Over 10dB noise reduction at 300MHz

[Winfield Hill]

Sony Noise-Canceling Headphones, with
"Over 10db noise reduction at 300MHz"
http://www.ecost.com/detail.aspx?EDP=19628703&Source=EWB112407EML

 

[Don Bowey]

Sony Noise-Canceling Headphones, with
"Over 10db noise reduction at 300MHz"
http://www.ecost.com/detail.aspx?EDP=19628703&Source=EWB112407EML

I can barely hear up to 96 MHz, so I limit my radio hearing to the low end
of the FM band :^)

 

[Jan Panteltje]

Sony Noise-Canceling Headphones, with
"Over 10db noise reduction at 300MHz"
http://www.ecost.com/detail.aspx?EDP=19628703&Source=EWB112407EML

 

[Fred Bloggs]

Sony Noise-Canceling Headphones, with
"Over 10db noise reduction at 300MHz"
http://www.ecost.com/detail.aspx?EDP=19628703&Source=EWB112407EML

Does mHz make more sense, or what is your point?

 

[Jure Newsgroups]

Sony Noise-Canceling Headphones, with
"Over 10db noise reduction at 300MHz"
http://www.ecost.com/detail.aspx?EDP=19628703&Source=EWB112407EML

I bet thay are using these Linear Technology parts available from Newark
( Grin ... )

http://www.newark.com/jsp/search/br...|1&Ntk=gensearch_001&Ntt=JFEDEUSSIGCH040&Ntx=


LT1112ACN8#PBF - LINEAR TECHNOLOGY - Operational Amplifier IC

--------------------------------------------------------------------------------

Image is for illustrative purposes only.
Please refer to product description
Manufacturer: LINEAR TECHNOLOGY

Newark Part Number: 57M1727

Manufacturer Part No: LT1112ACN8#PBF

RoHS Compliance : Yes

Description
a.. Operational Amplifier IC
b.. Number of Amplifiers:2
c.. Bandwidth Max:750GHz
d.. Slew Rate:0.3V/us
e.. Package/Case:8-PDIP
f.. Amplifier Type:Low Power Precision
g.. Leaded Process Compatible:Yes
h.. Offset Voltage:20V
i.. Operating Temp. Max:85 C RoHS Compliant: Yes

 

[ehsjr]

I can barely hear up to 96 MHz, so I limit my radio hearing to the low end
of the FM band :^)

The pharmaceutical outfits probably have a pill for that.
Of course, it would need to be used in conjunction with
oxygen-free, audio enhanced, gold plated, dynamicly balanced,
impedance matched monster cables.

Ed

 

[Bob]

Does mHz make more sense, or what is your point?

Oh dear.

No, three hundred millihertz would also be somewhat out of
the range of human hearing.

Bob

 

[Winfield]

Does mHz make more sense, or what is your point?

$20 for a pair of filters with only 10dB attenuation
at 300MHz? Good God man, you can get ferrite filters
that'll do far better than that for fifty cents each!

 

[Phil Hobbs]

$20 for a pair of filters with only 10dB attenuation
at 300MHz? Good God man, you can get ferrite filters
that'll do far better than that for fifty cents each!

Not to mention that tin foil hats will do far better, for much cheaper.

Cheers,

Phil Hobbs

 

[Jeff Liebermann]

Sony Noise-Canceling Headphones, with
"Over 10db noise reduction at 300MHz"
http://www.ecost.com/detail.aspx?EDP=19628703&Source=EWB112407EML

Nice. It probably cancels rock, grunge, techno, punk, rap, trance,
disco, talk radio, and perhaps even commercials. Only 10dB reduction
in these offensive noises isn't great, but it's a good start.

300MHz. So that's were the strange subliminal voices in my head are
coming from.

 

[JosephKK]

Winfield [email protected] posted to sci.electronics.design:

$20 for a pair of filters with only 10dB attenuation
at 300MHz? Good God man, you can get ferrite filters
that'll do far better than that for fifty cents each!

But you are not a platinum plated audiophool.