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Signal detection method and device

A signal detection and frequency domain signal technology, applied in the field of signal processing, can solve the problem of low accuracy and achieve the effect of improving accuracy

Active Publication Date: 2020-01-21
GUANGZHOU KUGOU COMP TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problem that when the terminal uses the audio signal with clipping distortion directly as a broken sound signal, not all the multimedia files recalled by the multimedia file provider have a broken sound signal, and the recall accuracy is not high. The example provides a signal detection method and device

Method used

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  • Signal detection method and device
  • Signal detection method and device
  • Signal detection method and device

Examples

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Embodiment Construction

[0059] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

[0060] In the embodiment of the present invention, the terminal can be a mobile phone, a tablet computer, an e-book reader, an MP3 (Moving Picture Experts Group Audio Layer III, moving picture expert compression standard audio layer 3) player, an MP4 (Moving Picture Experts Group Audio Layer IV , Motion Picture Expert compresses the standard audio level 4) Players, laptops and desktops, etc.

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Abstract

The invention discloses a signal detecting method and a signal detecting device, belonging to the technical field of signal processing. The method comprises the following steps: carrying out time-frequency transformation on each audio signal frame in a multi-media file, thus obtaining a frequency domain signal corresponding to each audio signal frame; for each frame of audio signals, according to the effective energy and distortion energy of the frequency domain signal, determining that whether the audio signal frames corresponding to the frequency domain signals are the cracking voice frames or not; when the cracking voice frames exist, detecting that whether the number of the continuous cracking voice frames in the multi-media file achieves the preset number or not; and when the number of the continuous cracking voice frames in the multi-media file achieves the preset number, determining that the cracking voice signals exist in the multi-media file. With the adoption of the method and the device provided by the invention, the problem that not all the multi-media files called back by a provider contain the cracking voice signals, and thus the recalling accuracy is not high, is solved, and the accuracy in calling back the multi-media files with the cracking voice signals of the provider is improved.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to a signal detection method and device. Background technique [0002] The terminal provides the user with multimedia files such as songs, audiobooks, and radio through the audio player. When the terminal plays an audio signal (broken sound signal) whose volume exceeds the upper limit of the volume, the user will hear the noise of "唦唦". Therefore, in order to improve the effect of the terminal playing multimedia files, the provider of the multimedia file needs to check whether the multimedia file It detects the broken sound signal, and recalls the multimedia files with the broken sound signal. [0003] Related technologies provide a method for detecting whether there is a broken sound signal in a multimedia file. The method includes: detecting whether there is clipping distortion in the audio signal of the multimedia file; and determining whether there is a broken sound s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L25/60G10L25/18G10L25/21
CPCG10L25/18G10L25/21G10L25/60
Inventor 劳振锋
Owner GUANGZHOU KUGOU COMP TECH CO LTD