HOW to remove noise from recorded file

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Bhanu - 04 May 2006 11:27 GMT

I am using java.sound.sampled api to record and plyback soound but the
recording quality is not good. A continuous hiss sound is there.
plz help me finding out that

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jcsnippets.atspace.com - 04 May 2006 14:43 GMT

"Bhanu" <ratneshmaurya@gmail.com> wrote in news:1146738459.345106.114550
@y43g2000cwc.googlegroups.com:

> I am using java.sound.sampled api to record and plyback soound but the
> recording quality is not good. A continuous hiss sound is there.
> plz help me finding out that

First of all, try to record the sound with an existing sound recorder and
check if the hiss is still there.

The problem you're faced with is probably not Java but hardware related.

Best regards,

JayCee

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http://jcsnippets.atspace.com
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Bhanu - 05 May 2006 05:42 GMT

No problem is not with hardware

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Oliver Wong - 05 May 2006 17:03 GMT

>I am using java.sound.sampled api to record and plyback soound but the
> recording quality is not good. A continuous hiss sound is there.
> plz help me finding out that

There's no standard API call in Java that I know of which will do this
for you automatically. So your question becomes an algorithm question,
rather than a Java specific one. You could ask on the various generic
programming groups like comp.programming or comp.games.development.audio
(but check the FAQs first, to make sure that that last group isn't about how
to find and hire voice actors, for example, instead of programming
questions).

If you're comfortable reading C++, you can see the code Audacity uses
for noise removal at:
http://cvs.sourceforge.net/viewcvs.py/audacity/audacity-src/src/effects/NoiseRem
oval.cpp?rev=1.31&view=markup

- Oliver

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HOW to remove noise from recorded file

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