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Convert 4XM to AMR
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Total Audio MP3 Converter converts 4XM files to AMR format.
The software is an all in one audio converter that supports more than 90 audio
and video files as input, and converts to popular formats such as MP3, WAV, AAC,
M4A, OGG, WMA, and AMR.
Total Audio MP3 Converter also supports batch conversion, and is full compatible
with Vista and Windows
7.
- Free Download
Total Audio MP3 Converter here and then install the software
by instructions
- Launch Total Audio MP3 Converter
- Choose 4XM Files
Click "Add Files" to choose 4XM files and then add them to conversion
list.
Choose one or more 4XM files you want to convert and then click Open.
- Choose "to AMR"
- Convert 4XM to AMR
Click button "Convert" to convert all 4XM files to AMR format.
The software is converting 4XM files to AMR format.
- Play & Browse
When conversion completes, you could right-click converted item and choose "Play
Destination" to play the destination file; or choose "Browse Destination
Folder" to open Windows Explorer to browse the destination file.
Top
What is 4XM?
4XM file is known as a 4X Movie Format. The 4xm file format transports video data
compressed with 4X Technologies' proprietary 4xm Video codec. It also transports
audio data interleaved with the coded video chunks. The format supports multiple
audio language tracks, as well. The audio can be either uncompressed PCM or a
custom packing for IMA ADPCM: 4X IMA ADPCM.
The technology is intended for use in computer and console games.
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)
Convert 4XM to AMR Related Topics:
3G2 to AMR,
MPGA to AMR,
AU to AMR,
VMD to AMR,
M4B to AMR,
DTS to AMR,
OGM to AMR,
DV to AMR,
FLIC to AMR,
SMK to AMR,
WMV to AMR,
MMF to AMR,
AMR to AWB,
MLP to AMR,
ALAW to AMR,
3GP2 to AMR,
QT to AMR,
CAF to AMR,
STR to AMR,
GXF to AMR,
AMR to WAV,
OGV to AMR,
WM to AMR,
W64 to AMR,
DXA to AMR,
XA to AMR,
CDA to AMR,
WAVE64 to AMR,
VQF to AMR,
MPE to AMR,
AVI to AMR,
MXF to AMR,
QCP to AMR,
SPX to AMR,
FLV to AMR,
NSV to AMR,
M2V to AMR,
HDTV to AMR,
MP1 to AMR,
MP3 to AMR
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