2. A digital signal processing system with analog audio signal
input in the range of 0-20 Khz uses oversampling techniques and a
second order sigma delta modulator to convert the analog signal
into a digital bit stream at a rate of 3.072 Mhz.
i) Explain how the digital bit stream may be converted in to a
digital multibit stream for x(n).
ii) Determine the overall improvement in signal to quantization
noise ratio made possible by oversampling and noise shaping and...
Design an analog-digital converter circuit with OpAmp that
receives a 5 Vp sinusoidal signal and a 3.5 V trip level as input.
It must deliver a TTL (Low / High) signal as output.
Design an analog-digital converter circuit with OpAmp that
receives a 5 Vp sinusoidal signal and a 3.5 V trip level as input.
It must deliver a TTL (Low / High) signal as output.
Analog-to-Digital convertor, modified. Assume that you
have a 12-bit A/D converter that can digitize an analog voltage
over the range of 0.00 Volts to + 3.30 Volts (just like the one in
the TM4C123G).
(a) What is the minimum voltage that an analog
input voltage could change and be guaranteed to be detected by a
change in the digital output value? E.g. in millivolts or
microvolts.
(b) What is the binary number that represents an
analog voltage of +1.11 volts?...
(a) For a ±10V digital-to-analog 10-bit converter, what is the analog equivalent of digital number 183?
(b) For a ±10V digital-to-analog 10-bit converter, what is the analog equivalent of digital number 1301?
(c) For a 0 − 10V analog-to-digital 10-bit converter, what is the digital equivalent of an analog 2.355V?
(d) For a ±5V analog-to-digital 12-bit converter, what is the digital equivalent of an analog 4.265V?
A GDP analog that can't be converted to GTP was added to
a cell. The GDP analog otherwise behaves the same as authentic GDP.
When g-proteins bind to the GDP analog, they are inactive, just
like when they bind authentic GDP. This cell has
authentic GDP and plenty of GTP as well. What impact would this GDP
analog have on the phosphoinositide (IP3) and growth
factor pathways if it were bound to the g-proteins? Pick the best
available answer.
The g-proteins...
Why shift to digital television from analog? What are the
shortcomings of analog TV and what are some of the advantages of
digital? The specifications of digital television are set by the
ATSC. Who are they and how do they specify the transmission? Please
explain fully.
A digital signal has four levels. How many bits are needed per
level? Draw the digital signal assume the baud rate is 8 baud per
second.
Increasing the levels of a signal increases the probability of
an error occurring, in other words it reduces the reliability of
the system. Why and how can this be resolve?
What determines how successful a receiver will be in
interpreting an incoming signal?
Spectrum of a channel between 5 MHz and 4 MHz; SNRdB...