RU83671U1 - SIGNAL PROCESSING AND PLAYBACK SYSTEM AND SOUND SIGNALS AND VIDEO SIGNALS PROCESSING DEVICE - Google Patents

Abstract

1. A system for processing and reproducing signals with analogue input and output of audio signals, comprising a monitor and a computer, characterized in that it further comprises a device for processing audio signals and video signals connected to a computer via a USB connector, made with analogue input and output of audio signals and including a processor , a memory unit connected to the processor, analog-to-digital and digital-to-analog converters connected to the processor and connected respectively to the analog input and output sound O signals. ! 2. The system according to claim 1, characterized in that the device for processing audio signals and video signals further includes a controller that transfers data between the device for processing audio signals and video signals and a computer via a USB connector. ! 3. The system according to claim 1, characterized in that it further comprises a microphone and / or headphones connected respectively to the analog input and output of the audio signals of the device for processing audio signals and video signals. ! 4. A device for processing audio signals and video signals made with analog input and output of audio signals and including a processor, characterized in that it is configured to connect to a computer via a USB connector and further includes analog-to-digital and digital-to-analog converters connected to the processor and connected respectively to the analog input and output of audio signals. ! 5. The device according to claim 4, characterized in that it further includes a controller for transmitting data between the processor and the computer via the USB connector. ! 6. The device

Description

Technical field

The utility model relates to automated learning tools and can be used to create integrated group and / or individual training systems.

State of the art

The prior art system for processing and reproducing signals with analogue input and output of audio signals, containing a monitor and a computer, and used for student learning (application US No. US 2004/0215445, published October 28, 2004). The disadvantage of this system is that it is a specialized computer and expects to use classrooms equipped with these computers for training, which increases the cost of training, makes the learning process inflexible and reduces its effectiveness.

Also known is a device for processing audio signals and video signals, made with analog input and output of audio signals and including a processor (US application No. US 2004/0215445, published October 28, 2004). The disadvantage of this device is that it is a specialized computer and expects to use classrooms equipped with these computers for training, which increases the cost of training, makes the learning process inflexible and reduces its effectiveness.

Utility Model Disclosure

The claimed utility models are intended for use in the educational process when studying a number of branches of physics, in particular, the principles of constructing telephone and telegraph communication devices, using modem communication, processing audio signals, encoding digital information.

The technical result, to which the claimed utility models are directed, is a specialized small-sized device for processing audio and video signals, compatible with a personal computer, which is equipped with almost all educational institutions. This allows you to quickly and economically turn any audience into a class for the study of physics, computer science and technology.

The signal processing and playback system allows you to study the conversion of signals, including sounds at the input of the system, using their temporal and spectral representation on the monitor screen and the sound of the converted signals.

The indicated technical results are ensured by the fact that the system for processing and reproducing signals with analogue input and output of audio signals, comprising a monitor and a computer, is additionally equipped with a device for processing audio and video signals connected to a computer via a USB connector, made with analogue input and output of audio signals and including processor, a memory unit connected to the processor, analog-to-digital and digital-to-analog converters connected to the processor and connected, respectively continuously to analog input and output audio signals.

In this case, the device for processing audio signals and video signals may further include a controller transmitting

data between the audio and video signal processing device and the computer via the USB connector.

The system may further comprise a microphone and / or headphones connected, respectively, to the analog input and output of the audio signals of the device for processing audio signals and video signals.

These technical results are ensured by the fact that the device for processing audio signals and video signals with analogue input and output of audio signals and including a processor is configured to connect to a computer via a USB connector and additionally includes analog-to-digital and digital-to-analog converters connected to the processor and connected , respectively, to the analog input and output of audio signals.

The device may further include a controller for transmitting data between the processor and the external computer via the USB connector.

The device may further include a microphone connected to the analog input of audio signals.

The device may further include a non-volatile rewritable memory unit connected to the processor. The non-volatile rewritable memory unit can be connected to the controller for data transfer between the processor and an external computer via the USB connector.

Brief Description of the Drawings

Figure 1 shows a block diagram of a system for processing and reproducing signals.

Figure 2 shows a block diagram of a device for processing audio signals and video signals.

Utility Model Implementation

Figure 1 presents a block diagram of a system for processing and reproducing signals, including a personal computer 1, a monitor 2, and a device for processing audio signals and video signals 3, to which a microphone and headphones are connected. For teaching students such systems can be equipped with any audience. Moreover, it is significant that the device for processing audio and video signals 3 has small dimensions (in accordance with the development - 90 × 127 × 19 mm) and a mass of about 200 g and can easily be used to equip the audience with personal computers, usually used for other goals.

