It is a language repetition learner for easy and convenient section repetition English study using Ringdroid's brilliant wave form control power and automatic speech segmentation in sentence units using FFMPEG.

*In the upgraded v3.0, sound (mp3, m4a.wav) files and video (mp4) files are supported, and mpg123 is added to load a larger capacity faster.
1. The most difficult part of English learning (sentences) is marked with 'O', the most important part of hearing loss is marked with 'O_', and sentences or parts you want to skip are marked with 'X'. The highest peak of English repetition learning that enables intensive section repetition and reproduction learning by erasing
2. To enable efficient English study, automatic segmentation of individual sentences, reclassifying them into groups, and distinguishing them by individual dialogs to enable section-repeat-playable English learning
3. An innovative English study app for section repeat play learning that can freely designate or release the number of repetitions and learning ranges for each individual sentence, specific area, or individual group
4. The definitive version of English repetition learning through section repeat play that can freely modify, reorganize, store, share, and manage voice segments according to the user's preference
6. Intuitive and beautiful UI and free and smooth zoom-in and zoom-out support of audio waveforms, it is a section-repeatable learning machine for studying English that pleases the eyes and stimulates the motivation to learn
7. Support pdf, txt file
8. 0.5~2.5x speed support

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SonicCyclone v3.0 Main Features
1. Sentences are automatically segmented through waveform analysis.
2. Supports sound (mp3, m4a, wav) and video (mp4) with subtitles at the same time.
3. Video supports single and double subtitles at the same time. Therefore, you can learn while watching English-Korean subtitles at the same time by designating English as the first subtitle and Korean as the second subtitle.
4. The repeat function supports one-time repeat, user-specified repeat, and infinite repeat, and supports group repeat and all repeat at the same time. In addition, it supports user selection repetition by group and specified repetition (refer to the manual).
5. By supporting the grouping and segmentation function by main content, you can learn by division and at the same time support the whole learning mode.
6. As part of the easy bookmark function, you can easily select and learn important and unimportant sentences with one click by giving O, X, and O_ marks to the most important sentences, and all this data is stored under the corresponding file for future use. It is saved in a subfolder and can be copied and reused in other devices.
7. The video screen and waveform analysis window can be easily reduced or enlarged according to your convenience.

Restrictions and Cautions
1. For sound files (mp3, m4a, wav), it is recommended to use files that do not exceed 1-2 hours (about 60-120 megabytes), and video files should not exceed 1-2 GB. (v3.0)
2. Supported Android versions have been upgraded from 4.4 (Api 19) Kitkat to 7.0 (Api 24) Nougat or higher.

* To use your personal mp3, m4a, wav, and mp4 files in this app (Pro version), copy them to the folder specified below.

android\data\com.soniccyclone.android\files

If you want to use a text file containing the contents of the file you want to use together, you can make it the same as the file name except for the file extension.
(ex> Lesson01.mp3, Lesson01.txt, Lesson01.m4a, Lesson01.mp4, Lesson01.srt (first subtitle), Lesson01^.srt (second subtitle)
When loading an mp3 file, if a text file (.txt) with the same name exists, it is loaded at the same time.
Of course, users can also import and use txt and pdf files separately.

*For other detailed usage, refer to the 'How to use' Manual of the app.