4 ms·

Hey, this is my first blog post--I got motivated to write one because of all the cool stuff I find on HN. I wanted to write a single blog post on bass boost (a

Hey, this is my first blog post--I got motivated to write one because of all the cool stuff I find on HN. I wanted to write a single blog post on bass boost (as mentioned at the end), but I wanted some early feedback on my writing so I split the original blog idea into two. Obvious points for improvement are the code (playing more than N seconds, etc) and writing some CSS for it, but I'm looking for some readability issues in writing if there are any. Thanks for reading!

fhood 9y ago
Well, it was an awesome blog post. I have actually lost sleep pondering how itty bitty iems manage to have bass response. Thanks.
- aidenn0 9y ago
  IEMs can have pretty good bass response just because they don't need to generate much volume. Hold them about an inch from your ear and turn the volume up high enough to hear from that distance. Very little base at that point.
  - aoeusnth1 9y ago
    It's not just the low volume - it's the airtight seal. A very low frequency sound wave is a slow sequence of low- and high-pressures. With an airtight seal, it's much easier to sustain pressure differences from 1 atmosphere from a long time. With no seal, the high or low pressure leaks away from the region near the ear. This is also why open-ear headphones tend to have lower bass response than closed-ear headphones. For example, compare these frequency response curves: http://graphs.headphone.com/index.php?graphID%5B0%5D=853&graphID%5B1%5D=4323&graphID%5B2%5D=&graphID%5B3%5D=&scale=30&graphType=0&buttonSelection=Update+Graph http://graphs.headphone.com/index.php?graphID%5B0%5D=853&gra... The open-ear Sennheiser HD650 has around 10-12 db lower bass response than the closed-ear Fostex. Even more dramatic, look at the dynamic response to a 50hz square wave - the Sennheiser's amplitude drops completely to zero before the next jump of the square wave, while the Fostex manages to maintain about 1/3 of the original air pressure in the headphone cup by the end. http://graphs.headphone.com/index.php?graphID%5B0%5D=853&graphID%5B1%5D=4323&graphID%5B2%5D=&graphID%5B3%5D=&scale=30&graphType=3&buttonSelection=Update+Graph http://graphs.headphone.com/index.php?graphID%5B0%5D=853&gra...
the_cat_kittles 9y ago
id suggest you find an example where a familiar melody is played using only overtones. that really hammers home the idea that your brain fills in the fundamental.
creeble 9y ago
Nice! Might be helpful to label the harmonics in the sliders. Excellent post!

fhood 9y ago

Well, it was an awesome blog post. I have actually lost sleep pondering how itty bitty iems manage to have bass response. Thanks.

aidenn0 9y ago
IEMs can have pretty good bass response just because they don't need to generate much volume. Hold them about an inch from your ear and turn the volume up high enough to hear from that distance. Very little base at that point.
- aoeusnth1 9y ago
  It's not just the low volume - it's the airtight seal. A very low frequency sound wave is a slow sequence of low- and high-pressures. With an airtight seal, it's much easier to sustain pressure differences from 1 atmosphere from a long time. With no seal, the high or low pressure leaks away from the region near the ear. This is also why open-ear headphones tend to have lower bass response than closed-ear headphones. For example, compare these frequency response curves: http://graphs.headphone.com/index.php?graphID%5B0%5D=853&graphID%5B1%5D=4323&graphID%5B2%5D=&graphID%5B3%5D=&scale=30&graphType=0&buttonSelection=Update+Graph http://graphs.headphone.com/index.php?graphID%5B0%5D=853&gra... The open-ear Sennheiser HD650 has around 10-12 db lower bass response than the closed-ear Fostex. Even more dramatic, look at the dynamic response to a 50hz square wave - the Sennheiser's amplitude drops completely to zero before the next jump of the square wave, while the Fostex manages to maintain about 1/3 of the original air pressure in the headphone cup by the end. http://graphs.headphone.com/index.php?graphID%5B0%5D=853&graphID%5B1%5D=4323&graphID%5B2%5D=&graphID%5B3%5D=&scale=30&graphType=3&buttonSelection=Update+Graph http://graphs.headphone.com/index.php?graphID%5B0%5D=853&gra...

the_cat_kittles 9y ago

id suggest you find an example where a familiar melody is played using only overtones. that really hammers home the idea that your brain fills in the fundamental.

creeble 9y ago

Nice! Might be helpful to label the harmonics in the sliders. Excellent post!