein to "an embodiment" or "an implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment or implementation can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

It should be noted that the terms "first" and "second" appearing in the present application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 and fig. 2 together, fig. 1 is a schematic structural diagram of a recording pen according to an embodiment of the present application; fig. 2 is a circuit block diagram of the recording pen provided in fig. 1. The recording pen is suitable for occasions needing recording, such as conferences, interviews, course training and the like. The recording pen 10 includes a microphone 110, a codec circuit 120, a digital processing circuit 130 and a bluetooth communication module 140. The microphone 110 is used for collecting a sound signal and converting the sound signal into an audio analog signal. The codec circuit 120 is electrically connected to the microphone 110, and is configured to receive the audio analog signal and convert the audio analog signal into an audio digital signal. The digital processing circuit 130 is electrically connected to the codec circuit 120, and is configured to receive the audio digital signal, and perform speech enhancement processing on the audio digital signal to obtain a processed signal, where a signal-to-noise ratio of the processed signal after the speech enhancement processing is greater than a signal-to-noise ratio of the audio digital signal. The bluetooth communication module 140 is electrically connected to the digital processing circuit 130, and is configured to output the processing signal to the electronic device 50.

The electronic device 50 (see fig. 7 and 8) may be, but is not limited to, a mobile phone, a computer, etc. The microphone 110 is called a microphone or microphone (microphone) by its microphone name. The microphone 110 is an energy conversion device that converts a sound signal into an electric signal. The microphone 110 is classified into a moving coil type, a capacitor type, an electret, and a recently emerging silicon micro-microphone. In this embodiment, the microphone 110 collects a sound signal and converts the sound signal into an audio analog signal.

The CODEC circuit 120 may be a circuit integrated on a chip, which may be a Coder-decoder (CODEC); the codec circuit 120 may also be a separate circuit module, such as a circuit module with analog-to-digital conversion function, or may also be a device with analog-to-digital conversion function. In colloquial, the codec circuit 120 converts an analog sound signal into a digital signal, which is also called an encoding process; alternatively, the digital signal is converted to an analog signal, which is also referred to as a decoding process. In this embodiment, the encoding function of the codec circuit 120 is used, that is, converting an audio analog signal into an audio digital signal.

The Digital Processing circuit 130(Digital Signal Processing, DSP) performs a voice enhancement process on the audio Digital Signal to obtain a processed Signal. The signal-to-noise ratio of the processed signal after the speech enhancement processing is greater than the signal-to-noise ratio of the audio digital signal, in other words, the audio digital signal is processed by the digital processing circuit 130, so that the signal-to-noise ratio is improved. By SIGNAL-to-NOISE RATIO (SNR or S/N), we mean the RATIO of SIGNAL to NOISE in a SIGNAL. The larger the signal-to-noise ratio of a signal is, the smaller the noise occupation ratio in the signal is represented, and the higher the quality of the signal is; conversely, the smaller the signal-to-noise ratio of a signal, the greater the noise occupancy characterizing the signal, and the poorer the quality of the signal. The digital processing circuit 130 may be a separate circuit module or a circuit integrated on a chip or a device having a speech enhancement processing function.

In one embodiment, the digital processing circuit 130 runs a signal processing algorithm, and the signal processing algorithm implements suppression of stationary noise, suppression of environmental noise, enhancement of human voice signal, and the like. The algorithm run in the DSP mainly comprises: voice preprocessing (anti-aliasing, clipping preprocessing, hanning window adding and the like), narrow-band beam processing and reverberation removing, and voice enhancement is performed again after the reverberation is removed, so that the signal-to-noise ratio is improved. The digital processing circuit 130 in the recording pen 10 in this embodiment performs a voice enhancement process on the audio digital signal to obtain a processed signal, which can improve the accuracy of the transcription of the processed signal, referred to as text information.

It should be understood that the signal processing algorithm executed in the digital processing circuit 130 is related to the prior art, and the signal processing algorithm is not improved in the present application, and the present application focuses on configuring the connection relationship between the digital processing circuit 130 and the microphone 110, the codec circuit 120, and the bluetooth communication module 140 and related hardware modules to achieve the purpose of the present application, and it should not be considered that the present application does not conform to the provisions of the patent laws for the claimed objects of the present invention. The bluetooth communication module 140 is a module that performs communication using bluetooth technology. The Bluetooth communication module 140 has Low power consumption, and is also called a Bluetooth Low Energy (BLE) communication module. The bluetooth communication module 140 requires less power than Wireless Fidelity (Wi-Fi) communication.

