Objective To explore the procreation ways of audio files stored with “voice memo” APP under IOS of iPhone or iPad. Methods Experiments were tried on the “voice memo” functions from model-various iPhone or iPad devices, having been undertaken of such functional operations as recording, clipping, sharing, saving, replacing and modifying file names so that the relevant metadata and tail information were generated into the resultant audio files. Comparisons were carried out among the resulted information so as to seek their procreation ways. Through contrasting both the metadata and tail information from the audio files that were transferred and dumped between the apps of “voice memo” and “wechat” and “file”, how these information contents were conveyed and delivered was explored. Results Both the metadata and tail information showed regular discrepancy among the resultant audio files if different functional operations of “voice memo” were adopted into an audio file. Similar regularity of alteration was also found when audio files were transferred and dumped between the apps of “voice memo” and “wechat” and “file”. Conclusion An audio file can be judged of its procreation way with examination into its metadata and tail information from the “voice memo”.
Key words
voice memo /
audio file /
procreation way
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Footnotes
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