L-5 & L-6 Low Alt (June 30, 2011 through August 25, 2011)
Current Price
$7.57
Average
$5.97
Min Price
$2.89
Max Price
$8.51
Price dynamics
21%
Price will be lower
in next 2 weeks
in next 2 weeks
According to the data, price will be lower in next two weeks, so not waste your money and track better price!
Product review & video
We are losing our listening. We spend roughly 60 percent
of our communication time listening, but we're not very good at it. We retain just 25 percent of what we hear. Now -- not you, not this talk, but that is generally true. (Laughter) Let's define listening
as making meaning from sound. It's a mental process, and it's a process of extraction. We use some pretty cool
techniques to do this. One of them is pattern recognition. (Crowd noises) So in a cocktail
party like this, if I say, "David, Sara, pay attention" --
some of you just sat up. We recognize patterns
to distinguish noise from signal, and especially our name. Differencing is another technique we use. If I left this pink noise on
for more than a couple of minutes, (Pink noise) you would literally
cease to hear it. We listen to differences;
we discount sounds that remain the same. And then there is a whole
range of filters. The
