I think I had a breakthrough when I stopped trying to decode it into linear PCM and let it output a-law or u-law... If you zoom in in Audacity, it looks like audio now -- rational stops and starts, silences at zero with just a little noise, and almost no clipping anywhere. The quality is poor but I think I hear "emergency", and it might clean up with filtering.
I generated it like this, using the same program as before:
I don't think the "a-law" in your configuration structure matters here... ADPCM is neither a-law nor u-law, it replaces it. And it doesn't seem like your structure has the type correct anyway, since G.723 24kbps ADPCM is the only codec willing to touch this.
I hope this helps you. I think this is the best I can do at this point.
Last edited by Corona688; 07-30-2014 at 07:04 PM..
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Hi,
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Hi all!!
I´m using command file -i myfile.xml to validate XML file encoding, but it is just saying regular file . I´m expecting / looking an output as UTF8 or ANSI / ASCII
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Discussion started by: mrreds
2 Replies
LEARN ABOUT SUNOS
mlib_signallinear2ulaw
mlib_SignalLinear2uLaw(3MLIB) mediaLib Library Functions mlib_SignalLinear2uLaw(3MLIB)NAME
mlib_SignalLinear2uLaw - ITU G.711 m-law and A-law compression and decompression
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>
mlib_status mlib_SignalLinear2uLaw(mlib_u8 *ucode, const mlib_s16 *pcm, mlib_s32 n);
DESCRIPTION
The mlib_SignalLinear2uLaw() function performs ITU G.711 m-law and A-law compression and decompression in compliance with the ITU (Former
CCITT) G.711 specification.
PARAMETERS
The function takes the following arguments:
ucode m-law code array.
pcm Linear PCM sample array.
n Number of samples in the source array.
RETURN VALUES
The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
|MT-Level |MT-Safe |
+-----------------------------+-----------------------------+
SEE ALSO mlib_SignalALaw2Linear(3MLIB), mlib_SignalALaw2uLaw(3MLIB), mlib_SignalLinear2ALaw(3MLIB), mlib_SignaluLaw2ALaw(3MLIB), mlib_Signalu-
Law2Linear(3MLIB), attributes(5)SunOS 5.10 9 Nov 2004 mlib_SignalLinear2uLaw(3MLIB)