The recording pen 10 provided in this embodiment can transmit the sound signal in the occasion of recording to the electronic device 50 by configuring the electrical connection relationship among the microphone 110, the codec circuit 120, the digital processing circuit 130 and the bluetooth communication module 140, so that the electronic device 50 can perform operations such as saving, transferring, and translating according to the received processing signal. In the present embodiment, since the bluetooth communication module 140 with low power consumption is used, the recording pen 10 has a long endurance time under a constant battery capacity.

In addition, the bluetooth communication module 140 consumes less power, so that the required battery capacity is smaller, thereby making the cost of the recording pen 10 lower. In addition, the required capacity of the battery is small, which results in a small volume of the recording pen 10 and a good portability of the recording pen 10. In addition, since the digital processing circuit 130 performs voice enhancement on the audio signal, the signal-to-noise ratio of the processed signal is higher, which is beneficial to improving the quality of the processed signal output to the electronic device 50, and is beneficial to improving the transcription or translation into power when the electronic device 50 transcribes or translates the processed signal.

Referring to fig. 3, fig. 3 is a circuit block diagram of a recording pen according to another embodiment of the present application. In this embodiment, the recording pen 10 further includes a microprocessor 150. The microprocessor 150 is electrically connected to the bluetooth communication module 140 and the digital processing circuit 130, and the microprocessor 150 is configured to receive the processing signal output by the digital processing circuit 130 and output the processing signal to the electronic device 50 through the bluetooth communication module 140.

So-called microprocessor 150 (MCU), also called micro control Unit. In this embodiment, the manner in which the digital processing circuit 130 outputs the processing signal to the bluetooth communication module 140 is operated by the microprocessor 150.

Further, the microprocessor 150 is further configured to encode the processing signal to obtain an encoded processing signal. The microprocessor 150 is configured to output the encoded processed signal to the electronic device 50 through the bluetooth communication module 140, wherein the data size of the encoded processed signal is smaller than the data size of the uncoded processed signal.

In this embodiment, the microprocessor 150 encodes the processing signal to reduce the amount of data. Therefore, the data amount of the encoded processed signal is smaller than that of the unencoded processed signal, thereby enabling the bluetooth communication module 140 to quickly transmit the encoded processed signal to the electronic device 50.

Further, referring to fig. 3, the recording pen 10 further includes a memory 160. The memory 160 is electrically connected to the microprocessor 150, and the microprocessor 150 receives the processing signal output by the digital processing circuit 130 and stores the processing signal in the memory 160.

The memory 160 may be, but is not limited to, a Pseudo Static Random Access Memory (PSRAM) 160. The microprocessor 150 stores the processed signal output by the digital processing circuit 130, which can be provided to a user for listening or for transcription as text information. Because the processing signal is obtained by performing voice enhancement processing on the digital processing signal, the accuracy is higher when transcription is performed according to the processing signal.

The memory 160 is electrically connected to the microprocessor 150, and the memory 160 is electrically connected to the digital processing circuit 130. In other words, the microprocessor 150 and the digital processing circuit 130 share the storage space of the memory 160. The microprocessor 150 sends the audio digital signal outputted from the codec circuit 120 to the digital processing circuit 130 through the memory 160 for processing. A part of the processed signal obtained after the processing by the digital processing circuit 130 is stored in the memory 160 by the microprocessor 150; the other part is output to the electronic device 50 through the bluetooth communication module 140 by the microprocessor 150, or the other part is output to the electronic device 50 through the bluetooth communication module 140 after being encoded.

Referring to fig. 4 and 5, fig. 4 is a schematic structural diagram of a recording pen according to another embodiment of the present application; fig. 5 is a circuit block diagram of the recording pen provided in fig. 4. The recording pen 10 provided in this embodiment is substantially the same as the recording pen 10 provided in fig. 3 and the related embodiments, except that in this embodiment, the recording pen 10 further includes an interface 170. The interface 170 is electrically connected to the microprocessor 150, and the microprocessor 150 is further configured to output the processing signal through the interface 170.

In this embodiment, the interface 170 is a Universal Serial Bus (USB) interface. When the processing signal is output through the interface 170, the recording pen 10 can be plugged into an electronic device 50 having a corresponding interface 170, such as a computer, through the interface 170 to output the processing signal.

