Lecture 9 - 2. An omnidirectional microphone is placed on a...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
XX 8 XXX p. 10
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
XX 9 XXC p. 2
Background image of page 2
p. 3
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
EEL 4930 Audio Engineering Lecture 9 Homework #7 Due #10 1. 3:1 Rule: As a rule of thumb, when two microphones are used to pick up two sources, the distance between the mics should be at least three times the distance from each mic to its nearest source. (a) How big (in dB) are the peaks and nulls if the spacing is 3:1, assuming omnidirectional microphones and plane waves? (b) How could you use figure-8 or cardioid microphones to minimize comb filtering in this situation?
Background image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 2. An omnidirectional microphone is placed on a stand 1 meter away from a reflecting surface and 2 meters away from a sound source that is also 1 meter away from the surface. (a) What are the three lowest frequencies that will be partially cancelled due to comb filtering? (b) If the reflection coefficient of the surface is 0.80, how deep will the nulls be and how large will the peaks be (in dB)? (c) Repeat (b) if the microphone is a cardioid mike pointed at the sound source....
View Full Document

This note was uploaded on 02/08/2011 for the course EEL 4930 taught by Professor Staff during the Spring '08 term at University of Florida.

Page1 / 4

Lecture 9 - 2. An omnidirectional microphone is placed on a...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online