The module will provide analysis and examples of how a continuous-time signal is converted to a digital signal and processed.
Dt processing of ct signals
Analysis
where we know that
and
is the frequency response of the DT LTI system.
Also, remember that
So,
where
and
are CTFTs and
and
are DTFTs.
OR
Therefore our final output signal,
, will be:
Now, if
is bandlimited to
and we use the usual lowpass reconstruction filter in the
D/A,
:
Then,
Summary
For bandlimited signals sampled at or above the Nyquist
rate, we can relate the input and output of the DSP systemby:
where
Note
is LTI if and only if the following two
conditions are satisfied:
is LTI (in DT).
is bandlimited and sampling rate equal to or
greater than Nyquist. For example, if we had a simplepulse described by
where
. If the sampling period
,
then some samples might "miss" the pulse while othersmight not be "missed." This is what we term
time-varying behavior .
Unfortunately, in real-world situations electrodes also pick
up ambient 60 Hz signals from lights, computers,
etc. . In fact, usually this "60 Hz noise"
is much greater in amplitude than the EKG signal shown in
.
shows the EKG signal; it is barely noticeable
as it has become overwhelmed by noise.
Dsp solution
Sampling period/rate
First we must note that
is
bandlimited to60 Hz.
Therefore, the minimum rate should be 120 Hz. In order toget the best results we should set
.
Digital filter
Therefore, we want to design a digital filter that will
remove the 60Hz component and preserve the rest.
Communication is effective because it allows individuals to share ideas, thoughts, and information with others.
effective communication can lead to improved outcomes in various settings, including personal relationships, business environments, and educational settings. By communicating effectively, individuals can negotiate effectively, solve problems collaboratively, and work towards common goals.
it starts up serve and return practice/assessments.it helps find voice talking therapy also assessments through relaxed conversation.
miss
Every time someone flushes a toilet in the apartment building, the person begins to jumb back automatically after hearing the flush, before the water temperature changes. Identify the types of learning, if it is classical conditioning identify the NS, UCS, CS and CR. If it is operant conditioning, identify the type of consequence positive reinforcement, negative reinforcement or punishment
nature is an hereditary factor while nurture is an environmental factor which constitute an individual personality. so if an individual's parent has a deviant behavior and was also brought up in an deviant environment, observation of the behavior and the inborn trait we make the individual deviant.
Samuel
I am taking this course because I am hoping that I could somehow learn more about my chosen field of interest and due to the fact that being a PsyD really ignites my passion as an individual the more I hope to learn about developing and literally explore the complexity of my critical thinking skills
hello. autism is a umbrella term. autistic kids have different disorder overlapping. for example. a kid may show symptoms of ADHD and also learning disabilities.
before treatment please make sure the kid doesn't have physical disabilities like hearing..vision..speech problem. sometimes these
Jharna
continue..
sometimes due to these physical problems..the diagnosis may be misdiagnosed.
treatment for autism.
well it depends on the severity.
since autistic kids have problems in communicating and adopting to the environment.. it's best to expose the child in situations where the child
Jharna
child interact with other kids under doc supervision.
play therapy.
speech therapy.
Engaging in different activities that activate most parts of the brain.. like drawing..painting. matching color board game.
string and beads game.
the more you interact with the child the more effective
Jharna
results you'll get..
please consult a therapist to know what suits best on your child.
and last as a parent. I know sometimes it's overwhelming to guide a special kid.
but trust the process and be strong and patient as a parent.
Jharna
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