Referring to fig. 6, fig. 6 is a circuit block diagram of a recording pen according to still another embodiment of the present application. In this embodiment, the recording pen 10 includes at least two microphones 110. In the schematic diagram of the present embodiment, the recording pen 10 is illustrated as including two microphones 110. The at least two microphones 110 are disposed at intervals and located at two ends of the recording pen 10, respectively, and the digital processing circuit 130 is configured to locate a noise source according to the sound signals collected by the at least two microphones 110 and eliminate noise of the noise source when performing voice enhancement processing on the audio digital signals.

In this embodiment, the microphone 110 may further include a plurality of sub-microphones 110 to form a microphone 110 array, so as to enhance the effect when collecting the sound signal. In the present embodiment, the at least two microphones 110 are all directional microphones 110, so as to record the sound existing in each direction in the recording occasion, thereby enhancing the recording effect. In this embodiment, the at least two microphones 110 are disposed at intervals and located at two ends of the recording pen 10, respectively, so as to further enhance the recording effect. In this embodiment, two microphones 110 are used, and the distance between the two microphones 110 is 35 mm. The microphone 110 may be powered by a battery such as a lithium battery, so that the microphone 110 is portable and convenient to carry. It is understood that the battery in the recorder pen 10 is a rechargeable battery or a disposable battery.

Referring to fig. 7 and 8 together, fig. 7 is a schematic structural diagram of a recording system according to an embodiment of the present application; fig. 8 is a circuit block diagram of the electronic device shown in fig. 7. The recording system 1 comprises an electronic device 50 and a recording pen 10 according to any of the previous embodiments. The electronic device 50 may be, but is not limited to, a mobile phone, a computer, etc. In the schematic diagram of the present embodiment, the electronic device 50 is taken as a mobile phone as an example for illustration. Due to the universal applicability of the mobile phone, the recording pen 10 is convenient to use in combination with the mobile phone. The electronic device 50 includes a communication receiving module 510. The communication receiving module 510 is in communication connection with the bluetooth communication module 140 in the recording pen 10 to receive the processing signal output by the bluetooth communication module 140.

In this embodiment, the communication receiving module 510 in the electronic device 50 is in communication connection with the bluetooth communication module 140 in the recording pen 10, and therefore, the communication receiving module 510 is also a communication module supporting bluetooth communication, such as the bluetooth low energy communication module 140.

Further, in this embodiment, the electronic device 50 further includes a decoding module 520 and a noise reduction module 530. The decoding module 520 is electrically connected to the communication receiving module 510, and is configured to receive the processing signal output by the communication receiving module 510, and decode the processing signal to obtain a decoded signal. A noise reduction module 530, wherein the noise reduction module 530 is electrically connected to the decoding module 520, and is configured to receive the decoded signal and perform noise reduction processing on the decoded signal.

The decoding module 520 may be, but is not limited to, a Sub Band Code (SBC) module. The noise reduction module 530 may be, but is not limited to, a neural network based noise reduction module. In this embodiment, the noise reduction module 530 is a neural network based noise reduction module. In the present embodiment, the neural network employs three layers of fully connected deep neural networks, the first layer of deep neural network includes 256 neurons, the second layer of neural network includes 512 neurons, and the third layer of neural network includes 256 neurons. The features of the continuous preset frame number are used as the input of a first layer of neural network and are used for extracting high-dimensional features; the output of the first layer of neural network is used as the input of the second layer of neural network, and the output of the second layer of neural network is used as the input of the third layer of neural network. And then, performing parameter optimization and convergence by adopting a back propagation algorithm to obtain a final network model.

The signal-to-noise ratio of the decoded signal processed by the noise reduction module 530 is greater than the signal-to-noise ratio of the decoded signal 520 that is not processed by the noise reduction module 530. The signal-to-noise ratio of the decoded signal processed by the noise reduction module 530 is higher, and when the decoded signal output by the noise reduction module 530 and subjected to noise reduction processing is transcribed into a word, the accuracy of the transcribed word is higher.

In addition, the electronic device 50 further includes a sound source estimation module 540, where the sound source estimation module 540 is configured to distinguish the speaking directions of different people in the decoded signal, so that role separation can be performed during transcription, and corresponding characters are arranged according to different roles.

Referring to fig. 9, fig. 9 is a circuit block diagram of an electronic device according to another embodiment of the present disclosure. The electronic device 50 also includes a network port 560. The network port 560 is electrically connected to the noise reduction module 530, and is configured to upload the decoded signal subjected to noise reduction processing by the noise reduction module 530 to a cloud. The decoded signal processed by the noise reduction module 530 is uploaded to the cloud for transcription.

