1.
2.
3.
4.
1. 1,2 and 3
2. 1 and 2
3. 2 and 3
4. 1 and 3
1,2 and 3
1. -2
2. -1
3. 1
4. 2
1
1. 4.060,0.97 dB
2. 5.70,3 dB
3. 4.90, 3 dB
4. 5.70, 0.97 dB
4.060,0.97 dB
1. 1, 2 and 3
2. 1 and 2
3. 2 and 3
4. 1 and 3
1 and 2
1.
2.
3.
4.
1.
2.
3.
4.
1.
2.
3.
4.
1. an impulse
2. a parabola
3. a ramp
4. a doublet
a parabola
1.
2.
3.
4.