Search found 3 matches

by Zyme
Sun Feb 05, 2012 5:20 pm
Forum: Recording Techniques
Topic: Strange attenuation of different frequencies
Replies: 8
Views: 2515

Re: Strange attenuation of different frequencies

I presume that you are using a single loudspeaker? If you have two loudspeakers then there will be comb filter effects caused by the interaction of the two sound sources. To prevent measurement errors, I've made sure to send the mono signal only through one of the loudspeakers, [...] Yes, I'm using...
by Zyme
Sat Feb 04, 2012 8:21 pm
Forum: Recording Techniques
Topic: Strange attenuation of different frequencies
Replies: 8
Views: 2515

Re: Strange attenuation of different frequencies

First of all, thanks for the replies. ...I've seen that different loudspeakers (notebook or desktop) can influence the outcome, while switching the microphone hasn't yielded any changes in my experiments... Think about the possible implications of those "facts". Let me make the statements more simpl...
by Zyme
Sat Feb 04, 2012 3:52 pm
Forum: Recording Techniques
Topic: Strange attenuation of different frequencies
Replies: 8
Views: 2515

Strange attenuation of different frequencies

Hi all, I'm currently working on my master's thesis which involves sending and receiving sinusoids. For a test case, I've generated a sound consisting of the first 24 harmonics of a tone with fundamental frequency 440Hz. All harmonics have the same amplitude. The corresponding magnitude spectrum loo...