Figure 2 presents a block diagram of a device for processing audio signals and video signals made with analog input 4 and output 5 of audio signals and can be connected to an external computer via USB 6. The device includes a processor 7, flash memory 8, analog-digital 9 and digital-to-analog 10 converters connected to the processor and connected, respectively, to the analog input and output of audio signals, and a controller 11 for transmitting data between the processor 7 and the external computer via the USB connector. The device may further include a built-in microphone.

In the implementation of the educational process, depending on the topics studied, the proposed technical solutions can be used in practical tasks as follows.

1. Signal transmission. Telegraph.

In the practical task, a table of correspondence of Morse codes and symbols was used. When you click on the letter of the alphabet, a Morse signal is reproduced, at the same time, is displayed on the monitor screen

code corresponding to it. The text is converted to Morse code as follows: the word or phrase written on the screen is translated into Morse code, voiced and displayed on the screen with dot-dash symbols. The inverse algorithm is also implemented, the student enters codes from the keyboard, and on the monitor screen receives the decryption result.

2. Storage and coding of digital information.

To get acquainted with the binary representation of numbers, numbers from 0 to 255 are entered from the computer keyboard. Next, they are displayed in binary form on the LED line of the AFS digital complex and on the computer monitor. A visual conversion from binary to decimal format is also implemented.

During the task, the logic of writing data to CD, DVD, or hard disk is clearly illustrated. The sound is input from the microphone, its temporary form (voltage from the microphone) is displayed, then this signal is converted to binary format, which is then recorded on digital storage media.

3. Sound in human life.

The practice demonstrates the coding of digital sound as a means of compressing music files. On the example of encoding audio file t3, compression of information with losses is shown - the smaller the file, the worse the quality.

Students are encouraged to listen to the sound of musical notes. The screen shows the time dependence of sound vibrations and their spectrum in the form of vertical lines on the graph. The ability to simultaneously play several notes and display the time dependence of the signal and its spectrum is implemented. Spectrum analyzer displays

low, mid and high frequencies. Sound is input from the microphone and its temporal shape and spectrum are displayed.

In the digital signal processing section, the equalizer was used as a device for distorting sound and applying echo by the example of microphone sound and playing a music file.

4. Telephone connection.

The practical task stipulates that by clicking on the buttons of the virtual digital keypad of the phone, you can see how the input number is displayed, the time form of the signals, and also its spectrum in the case of tone dialing. At the same time, analog and digital telephone communication is demonstrated and the telephone operation scheme (microphone-transmitter-receiver-microphone) is graphically explained.

5. Internet and dial-up communications.

The practical task explains the principle of operation of a modem device for modulating and demodulating signals. The process of transmitting information using a modem is shown. To send text messages, a message is written on one computer, encoded and output to the analog output of the AFS digital signaling complex. Further, the signal can be heard using the speakers, or transferred to another board in analog form, where it is decoded and displayed on the monitor of the second computer. In the absence of a second computer, the signal can be sent to the input of the digital complex and see the message on the monitor screen.

The principle of the Internet is represented by the description of the symbolic addresses and IP addresses of servers on the Internet.

Claims (8)

1. A system for processing and reproducing signals with analogue input and output of audio signals, comprising a monitor and a computer, characterized in that it further comprises a device for processing audio signals and video signals connected to a computer via a USB connector, made with analogue input and output of audio signals and including a processor , a memory unit connected to the processor, analog-to-digital and digital-to-analog converters connected to the processor and connected respectively to the analog input and output sound O signals. 2. The system according to claim 1, characterized in that the device for processing audio signals and video signals further includes a controller that transfers data between the device for processing audio signals and video signals and a computer via a USB connector. 3. The system according to claim 1, characterized in that it further comprises a microphone and / or headphones connected respectively to the analog input and output of the audio signals of the device for processing audio signals and video signals. 4. A device for processing audio signals and video signals made with analog input and output of audio signals and including a processor, characterized in that it is configured to connect to a computer via a USB connector and further includes analog-to-digital and digital-to-analog converters connected to the processor and connected respectively to the analog input and output of audio signals. 5. The device according to claim 4, characterized in that it further includes a controller for transmitting data between the processor and the computer via the USB connector. 6. The device according to claim 4, characterized in that it further includes a microphone connected to an analog input of audio signals. 7. The device according to claim 4, characterized in that it further includes a non-volatile rewritable memory unit connected to the processor. 8. The device according to claim 7, characterized in that the non-volatile rewritable memory unit is connected to the controller for transferring data between the processor and the computer via the USB connector.