conquistadore
Forum Moderator
Joined: 03 Aug 2004
Posts: 514
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| Fletcher-Munson Effect |
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What is the Fletcher-Munson effect?
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Fri Apr 01, 2005 11:46 pm |
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AUdIoCoUrSeS
Joined: 31 Oct 2002
Posts: 2014
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| Equal Loudness contours |
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The Fletcher Munson curves are otherwise known as the Equal Loudness contours as they are a graph of how the ear repsonds to different leveles of frequency across the audible range.
Basically subjects listened to tones of the same frequncies but at different levels and the results were mapped out.
The results are very interesting and essential for any engineer to understand, the main thing to understand is the fact that the ear's frequency response is NOT flat and in fact changes as the level of the sound changes.
This has implications for mixing levels because if the track is mixed in the studio at a high monitoring level then when played back at a low volume the bass and top end will seem to be lacking (due to the ears response at low levels).
It is important then to mix at low monitoring levels ensuring the bass and top is present, then when played back louder those areas will only seem to increase, which subjectively most people prefer.
Hope that helps.
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It's all in the ears. - Learn the concepts not the software.
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Last edited by AUdIoCoUrSeS on Sat Apr 02, 2005 10:04 am; edited 1 time in total |
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Sat Apr 02, 2005 9:52 am |
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conquistadore
Forum Moderator
Joined: 03 Aug 2004
Posts: 514
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| yeah it did |
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Thanks AUdIoCoUrSeS. That helped. |
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Sat Apr 02, 2005 10:00 am |
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conquistadore
Forum Moderator
Joined: 03 Aug 2004
Posts: 514
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| SPL? |
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What is SPL? And is it at 20 micro pascal?
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Sat Apr 02, 2005 10:11 am |
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AUdIoCoUrSeS
Joined: 31 Oct 2002
Posts: 2014
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| SPL |
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Sound Pressure Level, and yes 20 micro pascals which is the threshold of hearing for most of us.
So the graph is referenced to 0dB SPL= 20 micro pascals.
You have to reference dBs each time you use them otherwise they have no meaning.
_________________
It's all in the ears. - Learn the concepts not the software.
Audio Courses is a way into the music business for you
Last edited by AUdIoCoUrSeS on Sat Apr 02, 2005 2:48 pm; edited 1 time in total |
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Sat Apr 02, 2005 10:29 am |
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conquistadore
Forum Moderator
Joined: 03 Aug 2004
Posts: 514
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hmm...Yeah i understand now. Thanks! |
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Sat Apr 02, 2005 10:33 am |
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