RU168778U1 - MUSIC DISTRIBUTION SERVER - Google Patents

Abstract

The invention relates to a device for selectively distributing music to a plurality of jukeboxes, home entertainment systems or mobile phones having audio playback capabilities. The technical result is to reduce the amount of noise of musical data when recording them in a database. The server for distributing music contains connected in series: an audio input, a sigma-delta modulator with charge balancing, a digital integrator, a digital low-pass filter, a unit for processing and storing music data, and a feedback module, the input of which is connected to the output of a digital integrator, a phase detector, connected to the output of the feedback module, and a differentiator, the input of which is connected to the output of the phase detector, and the output to the sigma-delta modulator, a transceiver connected by two-way communication to a unit for processing and storing music data.

Description

FIELD OF TECHNOLOGY

The invention relates to a device for selectively distributing music to a plurality of devices for playing music files, in particular jukeboxes, home entertainment systems, mobile phones, personal computers, and the like.

BACKGROUND

The prior art server for the distribution of music, described in the application US 2002/0062261 A1, publ. 05/23/2002. This server includes a database that stores a lot of music data, as well as user registration data, and the selected music data is downloaded in response to a request from the user. The disadvantage of this server is the lack of noise filtering of music data transmitted for storage in the server database.

This device is selected as the closest equivalent.

DISCLOSURE OF A USEFUL MODEL

The technical task of the claimed utility model is to create a server for the distribution of music, providing filtering noise of musical data before storing them in a database.

The technical result is to reduce the amount of noise of musical data when recording them in a database and improving the quality of the output audio signal.

To achieve a technical result, the claimed server for distributing music comprises serially connected: an audio input, a sigma-delta modulator with charge balancing, a digital integrator, a digital low-pass filter, a unit for processing and storing music data, and a feedback module whose input is connected to the digital output an integrator, a phase detector connected to the output of the feedback module, and a differentiator, the input of which is connected to the output of the phase detector, and the output to the sigma-delta modulator, when moperedatchik connected two way communication to the processing unit and storing the music data.

These features are significant and are interconnected with the formation of a stable set of essential features sufficient to obtain the desired technical result.

The present utility model is illustrated by a specific example of execution, which, however, is not the only possible one, but clearly demonstrates the possibility of achieving the required technical result.

BRIEF DESCRIPTION OF THE DRAWINGS

In FIG. 1 is a general view of the claimed device.

IMPLEMENTATION OF A USEFUL MODEL

In particular, the claimed device 10 shown in FIG. 1, contains: audio input 1, sigma-delta modulator with charge balancing 2, digital integrator 3, digital low-pass filter 4, processing unit and storage of musical data 5, feedback module 6, phase detector 7, differentiator 8 and transceiver 9.

In order to save the musical composition in the server database, the audio signal is fed to the audio input 1 of the server 10, from where it then goes to the sigma-delta modulator 2 and the signal is digitized in accordance with the specified characteristics in the working frequency band taking into account the correction signal. Next, the digitized signal is processed by the integrator 3 and the integrated signal from the digital integrator 3 is fed to a digital filter 4, which suppresses components with frequencies above the Kotelnikov frequency (it is half the sampling frequency of the ADC). Next, the signal from the filter 4 enters the processing unit and storage of musical data 5, where it is converted into a given form (format) for storage. To determine the correction signal, a feedback module 6, a phase detector 7, and a differentiator 8 are introduced into the device. Feedback module 6 is a fractional frequency divider. This module receives the integrated signal from the output of the digital integrator, processes it in accordance with a predetermined algorithm, and transfers it to the phase detector 7 and differentiator 8. The integrated signal processing algorithm is selected in accordance with the error value that needs to be adjusted. A phase detector 7 compares the received signal with a reference signal and, through a differentiator 8, generates a correction signal for a sigma-delta modulator 2. Methods of generating a reference signal for phase detectors are well known in the art and are not disclosed in this application. As an example, a reference signal generator may be used to generate a reference signal.

The transceiver 9 can be made in the form of a wireless communication module (such as Wi-Fi, Bluetooth, etc.) or a wired communication device (USB, RG-59, optical communication, Ethernet controller, etc.) and is intended for transmitting music data received from the processing and storage unit of music data 5 to various user devices in accordance with a request received from them.

The device is a single design, and all elements of the claimed device can also be placed in a single package, combined by a common data bus.

The claimed server is based on an advanced computing device, such as, for example, a personal computer, which includes the necessary set of hardware designed for data processing. Such means are a processor unit containing one or more processors, RAM and a means for storing information (Flash memory, HDD, SSD, ROM, EEPROM, etc.), which form a block for processing and storing music data 5 in the claimed solution. The design of said block 5 depends on the specific technical implementation of the server.

Thus, due to the use of a sigma-delta charge balancing modulator with a digital low-pass filter in the design of the device and due to the provision of feedback for adjusting the signal generated by the sigma-delta modulator, the noise in the music data stored in the memory is reduced, with a corresponding increase output signal quality.

Claims (1)

A server for distributing an audio signal, containing serially connected: audio input, a sigma-delta modulator with charge balancing, a digital integrator, a digital low-pass filter, a unit for processing and storing music data, and a feedback module, which is a fractional frequency divider connected to the digital output an integrator, wherein the feedback module is configured to receive an integrated signal from the output of a digital integrator, the processing algorithm of which is selected in accordance with another error that needs to be corrected, a phase detector connected to the output of the feedback module, and a differentiator whose input is connected to the output of the phase detector, and the output to the sigma-delta modulator, a transceiver connected by two-way communication to the unit for processing and storing music data, the phase detector is configured to compare the received signal from the feedback module with the reference signal and generate, through a differentiator, a correction signal for the sigma-delta modulator for ktirovki signal generated by the sigma-delta modulator.

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