Convert AMR to MP3, WMA, WAV, OGG, AAC, MKA, etc. Convert any audio formats to AMR audio. Extract AMR audio from your video file such as AVI, MP4, FLV, WMV, DivX, etc.

Keep excellent audio quality during the amr converting. Adjust volume, Sample Rate, Channel, Bit Rate, ... as you like.

Main Features——Dream AMR Converter

• AMR Converter is an AMR utility which can help you convert MP3, WMA, WAV, M4A, MP2, AC3, AAC files to AMR format used for your cell phone, and also convert AMR to other audio formats. In addition, you can also use the tool to extract audio from AVI, MP4, WMV, 3GP, MOV, VOB, MPG, ASF, RM, RMVB, FLV, etc video files.
• AMR Converter performs in batch mode so that you can easily convert an entire list of audio files to/from AMR with few efforts. It lets you trim any segment of your video/audio files by setting the start time and end time.
• AMR Converter provides you with the optimized default settings. However, there are still a lot of settings can be tweaked to fit your special need such as sample rate, bit rate, audio encoder, channel, and volume.
• AMR Converter is designed for anyone who wants to convert mp3 to amr, wav to amr, amr to wav, 3gp to amr, amr to wma, amr to aac, etc.
• Not only an AMR Audio Converter, it is also an audio converter and video to audio converter, so you can enjoy any music on all popular MP4/MP3 players like iPod, iPhone, Zune, PSP, iRiver, Archos, Creative Zen etc

Customize File Size and Format-Dream AMR Converter

File size and the parameters can be flexible to customize and choose

• Choose or Customize
  Choose from an array of predefined file formats for conversion or manually set your own file format and then save as your own profile for future use.
• Convert Video Segment
  Clip only a segment from a video you choose by specifying the start time and duration.
• Merge Video
  If you want to play several segments at one time, you can merge several videos into one file, in the setting page, choose merger into one file.
• Split Video
  Split a large file into several so you can fit them to play on your device by segments; you can set a split time or split size so it automatically divides these files uniformly.

References——Dream FLV to mp4 Converter

Supported devices	AMR Converter:MP4,IPhone,Zune,Mobilephone, MP4/MP3 players like iPod, iPhone, Zune, PSP, iRiver, Archos, Creative Zen etc.
Supported Input Formats	Video: WMV, 3GP, MOV, VOB, MPG, ASF, FLV, AVI,RM,RMVB, MP4, MKV, etc Audio: AMR, WAV, WMA, M4A, MP3, MP2, AAC, AC3, etc.
Supported Output Formats	Audio: AMR, WAV, WMA, M4A, MP3, MP2, AAC, AC3, etc

 

System Requirements -Dream FLV to MP4 Converter

OS	Microsoft® Windows XP (SP2 or later), Windows Vista, Windows 7
Processor	1GHz Intel/AMD processor or above
RAM	256MB RAM (512MB or above recommended)
Free Hard Disk	30MB space for installation
Graphic Card	Super VGA (800×600) resolution, 16-bit graphics card or higher

 

About AMR

The Adaptive Multi-Rate (AMR or AMR-NB) audio codec is a patented audio data compression scheme optimized for speech coding. AMR was adopted as the standard speech codec by 3GPP in October 1998 and is now widely used in GSM and UMTS. It uses link adaptation to select from one of eight different bit rates based on link conditions.
AMR is also a file format for storing spoken audio using the AMR codec. Many modern mobile telephone handsets will allow you to store short recordings in the AMR format, both open source and commercial programs exist (see Software support) to convert between this and other formats such as MP3, although it should be remembered that AMR is a speech format and is unlikely to give ideal results for other audio. The common filename extension is .amr. There also exists another storage format for AMR that is suitable for applications with more advanced demands on the storage format, like random access or synchronization with video. This format is the 3GPP-specified 3GP container format based on ISO base media file format.
The frames contain 160 samples and are 20 milliseconds long. AMR uses different techniques, such as ACELP, DTX, VAD and CNG. The usage of AMR requires optimized link adaptation that selects the best codec mode to meet the local radio channel and capacity requirements. If the radio conditions are bad, source coding is reduced and channel coding is increased. This improves the quality and robustness of the network connection while sacrificing some voice clarity. In the particular case of AMR this improvement is somewhere around S/N = 4-6 dB for usable communication. The new intelligent system allows the network operator to prioritize capacity or quality per base station.
There are a total of 14 modes of the AMR codec, 8 are available in a full rate channel (FR) and 6 on a half rate channel (HR).

http://en.wikipedia.org/wiki/Adaptive_Multi-Rate_audio_codec