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Convert AMR to AAC

AMR to AAC converter easily converts AMR to AAC. For an online conversion, upload AAC. Next, select AAC as output and click on convert. The conversion takes a few seconds and the document is ready for downloading in AAC format. Converting from AMR to AAC format is quite easy. Download the file immediately or send the link to your email for downloading at your own convenience. AMR is an audio compression file format used for storage of spoken audio suitable for mobile phones and used for audio recordings. Advanced Audio Coding or AAC is a lossy audio compression file format used for digital audio compression. AAC usually attains better sound quality than MP3 at comparable bit rates, and is standardized as part of the MPEG-2 and MPEG-4 specifications.


Additional information about AMR file format

File extension .AMR
File category AUDIO
Additional information about The Adaptive Multi-Rate (AMR) codec is an audio compression format enhanced for speech coding.
Description The Adaptive Multi-Rate (AMR) codec is an audio compression format enhanced for speech coding. It is also a file format for holding audio speech via the AMR codec. Storage of short audio recordings in the AMR format is a feature common to numerous modern mobile handsets and either free or patented programs exist for conversion between these formats.
Technical description AMR speech codec is made up of a multi-rate speech codec in narrowband (200–3400 Hz) that encodes these types of signals at variable bit rates ranging between 4.75 to 12.2 kbit/s with toll quality audio (comparable to that of an ordinary long distance call) starting at 7.4 kbit per second. AMR is now widely used in GSM[4] and UMTS, having been adopted as the standard speech codec in October 1999 by 3GPP . Using link adaptation it is able to choose from one of eight different bit rates based on the particular link conditions.
Additional information
Useful links
File conversion Convert a file to AMR
Developer 3rd Generation Partnership Project (3GPP)
Associated programs Apple iPhone
AMR Player
Open Source software
Real Player
VLS Media Player


Additional information about AAC file format

File extension .AAC
File category AUDIO
Additional information about MPEG - Moving Picture Experts Group, refers to standards used for coding audio-visual information in a digital compressed format
Description MPEG and MPG are very similar in design and function. MPEG is a more recent format which branches off into standards MPEG-1 all the way through to MPEG-21. They feature a lossy compression that allows for ease of downloading and uploading using smaller file sizes and at the same time retaining high quality. These file storage for audio and visual elements enable the two pieces to remain in sync. MPEG-1 files are maintained for the audio elements while MPEG-2 are for the video/audio elements namely for cable and satellite broadcasts. The MPEG system is a precursor to MP3 file. MPEG-1 and MPEG-2 files are compatible with Mac and Windows due to various programs supporting the files.
Technical description MPEG-1 is for the coding of video and associated audio for storage up to 1.5 Mbits/s (ISO/IEC 11172), but also shows capability for higher bit rates. Therefore MPEG-1 is suitable for encoding to a CD or low-quality DVD video. MPEG-2 conversely is used for broadcast-quality television with high definition features. MPEG-3 handles the standardization of scalable and multi-resolution compression for HDTV but but has been later combined with MPEG-2 due to close resemblance. MPEG-4 attained better rates of compression than MPEG-2 with more efficient coding methods and eventually became useful for rendering computer graphics. MPEG-7 falls under the ISO-IEV 15938 standard, and the MPEG-21 falls under ISO/IEC 21000 standard, setting frameworks for multimedia and allows for copyrights.
Additional information
Useful links
File conversion Convert a file to AAC
Developer IOS/IEC
Associated programs Windows Media Player
Windows Movie Maker
VLC Video Player
Apple iTunes
Quicktime Player
Adobe Flash
Cyberlink video editing software
Xilisoft Video Converter