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Convert OGM to AMR
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Total Audio MP3 Converter converts OGM 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 OGM Files
Click "Add Files" to choose OGM files and then add them to conversion
list.
Choose one or more OGM files you want to convert and then click Open.
- Choose "to AMR"
- Convert OGM to AMR
Click button "Convert" to convert all OGM files to AMR format.
The software is converting OGM 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 OGM?
Ogg Media (OGM), meaning Ogg Media File, is a container format (for video, audio
and subtitle streams). It was developed by Tobias Waldvogel and can do a few things
the common AVI format cannot. OGM's features include in particular:
- Chapter support
- Vorbis audio support (there is no standard way for AVI to support Vorbis,
making any attempt unreliable and potentially incompatible with players)
OGM files most often carry video encoded in the MPEG-4 ASP format and audio
in Vorbis or AC-3 (Dolby Digital).
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 OGM to AMR Related Topics:
MVI to AMR,
3G2 to AMR,
ASF to AMR,
MP2 to AMR,
NUV to AMR,
AMR to M4A,
MLP to AMR,
MJ2 to AMR,
MPC to AMR,
CDA to AMR,
M4B to AMR,
M2V to AMR,
OGA to AMR,
DTS to AMR,
CAF to AMR,
OMA to AMR,
OGG to AMR,
ALAW to AMR,
MTS to AMR,
MKA to AMR,
WM to AMR,
WAVE64 to AMR,
M2TS to AMR,
MP3 to AMR,
SHN to AMR,
S3M to AMR,
DVD to AMR,
3GPP to AMR,
AWB to AMR,
MOD to AMR,
ADX to AMR,
SWF to AMR,
XVID to AMR,
GXF to AMR,
MXF to AMR,
VCD to AMR,
RPL to AMR,
CD to AMR,
VOC to AMR,
AMR to AWB
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