CDM-570A/L-IPEN Satellite Modem
... When observed on a spectrum analyzer, only the Composite is visible. Carrier 1 and Carrier 2 are shown in Figure 2 for reference only.
As DoubleTalk Carrier-in-Carrier allows equivalent spectral efficiency using a lower order modulation and/or code rate, it can reduce the
power required to close the ...
8.2.3 Arithmetic Coding (cont.)
... Unlike the variable-length codes described previously, arithmetic
coding, generates non-block codes. In arithmetic coding, a one-toone correspondence between source symbols and code words does
not exist. Instead, an entire sequence of source symbols (or message)
is assigned a single arithmetic cod ...
delay-free lossy audio coding using shelving pre- and post
... From this ê(n), the level-estimate v(n + 1) to be used for the
next sample is determined. By further adding the predicted
value back on the prediction error, we obtain the reconstructed
signal x̂(n) = ê(n) + p(n), again both in decoder and encoder.
The predictor uses x̂(n) to calculate the predict ...
Causes for Amplitude Compression
... function of the real electric input power supplied to the speaker and the convection
cooling depending on movement of the coil. Clearly at the resonance where the input
impedance is maximal the heating of the coil is minimal.
The second source of amplitude compression of the fundamental component ar ...
... • Color bit depth : The size of the video is affected
by the number of pixel colors in each frame.
Reducing the number of colors from 24- to 8-bit
color will drastically reduce the file size of your
video, just as it does for still images. Of course,
you also sacrifice image quality.
• Data rate (bi ...
16826 - Public Address System
... Controls and Indicators: 5 input level, 1 master, 1 base and 1 treble each 3 db per
step to +15 db, 1 monitor, 1 output switch, 1 power switch, 1 VU range, 5 speech
filter switches (-10 db at 100 Hz), 5 input attenuator switches, illuminated VU
Preliminary User`s Manual
... electro-optical VCA principle. This method - controlling the gain by
the means of a light dependent resistor - is not as fast as the varimu method, but much more subtle sonically. This principle is known
from e.g. the classic Universal audio LA2, LA3 and LA4 compressors,
although we use a considerab ...
ECE 3552-Microcomputer System 2 Spring 2007 LAB Exercise # 1
... largest. For a Divisor of 1 and SCLK at the default, the baud rate is 3,375,000. The
manual appears to state on page 13-1 that the maximum baud rate for our purposes is
115.2Kbps. This is due to a change in the Divisor. The data must be compressed and/or
shifted to be able to transmit. This is where ...
In digital signal processing, data compression, source coding,or bit-rate reduction involves encoding information using fewer bits than the original representation. Compression can be either lossy or lossless. Lossless compression reduces bits by identifying and eliminating statistical redundancy. No information is lost in lossless compression. Lossy compression reduces bits by identifying unnecessary information and removing it.The process of reducing the size of a data file is referred to as data compression. In the context of data transmission, it is called source coding (encoding done at the source of the data before it is stored or transmitted) in opposition to channel coding.Compression is useful because it helps reduce resource usage, such as data storage space or transmission capacity. Because compressed data must be decompressed to use, this extra processing imposes computational or other costs through decompression; this situation is far from being a free lunch. Data compression is subject to a space–time complexity trade-off. For instance, a compression scheme for video may require expensive hardware for the video to be decompressed fast enough to be viewed as it is being decompressed, and the option to decompress the video in full before watching it may be inconvenient or require additional storage. The design of data compression schemes involves trade-offs among various factors, including the degree of compression, the amount of distortion introduced (when using lossy data compression), and the computational resources required to compress and decompress the data.