Lets add an echo to the signal with a delay of to = 0.12 seconds and an amplitude of α = 0.8. what is the delay n in samples? based on the difference equation, create an echo version of the signal x using the command y = conv(h, x); . what is h? listen to the output of the difference equation. do you hear the echo? 5. remove the echo. the difference equation above for modeling the echo is an lti system. to remove the echo, we need to implement the inverse system. whaterse system? what is the duration of this impulse response? 6. for the echo parameters you used above, plot the impulse response of the inverse system. make the horizontal axis in your plot in units of seconds. 7. implement the inverse of the echo system to perform

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!

- both graphs increase on their domain.

- the graphs of both functions have the same x-intercept.

- neither graph has a y-intercept.

step-by-step explanation:

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