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Message: <blockquote data-quote="John Roberts" data-source="post: 57114" data-attributes="member: 126">Re: So this almost never happens...Human audition is not a literal 1:1 mapping of complete sound characteristics into our meat computer, but a progression of extracting simpler macro impressions from the complex sound. Phase doesn't matter until it does. Mostly as Ivan says in interaction between and compared to similar sources (in crossovers), etc. A common mistake in design engineering is to extrapolate too much from such experiments. Linear and accurate is always better while most playback is full of compromises to both while focussing on parameters known to be more important to our meat computers. The interesting part is that the meat computer can learn to hear more subtle stuff within it's bandpass and dynamic range, so this is not a rock solid, stable target. Note: this is not meant to support all the claims from people that they hear stuff they probably don't. IMO 95% of what people hear is simple frequency response or spectral energy content of signals. When this is not controlled for, frequency response differences can be interpreted as all kinds of random phenomenon. So much of audio technology is about tricking the meat computer, and I have seen huge differences between individuals ability to hear subtle stuff, mostly connected with their training. A musician can focus in on some aspects of sound that they use for negative feedback while playing, a capability that normal listeners never developed. This doesn't necessarily make musicians more critical listeners, just more sensitive to some specific cues based on practice and experience. Human perception is only tracking a fraction of the input it receives. These musicians focus on a slightly different fraction of that whole. Since getting the whole perfect is pretty much impossible we mainly need to try to get the right fractions correct. .....or not.====Phase relationship between similar sources can create comb filtering which alters the spectral energy content... or frequency response. This not so simple frequency response can not be easily corrected with simple EQ JR</blockquote>

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