From: Steve deRosier <derosier@pianodisc.com>
To: "IDOIT .IEF" <idoit.ief@gmail.com>
Cc: Alsa-devel@lists.sourceforge.net
Subject: Re: auto capture feature according to sound amplitude?
Date: Wed, 20 Apr 2005 10:11:15 -0700 [thread overview]
Message-ID: <42668D33.1050403@pianodisc.com> (raw)
In-Reply-To: <d8c9df6c050415095914e35449@mail.gmail.com>
Your best bet would be to continually capture from alsa, and analyse the samples as they come in. You could set an amplitude threshold or do some other fancier trigger point (must be between certain frequencies with a certian amplitude, etc...) and just bit-bin the samples to that trigger. At the trigger, you could then analyse it with your recognition algoritim, and when it's done go back to your wait-on-trigger state.
- Steve
IDOIT .IEF wrote:
> Hi All
> I'm working on a small voice recognition project and i want a library
> or some APIs automates capturing process so it'll start capturing only
> if there is a voice and it'll stay waiting unless
> I'm new to Alsa .. or you can say i'm new to audio programming .. i
> don't know if ALSA has such a feature .. or any other library
> i thought about implementing this feature by my self .. but i don't
> think i have time to do it
> Thanks in Advance
> IDOIT
>
>
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next prev parent reply other threads:[~2005-04-20 17:11 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-15 16:59 auto capture feature according to sound amplitude? IDOIT .IEF
2005-04-20 17:11 ` Steve deRosier [this message]
-- strict thread matches above, loose matches on Subject: below --
2005-04-16 4:44 Perfect Stranger
2005-04-19 9:52 ` Takashi Iwai
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