In this embodiment, the electronic device 50 further includes a storage module 550. The storage module 550 is electrically connected to the noise reduction module 530, and is configured to store the decoded signal subjected to noise reduction processing by the noise reduction module 530. When the user needs to listen, the user can listen directly, or when the user needs to transcribe, the user can send the transcribed data to the cloud or a webpage or a transcription device for transcription. The storage module 550 may be, but not limited to, a random access memory, a dynamic random access memory, a static random access memory, and the like, and is not limited in this embodiment.

It should be noted that, the present application aims to provide a novel recording pen 10 and a recording system 1, and the purpose of the present application is achieved by setting the connection relationship among the components (e.g., the microphone 110, the codec circuit 120, the digital processing circuit 130, the bluetooth communication module 140, the microprocessor 150, the memory 160, the interface 170, etc.) in the recording pen 10 and the devices, and the connection relationship among the components (e.g., the communication receiving module 510, the decoding module 520, the noise reduction module 530, the network port 560, the storage module 550, the sound source estimation module 540, etc.) in the electronic device 50 and the devices. The signals processed by each component are only functions which can be realized by itself, and algorithm or software level improvement is not carried out on each device, so that the application is not considered to be in conformity with the object of patent law on protection of the utility model.

The foregoing is an implementation of the embodiments of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the embodiments of the present application, and these modifications and decorations are also regarded as the protection scope of the present application.

Claims (11)

1. A recording pen, comprising:

the microphone is used for collecting sound signals and converting the sound signals into audio frequency analog signals;

the coding and decoding circuit is electrically connected with the microphone and is used for receiving the audio analog signal and converting the audio analog signal into an audio digital signal;

the digital processing circuit is electrically connected with the coding and decoding circuit and is used for receiving the audio digital signal and carrying out voice enhancement processing on the audio digital signal to obtain a processed signal, wherein the signal-to-noise ratio of the processed signal after the voice enhancement processing is greater than that of the audio digital signal; and

and the Bluetooth communication module is electrically connected with the digital processing circuit and is used for outputting the processing signal to the electronic equipment.

2. The recording pen of claim 1, further comprising:

the microprocessor is electrically connected with the Bluetooth communication module and the digital processing circuit and is used for receiving the processing signal output by the digital processing circuit and outputting the processing signal to the electronic equipment through the Bluetooth communication module.

3. The sound recording pen of claim 2, wherein the microprocessor is further configured to encode the processed signal to obtain an encoded processed signal, and the microprocessor is configured to output the encoded processed signal to the electronic device through the bluetooth communication module, wherein the data amount of the encoded processed signal is smaller than the data amount of the non-encoded processed signal.

4. The recording pen of claim 2, further comprising:

and the memory is electrically connected with the microprocessor, and the microprocessor receives the processing signal output by the digital processing circuit and stores the processing signal in the memory.

5. The recording pen of claim 4, further comprising:

and the interface is electrically connected with the microprocessor, and the microprocessor is also used for outputting the processing signal through the interface.

6. The recording pen as claimed in claim 1, wherein the recording pen includes at least two microphones, the at least two microphones are spaced apart and located at two ends of the recording pen, respectively, and the digital processing circuit is configured to locate a noise source according to the sound signals collected by the at least two microphones and eliminate noise of the noise source when performing the voice enhancement processing on the audio digital signal.

7. The stylus of claim 6, wherein the at least two microphones are fully directional microphones.

8. A sound recording system comprising an electronic device and a recording pen according to any one of claims 1 to 7, the electronic device comprising:

and the communication receiving module is in communication connection with the Bluetooth communication module in the recording pen so as to receive the processing signal output by the Bluetooth communication module.

9. The sound recording system of claim 8, wherein the electronic device further comprises:

the decoding module is electrically connected with the communication receiving module and is used for receiving the processing signal output by the communication receiving module and decoding the processing signal to obtain a decoding signal;

and the noise reduction module is electrically connected with the decoding module and is used for receiving the decoding signal and carrying out noise reduction processing on the decoding signal.

10. The sound recording system of claim 9, wherein the electronic device further comprises:

and the network port is electrically connected with the noise reduction module and is used for uploading the decoded signal subjected to noise reduction processing by the noise reduction module to a cloud end.

11. The sound recording system of claim 10, wherein the electronic device further comprises:

and the storage module is electrically connected with the noise reduction module and is used for storing the decoded signal subjected to noise reduction processing by the noise reduction module.

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