On 12/23/2009 11:29 AM, David Knell wrote:
On the other hand, a u-law WAV turned into L16 and then back to u-law to
be sent down the line shouldn't suffer any alteration at all - if it
does, the there's something wrong with the translation.
The quality dropping over time is almost certainly
VMD will force a transcode anyway too.
/b
On Dec 23, 2009, at 1:08 AM, Vinuth Madinur wrote:
My setup is as follows:
FreeSWITCH - SIP Trunk - PSTN.
From freeswitch, I'm making outbound calls using event socket via the
external profile. Except for the ext_rtp_ip and ext_sip_ip,
It's more than highly likely you have some other problem like jitter or a
bad network connection.
Not many people would be able to tell the difference between the sound of an
8k PCM file and the same file encoded to G711 just by listening to it unless
there was a severe problem somewhere. Since
Why? You don't have to avoid it... why bother?
/b
On Dec 22, 2009, at 4:28 PM, Vinuth Madinur wrote:
My basic intent is to avoid on-the-fly transcoding, while having a high
quality audio playing on PSTN.
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The audio quality is a lot different when it plays on the landline. And the
quality degrades a bit when the message played is lengthy 30s. So I thought
it would be better if I have the file in mu-law and play it as is..
Thanks,
Vinuth.
On Wed, Dec 23, 2009 at 4:09 AM, Brian West
If its degrading like that you have bigger issues... the sound files played
from wav files vs raw PCM files is NO different on a land line and I speak from
very many years of experience... your wav files are ulaw in wav containers thus
will never play native which might just be part of your
On the other hand, a u-law WAV turned into L16 and then back to u-law to
be sent down the line shouldn't suffer any alteration at all - if it
does, the there's something wrong with the translation.
The quality dropping over time is almost certainly down to something
else. Vinuth -can you get a
Have you considered GIPS http://www.gipscorp.com/products/overview.php ?
-E
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That being said, ulaw l16 alaw will cause degredation and any other
modifications such as volume adjustment in this path will make it
worse. Tha being said that does not sound like what you are
experiencing
Mike
On Dec 22, 2009, at 10:29 PM, David Knell d...@3c.co.uk wrote:
On the other
On Tue, 2009-12-22 at 23:52 -0500, Michael Jerris wrote:
That being said, ulaw l16 alaw will cause degredation and any other
modifications such as volume adjustment in this path will make it
worse.
Indeed. Storing prompts
as 8k, 16-bit WAVs
makes a lot of sense.
[I am inordinately
My setup is as follows:
FreeSWITCH - SIP Trunk - PSTN.
From freeswitch, I'm making outbound calls using event socket via the
external profile. Except for the ext_rtp_ip and ext_sip_ip, everything is
default settings. Using playback application, I'm playing a mu-law audio.
I'm also starting the
On Wed, Dec 23, 2009 at 12:17 PM, David Knell d...@3c.co.uk wrote:
On Tue, 2009-12-22 at 23:52 -0500, Michael Jerris wrote:
That being said, ulaw l16 alaw will cause degredation and any other
modifications such as volume adjustment in this path will make it
worse.
Indeed. Storing
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