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Convert MPP to AMR
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Total Audio MP3 Converter converts MPP 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 MPP Files
Click "Add Files" to choose MPP files and then add them to conversion
list.
Choose one or more MPP files you want to convert and then click Open.
- Choose "to AMR"
- Convert MPP to AMR
Click button "Convert" to convert MPP files to AMR format.
The software is converting MPP files to AMR format.
- Play and Browse AMR File
When conversion completes, you could right-click converted AMR file and choose
"Play Destination" to play the outputted AMR file; or choose "Browse
Destination Folder" to open Windows Explorer to browse the AMR file.
Top
What is MPP?
MPP is another extension of Musepack (MPC). MPP was developed using the MP2 codec
as a starting point, but many features have since been added, including:
- subband-wise selectable M/S encoding (as in AAC)
- Huffman coding (as in MP3 and AAC, but more efficient). Since SV8 the bitstream
is compressed by highly optimized canonical huffman tables that yields 2% smaller
files and faster decoding
- noise substitution techniques (as in ATSC A-52 and MPEG-4 AAC V2)
- pure variable bitrate between 0 and 1300 kbit/s (when needed)
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 MPP to AMR Related Topics:
PVA to AMR,
MPEG to AMR,
WM to AMR,
STR to AMR,
SWF to AMR,
SOL to AMR,
THD to AMR,
NSV to AMR,
GXF to AMR,
OMA to AMR,
OGV to AMR,
CAF to AMR,
HDTV to AMR,
ALAW to AMR,
NUV to AMR,
M2A to AMR,
XA to AMR,
MPA to AMR,
FLV to AMR,
ADTS to AMR,
SMK to AMR,
NUT to AMR,
MOV to AMR,
NSA to AMR,
3GP2 to AMR,
MJ2 to AMR,
MKA to AMR,
FLIC to AMR,
MP2 to AMR,
DNXHD to AMR,
DVR-MS to AMR,
MPP to AMR,
VQF to AMR,
MTV to AMR,
3GPP to AMR,
SHN to AMR,
F4B to AMR,
DTS to AMR,
VFW to AMR,
PSX to AMR
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