AMR to CAF

Convert AMR to CAF with AMR to CAF Converter

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Total Audio MP3 Converter

Convert AMR to CAF

Total Audio MP3 Converter converts AMR to CAF as easy as 1-2-3. The software could encode CAF file with different codecs such as PCM 8-bit, PCM 16-bit, PCM 24-bit, PCM 32-bit, IMA ADPCM (4-bit), and GSM. The converter can also combine multiple AMR files to one CAF.

The software is also a powerful audio converter that converts any formats to common audio formats such as FLAC, AIFF, AAC, AMR, CAF, M4R (iPhone ringtone), M4A (MPEG-4 audio), MPA, ALAC (Apple Lossless), AU, etc. It could convert DVD to FLAC, AU to MPA, WMV to AIFF, MLP to FLAC, EAC3 to FLAC, H.263 to ALAC (Apple Lossless), H.264 to DTS, XVID to FLAC, and so on.

Total Audio MP3 Converter supports batch conversion and, is full compatible with 32-bit and 64-bit editions of Vista and Windows 7.

AMR to CAF Software is compatible with Windows 7, Vista, 2008, 2003, and 2000

What is AMR?
Adaptive Multi-Rate (AMR) is an 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. 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.

Key Features:

  • Sampling frequency 8 kHz/13-bit (160 samples for 20 ms frames), filtered to 200-3400 Hz.
  • The AMR codec uses eight source codecs with bit-rates of 12.2, 10.2, 7.95, 7.40, 6.70, 5.90, 5.15 and 4.75 kbit/s.
  • Generates frame length of 95, 103, 118, 134, 148, 159, 204, or 244 bits for bit rates 4.75, 5.15, 5.90, 6.70, 7.40, 7.95, 10.2, or 12.2 kbit/s, respectively
  • AMR utilizes Discontinuous Transmission (DTX), with Voice Activity Detection (VAD) and Comfort Noise Generation (CNG) to reduce bandwidth usage during silence periods
  • Algorithmic delay is 20 ms per frame. For bit-rates of 12.2, there is no 'algorithm' look-ahead delay. For other rates, look-ahead delay is 5 ms. Note that there is 5 ms 'dummy' look-ahead delay, to allow seamless frame-wise mode switching with the rest of rates.
  • AMR is a hybrid speech coder which uses Algebraic Code Excited Linear Prediction (ACELP)
  • The complexity of the algorithm is rated at 5, using a relative scale where G.711 is 1 and G.729a is 15.
  • PSQM testing under ideal conditions yields Mean Opinion Scores of 4.14 for AMR (12.2 kbit/s), compared to 4.45 for G.711 (u-law)
  • PSQM testing under network stress yields Mean Opinion Scores of 3.79 for AMR (12.2 kbit/s), compared to 4.13 for G.711 (u-law)

What is CAF?
Apple's Core Audio Format is a flexible, state-of-the-art file format for storing and manipulating digital audio data. It is fully supported by Core Audio APIs on Mac OS X v10.4 and later and on Mac OS X v10.3 with QuickTime 7 or later. CAF provides high performance and flexibility, and is scalable to future ultra-high resolution audio recording, editing, and playback.

Core Audio Format is designed to overcome limitations of older digital audio formats, including AIFF and WAV. Just like the QuickTime .mov container, a .caf container can contain many different audio formats, metadata tracks, and much more data. Not limited to a 4 GB file size like older digital audio formats, a single .caf file can theoretically save hundreds of years of recorded audio due to its use of 64-bit file offsets.

CAF files have several advantages over other standard audio file formats: unrestricted file size, safe and efficient recording, supports for many data formats, supports for many types of auxiliary data, and supports for data dependencies.

Step-by-Step Instructions to Convert AMR to CAF:

  1. Free Download Total Audio MP3 Converter
  2. Install the Program by Step-by-step Instructions
  3. Launch Total Audio MP3 Converter by Clicking Start -> All Programs -> Total Audio MP3 Converter -> Total Audio MP3 Converter
  4. Choose AMR Files

    5. Click "Add Files"
    Click "Add Files" to choose AMR files.

    Choose one or more AMR files
    Choose one or more AMR files you want to convert and then click Open. Total Audio MP3 Converter will open the files and get file information such as duration, bit rate, sample rate, and channels, and then list the information at conversion list.

  5. Choose Output Format

    6. to CAF
    Click on combo box of output format and then choose "to CAF".

  6. Convert AMR to CAF

    7. Click Convert
    Click "Convert" to convert AMR files to CAF format.

    Convert to One
    Alternatively, you can also click "Convert to One" to convert and combine all AMR files to one CAF.

    Converting AMR to CAF
    The software is converting AMR files to CAF.

  7. Play and Browse Outputted CAF File

    8. Play and Browse
    When conversion completes, you can right-click converted item and choose "Play Destination" to play the outputted CAF file; or choose "Browse Destination Folder" to open Windows Explorer to browse the outputted CAF file.

  8. Done
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AMR to CAF Software is 100% clean and safe to install. It's certified by major download sites.
AMR to CAF Software is 100% Clean!

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