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Improving perceived loudness when system is constrained
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<blockquote data-quote="John Roberts" data-source="post: 99100" data-attributes="member: 126"><p>Re: Improving perceived loudness when system is constrained</p><p></p><p></p><p>I'm tempted to answer all of them, (except ones that actually generate lower freqs, IIRC there was a guitar pedal that also generated lower frequency undertones). The vast majority use psycho-acoustic tricks where they generate higher overtones and the brain fills in the missing LF notes that the small speakers can't possibly reporduce. </p><p></p><p>But this is just a bass thing and not your solution. </p><p></p><p>If your neighbors are speaking to you, ask them record the noise that is bothering them with their IPhone or some convenient capture device. This doesn't need to be super accurate or high fidelity, it will give you a sense of what the problem sound frequency(s) are. </p><p></p><p>If it's not much of a bandpass you might get away with some selective cuts... </p><p></p><p>+==========</p><p>An exotic idea I have run up the flagpole before, and hoped a smarter (than me) speaker guy would salute, is to array some speakers so that they cancel in the far field but not in the near field.. This may be harder to do than to propose, since nobody saluted last time I mentioned it. It seems two speakers playing opposite polarity would cancel on a vector equidistant from each other, while cancellation would be incomplete elsewhere... or not... caution this is purely hypothetical and will depend hugely on speaker radiation patterns. So once again frequency range matters. </p><p></p><p>First step is to ID specific frequency range and whatever data you can about the sounds causing the complaints. </p><p></p><p>JR</p></blockquote><p></p>
[QUOTE="John Roberts, post: 99100, member: 126"] Re: Improving perceived loudness when system is constrained I'm tempted to answer all of them, (except ones that actually generate lower freqs, IIRC there was a guitar pedal that also generated lower frequency undertones). The vast majority use psycho-acoustic tricks where they generate higher overtones and the brain fills in the missing LF notes that the small speakers can't possibly reporduce. But this is just a bass thing and not your solution. If your neighbors are speaking to you, ask them record the noise that is bothering them with their IPhone or some convenient capture device. This doesn't need to be super accurate or high fidelity, it will give you a sense of what the problem sound frequency(s) are. If it's not much of a bandpass you might get away with some selective cuts... +========== An exotic idea I have run up the flagpole before, and hoped a smarter (than me) speaker guy would salute, is to array some speakers so that they cancel in the far field but not in the near field.. This may be harder to do than to propose, since nobody saluted last time I mentioned it. It seems two speakers playing opposite polarity would cancel on a vector equidistant from each other, while cancellation would be incomplete elsewhere... or not... caution this is purely hypothetical and will depend hugely on speaker radiation patterns. So once again frequency range matters. First step is to ID specific frequency range and whatever data you can about the sounds causing the complaints. JR [/QUOTE]
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