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Convert MP1 to AMR
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Total Audio MP3 Converter converts MP1 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 MP1 Files
Click "Add Files" to choose MP1 files and then add them to conversion
list.
Choose one or more MP1 files you want to convert and then click Open.
- Choose "to AMR"
- Convert MP1 to AMR
Click button "Convert" to convert all MP1 files to AMR format.
The software is converting MP1 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 MP1?
MPEG-1: This first set of standards was developed for audio and video compression.The
video format of MPEG-1 was used to store movies on CDs, known as Video CD, or
VCD. Quality is equal to that of a VHS tape, and compatibility playback on CD/DVD
players is high. One drawback of MPEG-1 is that it only supports progressive footage,
verses the inclusion of interlaced. These terms relate to the way a picture paints
itself across a screen. Progressive monitors (including progressive TVs) paint
a picture 'from top to bottom' progressively in a single, sequential pass. Interlaced
displays paint every other line, then fill in the odd lines in a two-pass process.
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 MP1 to AMR Related Topics:
NSA to AMR,
MLP to AMR,
XA to AMR,
NSV to AMR,
WMD to AMR,
IT to AMR,
AMR to M4B,
AMR to OGG,
HDTV to AMR,
WM to AMR,
QCP to AMR,
STR to AMR,
AMV to AMR,
SPX to AMR,
AMR to WAV,
VQF to AMR,
MP4 to AMR,
DAT to AMR,
OGV to AMR,
MPC to AMR,
3GPP to AMR,
S3M to AMR,
H264 to AMR,
VCD to AMR,
MVI to AMR,
OMA to AMR,
OGG to AMR,
DV to AMR,
M4B to AMR,
3G2 to AMR,
XVID to AMR,
MPA to AMR,
CD to AMR,
WMA to AMR,
M1V to AMR,
DTS to AMR,
SMK to AMR,
AWB to AMR,
AMR to M4A,
MP1 to AMR
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