Online and free mp3 to m4a converter Fast and easy Just drop your mp3 files on the page to convert m4a or you can convert it to more than 250 different file. After your first download, the encoding software should cache to your browser making this an offline audio converter. What audio formats can I convert? You can convert to and from the following formats: aac, aiff, flag, ogg, opus, m4a, m4r, mmf, mp3, wav, wma.
You can convert M4R file to MP3 as well as to variety of other formats with free online converter.
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iPhone Ringtone File
| File extension | .m4r |
| File category | audio |
| Description | This format is used in smartphones of the iPhone series. Mainly this format is an AAC and M4A file. Not all audio files of the iTunes store can be converted to M4R. When syncing with an iPhone and a computer, these files are automatically moved to the phone. These files can be purchased or downloaded from iTunes. Moreover, audio files of other formats can be converted to M4R format. This format ensures possible best ringtone for iPhone. |
| Technical details | M4R differs from MP3 because of compression. This format is a type of MPEG-4 standard under the ISO-IEC standard 14495-3. Despite auditory masking, a lossy compression of this format is similar to AAC and MP3 files. It helps to shrink the audio by removing the data and audio, which can not be sensed by the human ear. Meaning M4R can produce high-end audio file without acquiring large space. Users can use any of their desired audio as their choice (like ringtone or alert tone). |
| Programs | |
| Main program | Apple iTunes |
| Developer | Apple Inc |
| MIME type | audio/aac |
MP3 Audio File
| File extension | .mp3 |
| File category | audio |
| Description | MP3 (formally MPEG-1 Audio Layer-3 or MPEG-2 Audio Layer-3) is a digital format for storing audio files and audio streaming. MPEG programmers designed the format. It is one of the most required codecs for digital coding. The format is widely used in various file-sharing sites for evaluation downloading. Due to lossy compression in this audio format, it is possible to compress CD tracks up to 1/10 of their original size while maintaining high playback quality. Moreover, it can be encoded at higher or lower bit rates to adjust the resulting quality. Overtones, which cannot be perceived by a human ear, are removed. Complex algorithms allow for a smaller size of tracks. As a result, one compact disk can contain several hundred songs. MP3 is compatible with all the most popular operating systems and is supported by most modern DVD-players and music systems. |
| Technical details | Before MP3 introduction, MPEG-1 had been widely used. That format contained not only audio data but images as well. MP3 breaks an audio file into parts of the same length. When the processing is over, each part is packed into its frame. It involves the spectral limit technology that requires a continuous input signal to provide the use of two adjacent structures. When spectral deleting is over, the file is to be compressed with mathematic methods. If necessary, the compression rate can be changed, even inside the same frame. Files of 128 kbit/s have 11-fold compression. Further reduction of the file size will lead to a significant deterioration in sound quality. |
| Programs | VLC media player jetAudio Audacity Plex Media Center Xine |
| Developer | Moving Picture Experts Group |
| MIME type | audio/mp3 audio/mpg audio/x-mpeg audio/mp3 audio/x-mpg |
FAQ
m4r converter
Mp3 M4r Converter Online
The software is an all in one audio converter that supports more than 100 audio and video file formats. And, it converts files and keeps ID3 tag when converting.
You could convert formats between audio files, for example, convert MP3 to M4R, convert WAV to MP3. It is also possible to convert video file to audio format, for example, convert AVI to MP3, convert MP4 to MP3. And, you could change encoding parameters of target files such as sample frequency, bit rate, channels, and quality. So it is possible to customize sound file size and sound quality. MP3 M4R Converter supports ID3 tag. You could enable it to add or keep ID3 tag when converting files. You could change volume when converting either.
MP3 M4R Converter supports batch conversion. You could convert bulk of files at a time. And, the software is full compatible with Vista and Windows 7.