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White Noise Software For Linux

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  White Noise Software For Linux beforewisdom@gmail.com - 2014-09-19 16:41 -0700
    Re: White Noise Software For Linux William Unruh <unruh@invalid.ca> - 2014-09-20 06:39 +0000
      Re: White Noise Software For Linux The Natural Philosopher <tnp@invalid.invalid> - 2014-09-20 09:32 +0100
        Re: White Noise Software For Linux floyd@apaflo.com (Floyd L. Davidson) - 2014-09-20 02:44 -0800
          Re: White Noise Software For Linux The Natural Philosopher <tnp@invalid.invalid> - 2014-09-20 11:53 +0100
            Re: White Noise Software For Linux floyd@apaflo.com (Floyd L. Davidson) - 2014-09-20 04:25 -0800
              Re: White Noise Software For Linux Michael Black <et472@ncf.ca> - 2014-09-20 11:52 -0400
          Re: White Noise Software For Linux William Unruh <unruh@invalid.ca> - 2014-09-22 18:31 +0000
            Re: White Noise Software For Linux floyd@apaflo.com (Floyd L. Davidson) - 2014-09-22 18:59 -0800
              Re: White Noise Software For Linux Michael Black <et472@ncf.ca> - 2014-09-22 23:30 -0400
                Re: White Noise Software For Linux floyd@apaflo.com (Floyd L. Davidson) - 2014-09-23 02:51 -0800
                  Re: White Noise Software For Linux William Unruh <unruh@invalid.ca> - 2014-09-23 23:49 +0000
    Re: White Noise Software For Linux asdf <asdf@nospam.com> - 2014-09-21 09:55 +0000
      Re: White Noise Software For Linux Rich <rich@example.invalid> - 2014-09-21 12:41 +0000
        Re: White Noise Software For Linux JohnF <john@please.see.sig.for.email.com> - 2014-10-02 23:56 +0000
          Re: White Noise Software For Linux Rich <rich@example.invalid> - 2014-10-03 01:41 +0000
            Re: White Noise Software For Linux JohnF <john@please.see.sig.for.email.com> - 2014-10-03 02:13 +0000
              Re: White Noise Software For Linux Rich <rich@example.invalid> - 2014-10-03 02:55 +0000
                Re: White Noise Software For Linux JohnF <john@please.see.sig.for.email.com> - 2014-10-03 05:38 +0000
                  Re: White Noise Software For Linux JohnF <john@please.see.sig.for.email.com> - 2014-10-03 11:50 +0000
                    Re: White Noise Software For Linux Loki Harfagr <l0k1@thedarkdesign.free.fr.INVALID> - 2014-10-07 13:04 +0000
          Re: White Noise Software For Linux William Unruh <unruh@invalid.ca> - 2014-10-03 14:38 +0000
            Re: White Noise Software For Linux JohnF <john@please.see.sig.for.email.com> - 2014-10-08 03:18 +0000

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#12220

Fri, 03 Oct 2014 11:50:55 +0000, JohnF did cat :

> JohnF <john@please.see.sig.for.email.com> wrote:
>> <<snip>> After messing around a bit, what I ended up using was
>>   sox -q -c 1 -n white.wav synth noise band -n 900 1400
>>   lame white.wav white.mp3
> 
> After messing around a little more, I like
>     sox -q -c 1 -n white.wav synth noise band -n 24 800 echo .1 5 1 .99
> a little better. Not sure there actually is such a thing as
> better sounding white noise, but seems that way to me.


regarding your "^C Vs length" problem ;-)
in Sox to fix a length I'd use 'trim', e-g for a 1 min 12 secs of your exp:
$ sox -q -c 1 -n white.wav synth noise band -n 24 800 echo .1 5 1 .99 trim 0 01:12

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#12205

On 2014-10-02, JohnF <john@please.see.sig.for.email.com> wrote:
> Rich <rich@example.invalid> wrote:
>> beforewisdom@gmail.com wrote:
>> 
>>> Can anyone recommend any white noise software
>> 
>> sox has a large number of "noise" (both white and colored) options.
>> Here is one that someone posted somewhere on Usenet in the not too
>> distant past to generate brown noise:
>>   play -q -c 2 -n synth brownnoise band -n 1600 1500 tremolo .1 30
>
> Thanks, that works great. And I see from man sox (or man play)
> that output can be saved to a file. And I suppose it's got to be
> pretty obvious, but I'm not seeing (or getting it to work
> by messing around) exactly how to do that with your above example.
> That is, suppose I want to generate, say, a 1GB file containing
> the above, something functionally like the second line below...
>   play -q -c 2 -n synth brownnoise band -n 1600 1500 tremolo .1 30 \
>        --size 1GB --format mp3 -o brownnoise.mp3
> How would I correctly do that? Thanks again,

man sox. Look up the synth option. Note the len argument to synth.
Guessing what the syntax is is a fools game. You will never get it
right. 

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#12228

William Unruh <unruh@invalid.ca> wrote:
> JohnF <john@please.see.sig.for.email.com> wrote:
>> <<snip>> suppose I want to generate, say, a 1GB file containing
>> something functionally like the second line below...
>>   play -q -c 2 -n synth brownnoise band -n 1600 1500 tremolo .1 30 \
>>        --size 1GB --format mp3 -o brownnoise.mp3
>> How would I correctly do that? Thanks again,
> 
> man sox. Look up the synth option. Note the len argument to synth.
> Guessing what the syntax is is a fools game. You will never get it
> right. 

Thanks, William, len seems to be the most straightforward solution,
as far as I can tell. From line 2868 of the (Feb 1, 2013) sox man page
         len  is the length of audio to synthesise expressed as a
         time or as a number of samples; 0=inputlength, default=0.
Re "getting it right", yeah, sox's (Feb 1, 2013) man page
has 3264 lines on my box, many of which remain a bit cryptic to me.

And Loki Harfagr also followed-up...
> Loki Harfagr <l0k1@thedarkdesign.free.fr.invalid>
> regarding your "^C Vs length" problem ;-)
> in Sox to fix a length I'd use 'trim', e-g for a 1 min 12 secs of your exp:
> $ sox -q -c 1 -n white.wav synth noise band -n 24 800 echo .1 5 1 .99
>   trim 0 01:12

Thanks, Loki. That seems just about equally straightforward, i.e.,
from line 3024 of the (Feb 1, 2013) sox man page
         For example,
            sox infile outfile trim 0 10
         will copy the first ten seconds, while
-- 
John Forkosh  ( mailto:  j@f.com  where j=john and f=forkosh )

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