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DTMF signal decoding method and device, equipment and storage medium

A signal decoding and decoding device technology, applied in the field of DTMF signal decoding and computer-readable storage media, can solve problems such as unfavorable equipment promotion, increased equipment hardware cost, and high price.

Pending Publication Date: 2021-04-20
北京浪潮数据技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the special DTMF signal decoding chip is expensive, which causes the hardware cost of the equipment to rise, which is not conducive to the promotion of the equipment.

Method used

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  • DTMF signal decoding method and device, equipment and storage medium
  • DTMF signal decoding method and device, equipment and storage medium
  • DTMF signal decoding method and device, equipment and storage medium

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Embodiment Construction

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] At present, only a dedicated DTMF signal decoding chip can be used to perform DTMF signal decoding. However, the special-purpose DTMF signal decoding chip is expensive, which increases the hardware cost. Therefore, in the embodiment of the present invention, the FPGA is used to replace the dedicated DTMF signal decoding chip to perfor...

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Abstract

The invention discloses a DTMF signal decoding method, which is applied to an FPGA, and comprises the following steps: setting a sampling frequency of a DTMF signal; sampling the DTMF signal according to the sampling frequency to obtain a DTMF signal to be decoded; and calling a DTMF signal decoding program to decode the DTMF signal to be decoded to obtain decoding information of the DTMF signal to be decoded. According to the method, the DTMF signal to be decoded is acquired by sampling the DTMF signal, and the DTMF signal to be decoded is decoded by calling a DTMF signal decoding program by directly utilizing an FPGA under the condition of ensuring the decoding quality and the decoding efficiency, so that an expensive special DTMF signal decoding chip is prevented from being adopted to execute the decoding operation, and the hardware cost is reduced. The invention further discloses a DTMF signal decoding device and equipment and a computer readable storage medium, which have the above beneficial effects.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a DTMF signal decoding method, device, equipment and computer-readable storage medium. Background technique [0002] A DTMF (Dual Tone Multi Frequency) signal consists of a high frequency group and a low frequency group, and each of the high and low frequency groups contains 4 frequencies. A high-frequency signal and a low-frequency signal are superimposed to form a combined signal, representing a number. DTMF signal has 16 codes. At present, in the field of communication technology, a dedicated DTMF signal decoding chip is generally used to decode DTMF signals. However, the special-purpose DTMF signal decoding chip is expensive, which increases the hardware cost of the equipment, which is not conducive to the promotion of the equipment. [0003] Therefore, it is a technical problem to be solved by those skilled in the art how to reduce the hardware cost in the c...

Claims

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Application Information

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IPC IPC(8): H04M1/50H04Q1/457
Inventor 李宁
Owner 北京浪潮数据技术有限公司
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