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Method for automatically sectioning MP3 sound recording document in mobile phone

A recording file, automatic segmentation technology, applied in the direction of record carrier editing, digital recording/reproduction, etc., can solve problems such as inconvenience, MP3 segmentation processing software is uneven, MP3 files cannot be repaired, etc., to achieve the effect of convenient content format.

Inactive Publication Date: 2010-08-04
WINGTECH COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of processing requires the user to be equipped with a computer, and a U disk for dumping mp3 files is also required. In particular, the user needs to determine the interception location by himself, which is very inconvenient for long mp3 files.
Moreover, there are good and bad MP3 segmentation software on the computer, and users who are not familiar with the software often cause damage to the MP3 file due to misuse and cannot be repaired.

Method used

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  • Method for automatically sectioning MP3 sound recording document in mobile phone
  • Method for automatically sectioning MP3 sound recording document in mobile phone
  • Method for automatically sectioning MP3 sound recording document in mobile phone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] This embodiment is a specific application of automatic segmentation of MP3 recording files: the audio output port of the CD playback device is directly connected to the audio input port of the mobile phone, and different music pieces are automatically saved as independent files during the recording process, which is convenient for users to randomly select and play.

[0057] The above method includes the following specific steps:

[0058] ①The user selects the mute judgment condition, and the mute threshold is calculated as 5% of the maximum sampling value;

[0059] ②Initialize the audio compression module in the mobile phone, and initialize the silent zone timestamp to zero, which is set to the current system time when the silent zone is detected;

[0060] ③Create a new MP3 recording file and record the system time when the recording starts. In order to prevent the silence of less than 5 seconds from being split and saved into MP3 files that are too small, first record ...

Embodiment 2

[0072] This embodiment is another specific application of automatic segmentation of MP3 recording files: for the silence of more than 5 seconds, it can be saved as an independent file, which is convenient for the user to selectively delete to save storage space. Assume that the recording adopts 8-bit sampling precision, 32Kbps sampling rate, and each sampling value is represented by the symbol S k (t) where t represents the time period in which the sampled value is located, in seconds, t≥0; k represents the serial number of the sampled value in the time period t, 1≤k≤32000. Due to the large amount of data involved, S k (t) The specific data are no longer listed. Applying Equation (1) and setting α to be 1 / 2, Equation 4 is obtained as follows,

[0073] Cond 32000 ( t ) = Σ k = 1 ...

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Abstract

The invention relates to a method for automatically partitioning the MP3 recoding files in the mobile, including: 1. selecting the mute condition by the users and setting the mute threshold; 2. initializing the audio frequency compression module, resetting the timestamp in the mute area, if detecting the mute area, setting the timestamp as the current system time; 3. newly building a MP3 recording files and recording the system time of starting the recording; 4. sampling the audio frequency input, performing the MP3 compression on the current sampling value, writing in the obtained data into the MP3 files; 5. judging whether satisfying the presupposed mute condition, if true, stopping recording and maintaining the recording files. The invention partitions the recorded Mp3 files into a plurality of separate file for storage, selecting the corresponding file according to the requirement when reading, listening the content according to the sequence in turn, which is convenient for the mobile recording, particularly for the sectional content form such as recording the songs and the like.

Description

technical field [0001] The invention relates to a recording method, in particular to a method for automatically dividing MP3 recording files on mobile phones and the like. Background technique [0002] Whether it is other recording equipment or digital equipment with recording and playback functions such as mobile terminals, if the MP3 format is used for recording, first of all, the equipment needs to provide a MIC interface that can input audio sources, which can be either a general 3.5mm audio input port, or a It is a special interface developed by the equipment provider. Through this interface, the input audio signal is digitized according to the preset sampling rate and sent to the audio hardware or audio software module for compression. The specific method used is determined by the architecture of the digital device. The generated recording file is compressed and stored in the storage in the parts. Read the recording file when it needs to be played, and send it to the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B20/10G11B27/02
Inventor 刘海科
Owner WINGTECH COMM