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From: Krusty on 22 Apr 2010 05:41
Jim wrote:

> On 22/04/2010 10:24, Krusty wrote:
> > Jim wrote:
> >> On 22/04/2010 10:01, Krusty wrote:
> >> > I've got an MP3 which I want to change to around 22Khz, thus
> making >> > it inaudible to humans. Is such a thing possible without
> buying >> > fancy software? I've got GoldWave but can't figure out
> how to do it.
> > >
> >> Since most audio equipment available to you is going to use a
> >> sampling rate of 44.1 or 48kHz then surely this isn't going to
> work - >> you will just end up with noise.
> >
> > Seems to work fine. The hard bit was finding a playback device with
> > speakers that work in that range, but my trusty (very ancient)
> > Hitachi ghetto blaster came to the rescue.
>
> How do you know it works fine if you can't hear it?

Because I shifted it up a bit at a time. I've left it where I can still
hear it but not very clearly.

--
Krusty
From: Jim on 22 Apr 2010 05:49
On 22/04/2010 10:41, Krusty wrote:
> Jim wrote:
>> How do you know it works fine if you can't hear it?
>
> Because I shifted it up a bit at a time. I've left it where I can still
> hear it but not very clearly.

OK. Basically what I'm saying is that if you could hear it properly it
would sound muffled and distorted. Not that the dogs will mind.
From: CT on 22 Apr 2010 05:56
Jim wrote:

> OK. Basically what I'm saying is that if you could hear it properly
> it would sound muffled and distorted. Not that the dogs will mind.

If the MP3 is of some grunge metal, they'd not notice the difference.

--
Chris
From: Hog on 22 Apr 2010 06:24
Jim <nul(a)0.0.0.0> wrote:
> On 22/04/2010 10:24, Krusty wrote:
>> Jim wrote:
>>> On 22/04/2010 10:01, Krusty wrote:
>>> > I've got an MP3 which I want to change to around 22Khz, thus
>>> making > it inaudible to humans. Is such a thing possible without
>>> buying > fancy software? I've got GoldWave but can't figure out
>>> how to do it. Since most audio equipment available to you is going to
>>> use a
>>> sampling rate of 44.1 or 48kHz then surely this isn't going to
>>> work - you will just end up with noise.
>>
>> Seems to work fine. The hard bit was finding a playback device with
>> speakers that work in that range, but my trusty (very ancient)
>> Hitachi ghetto blaster came to the rescue.
>
> How do you know it works fine if you can't hear it?

The dog going mental should be a clue. Do let us know if this works, it's a
lovely idea.

--
Hog


From: Switters on 22 Apr 2010 08:40
On Thu, 22 Apr 2010 09:19:45 GMT, Krusty wrote:

>> What on earth are you doing?
>
> Trying to make the neighbour's dogs kick off every hour through the
> night without her knowing why. We'll see if she still thinks their
> barking isn't a problem after a week of no sleep.

Ummm, isn't this going to keep you awake too?
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