- #1
niteshadw
- 20
- 0
I have two simple questions but I'm not 100% on how to get the correct result.
1. "The noise is reduced by 6 dB" means its amplitude is cut to _%?
How is it calculated to 50%? I try 20log(Av)...
2. Does this wave contain 30k hertz sine function? (see attachment)
The answer is yes, but I try f=1/T, in this case T = 0.1 ms, so f is 10k, how is it 30k?
Thank you
1. "The noise is reduced by 6 dB" means its amplitude is cut to _%?
How is it calculated to 50%? I try 20log(Av)...
2. Does this wave contain 30k hertz sine function? (see attachment)
The answer is yes, but I try f=1/T, in this case T = 0.1 ms, so f is 10k, how is it 30k?
Thank you