Okay, you’ve answered
part of my question, which is “What value equals silence?”. I assume then that
a (decoded) frame of silence would be a buffer the size of my frame (320
bytes) full of 0’s.
Passing this frame (a
frame of all 0’s) through the encoder causes it to blowup though..
In response to your
answer below, I don’t think I want to overwrite the decoded audio output since
I don’t want to lose any “voice”, I only want to interpolate silence into it.
So I would guess your response to this would be “Why don’t you just
interpolate a frame of 0’s in between frames of voice after it’s been
decoded?”… to which I reply, “that seems sort of hack-ish… I’m looking for a
more programmatic way of generating silence that the speex codec won’t choke
on.” Is there such a thing?
I don’t mean to have
a one-sided conversation, only to make the best use of the bandwidth of this
email.. Thank you for your help and I look forward to any
responses!
From: David
Hogan [mailto:david.hogan@xxxxxxxxxxxx]
Sent: Wednesday, February 14, 2007 2:37
PM
To: Chris Cowden;
speex-dev@xxxxxxxx
Subject:
RE: [Speex-dev] frame of silence
Forgive me if I
misunderstood your question, but can't you just overwrite the decoded audio
buffer (either before encoding or after decoding, depending on what you are
trying to do) with zeros?
Cheers,
David
Hogan
From:
speex-dev-bounces@xxxxxxxx [mailto:speex-dev-bounces@xxxxxxxx] On Behalf Of Chris Cowden
Sent: Thursday, 15 February 2007 3:43
AM
To:
speex-dev@xxxxxxxx
Subject:
[Speex-dev] frame of silence
Hi, I’m new to this list. I’m
using Speex as the base codec in a voice chat application (with DirectSound
as the audio playback/capture interface).
To help me debug some of my
network-related issues, I would really like to insert frames of “silence”
into speech. Is there a convenient function call or API call that takes in a
buffer that is the size of a frame and writes a frame of “silence” to
it?
I’m not sure if I’m wording the
question well, so any feedback would be greatly
appreciated!
Btw, I am really enjoying using
this codec and look forward to getting this working!
Thanks!
