Explore BrainMass

Decibel strength of signal, Required signal levels

This content was STOLEN from BrainMass.com - View the original, and get the already-completed solution here!

1. A signal starts at point x. As it travels to point y it loses 8 db. At point y the signal is boosted by 10 db. As the signal travels to point z it loses 7 db. What is the db strength of the signal at point z?

2. What is the decibel loss of a signal that starts at point A with a strength of 2000 watts and ends at point B with a strength of 400 watts?

3. If a telephone line can carry a signal with a baud rate of 6000 and we want to transmit data at 33600 bps, how many different signal levels will be necessary? Is this how 33600 bps modem operates?

© BrainMass Inc. brainmass.com October 25, 2018, 4:21 am ad1c9bdddf

Solution Preview

1. Let us say that the decibel (db) strength of signal at point x is S. To compute the db strength of signal at point z, we can simply add the db losses and boost on the way.

So the db strength of signal at point z = db strength of signal at point x - db loss between points x and y + db signal boost at point y - db loss between points y and z
= S - 8 + 10 - 7
= S - 5

So, the db strength of signal at ...

Solution Summary

Baud signifies how many times a signal changes per second, however it does not restrict how many signal levels could possibly be there.

See Also This Related BrainMass Solution


Bone is dynamic and responds, similar to muscle, to stress placed upon it such that it may grow in thickness and in strength. I need another take on these articles and questions. Thank you.


Read both of the articles that are above this discussion. Based on what you read, what impact does weight training have on BMD? Is this sufficient alone or is it necessary to supplement with calcium and iron? What if a woman you are training doesn't want to do HRT, what would you recommend? Your text addresses the importance of building peak bone mass as a youth before age related decline, what activity would you recommend children do to achieve this? Be sure to back up what your saying with a reference.

Please read article about osteoporosis (see attachments)
#1 preventing osteoporosis...

#2 Structural basis of growth-related gain and age-related loss of bone strength

View Full Posting Details