Re: Voice Activated Recording
Re: Voice Activated Recording
- Subject: Re: Voice Activated Recording
- From: Alex Kac <email@hidden>
- Date: Fri, 29 May 2009 22:13:02 -0500
Don't have it in front of me - but I think I just looked at the
current level and waited for it to hit a certain level. I kept the
recording going, but based on the level I wrote the buffer or not.
More complicated than that a bit, but not much.
On May 29, 2009, at 5:27 PM, Bob Ingraham wrote:
Thanks! That's great news!
One question:
What part of the API did you use to implement the actual voice-
detection?
Thanks,
Bob
----- Original Message -----
From: "Alex Kac" <email@hidden>
To: "William Stewart" <email@hidden>
Cc: "Bob Ingraham" <email@hidden>, "Apple CoreAudio-API" <email@hidden
>
Sent: Friday, May 29, 2009 4:03:47 PM GMT -07:00 US/Canada Mountain
Subject: Re: Voice Activated Recording
yes. we did it easily with audioqueue.
On May 29, 2009, at 4:21 PM, William Stewart wrote:
AUHAL could be used for this.
Even easier though, I think you should just be able to use and
AudioQueue
On May 29, 2009, at 1:39 PM, Bob Ingraham wrote:
Hi All,
I'm trying to put together a CoreAudio app that would start
recording from an input, triggered by speech (kind of like those
voice-activated tape recorders.)
The order of ops would be:
1. Open an audio input for recording to a file.
2. Do nothing while detecting silence.
3. Upon detecting non-silence, start recording to said file.
4. Stop recording after x seconds of silence.
Is it possible to construct a CoreAudio app with the standard-issue
AU's shipped with MacOS 10.5.x?
Or do I have to make a custom AU to do this?
Any pointers on where to start or how to go about this would be
much appreciated!
Thanks,
Bob Ingraham
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