Displaying 20 results from an estimated 1500 matches similar to: "dynamics, clipping, 0 dBFS"
2010 Feb 01
1
Fwd: Re: Fixed Point on wideband-mode: Single Frame loss on 2000 Hz sine causes "freak off"
Hi Jean-Marc,
dBFS means dB relative to digital full scale. In other words: a sine value of -42 dBFS will, on a 16 bit PCM signal, swing between 131 and -131 only (16384 * 10^(-42/20))
So we are far below +/-8000.
At the moment, I'm out of ideas how to debug systematically. That even very small rounding errors alter pitch values fundamentally makes the situation worse for me, because it
2010 Feb 01
1
Fwd: Re: Fixed Point on wideband-mode: Single Frame loss on 2000 Hz sine causes "freak off"
Hi Jean-Marc,
my answers: see below. Any good ideas how I should proceed?
Jean-Marc Valin <jean-marc.valin at usherbrooke.ca> hat am 1. Februar 2010 um 13:09 geschrieben:
> Hi Frank,
>
> On 2010-02-01 05:56, Frank Lorenz wrote:
> > I get really strange results when comparing floating and fixed point
> > versions of interal variables of the ltp, so either something is
2003 Jun 09
2
ESRI shapefiles and EMME/2 packages
I just uploaded two packages to CRAN.
shapefiles_0.1.tar.gz - functions to read and write ESRI shapefiles
(including dbfs)
emme2_0.1.tar.gz - functions to read binary data from an EMME/2 databank
data (EMME/2 is a transportation modeling program)
Please let me know if you find any bugs or have some suggestions. Thanks.
Regards,
Benjamin Stabler
Transportation Planning Analysis Unit
Oregon
2009 Jul 16
1
Too many open files
Hello,
I'm having a problem in R. I'm getting an error message that reads, "Too
many open files". I'm opening files and closing them (and unlinking
them), but when I go through that process 509 times, the program halts
and I get this error message: "cannot open the connection" with warning
messages: "Too many open files". I've been working on
2008 Oct 03
8
Flash Vorbis player
Hi,
I wanted to let you know that I have just made available the sources
to the ogg + vorbis implementation in haXe, which I've been working on
for last couple of weeks. The code compiles to an swf file playable in
Flash Player 10.
A demo of a simple player implementation (latest Flash 10 required):
http://people.xiph.org/~arek/pg/hx/test.html
and the sources, in a bzr branch, currently
2008 Oct 03
8
Flash Vorbis player
Hi,
I wanted to let you know that I have just made available the sources
to the ogg + vorbis implementation in haXe, which I've been working on
for last couple of weeks. The code compiles to an swf file playable in
Flash Player 10.
A demo of a simple player implementation (latest Flash 10 required):
http://people.xiph.org/~arek/pg/hx/test.html
and the sources, in a bzr branch, currently
2010 Jan 13
2
Fwd: Re: Fixed Point on wideband-mode: Single Frame loss on 2000 Hz sine causes "freak off"
<body bgcolor="#ffffff" background="https://img.web.de/v/p.gif" class="bgRepeatYes" style="background-repeat: repeat; background-color: rgb(255, 255, 255); color: rgb(0, 0, 0); font-size: 9pt; padding-left: 0px;" ><span style="font-size: 9pt;"><span style="font-family: verdana,geneva;"><span
2005 May 12
1
MULTI-USER databases
hi all
Subject:
1) Samba server 3.0.15 with one shared sesource
Security is set to SHARE, all guest users have full read/write access to the
share
2) Microsoft network clients is Windows 98, Windows 2000 and Windows XP (sp2)
3) Old-age DOS program, written on Clipper (xBase), what runs on Windows 98
and on Windows XP/2k (ntvdm)
4) Large multi-user database (dbf files) on samba server
2010 Jan 13
1
Fwd: Re: Fixed Point on wideband-mode: Single Frame loss on 2000 Hz sine causes "freak off"
<body bgcolor="#ffffff" background="https://img.web.de/v/p.gif" class="bgRepeatYes" style="background-repeat: repeat; background-color: rgb(255, 255, 255); color: rgb(0, 0, 0); font-size: 9pt; padding-left: 0px;" ><p>Hi Jean-Marc,</p>
<p> </p>
<p>yes, I tested with floating point. It is only a fixed point
2010 Jan 14
2
Fwd: Re: Fixed Point on wideband-mode: Single Frame loss on 2000 Hz sine causes "freak off"
Hi Jean-Marc,
yes, problem exists in narrowband-mode, too.
I already twiddled with max_gain, but did not have real success. I changed line 337 of ltp.c (function pitch_gain_search_3tap_vq)
if (sum>best_sum && gain_sum<=max_gain) {
to
if (sum>best_sum && gain_sum<max_gain) {
-- that stabilizes speex for 2000 Hz and 2200 Hz input on quality setting 7 (23800
2010 Dec 02
2
24 bit question
Nicholas is probably right about noise. Another factor would simply
be the amplitude of the resulting file.
A 275 MB 24-bit file which compresses to 110 MB is probably not very
loud. I assume that the average level is somewhat low, with few if
any peaks that reach 0 dBFS. FLAC is very good at compressing audio
that is not loud. In fact, the quieter the recording, the smaller
the
2009 Dec 18
0
Fixed Point on wideband-mode: Single Frame loss on 2000 Hz sine causes "freak off"
Hi,
I'm quite sure we found a bug inside the codec (1.2rc1, wideband mode). It only
occurs when speex is compiled with the FIXED_POINT flag.
I feed in a 2000 Hz sine wave (-15 dBFS). When I simulate a single frame loss
(i.e. pass a null pointer to speex_decode_int as second parameter for just one frame), the decoder
starts to freak out a second later: It produces horrible noise with 0 dBFS.
2009 Dec 21
0
Fwd: Fixed Point on wideband-mode: Single Frame loss on 2000 Hz sine causes "freak off"
An update:
I found that the "ADD32: output is not int:" messages are caused by the enhancer. When I turn the enhancer off, the messages vanish, but the "freak out" of the codec is still there - so the problem seems not to be related to the overflow messages.
best regards,
Frank
---------- Urspr?ngliche Nachricht ----------
Von: Frank Lorenz <Frank_wtal at web.de>
An:
2009 Jul 10
0
Too many files open (PR#13818)
Full_Name: Richard Short
Version: 2.9.1
OS: Windows XP
Submission from: (NULL) (98.225.76.171)
I'm having a problem in R that may be an operating system problem. I'm getting
an error message that reads, "Too many files open". I'm opening files and
closing them (and unlinking them), but when I go through that process 509 times,
the program bombs and I get this error message.
2010 Jan 04
0
Fixed Point on wideband-mode: Single Frame loss on 2000 Hz sine causes "freak off"
Hi Jean-Marc, all,
I didn't get any response to my issue up to now and would like to now if anyone can reproduce this behaviour and if there is some idea what happens. I am willing to fix this issue, but because I do not know the internals of speex, I need some advice on how to proceed...
best regards,
Frank
Frank Lorenz <Frank_wtal at web.de> hat am 21. Dezember 2009 um 10:49
2002 Jul 05
1
radiomatic
Streaming and On-Air Performance for everyone.
2.7.2002 - 6.7.2002, daily 8:00pm - 0:00am
Weimar, Germany, On Air: 106,6 Mhz
http://www.radiostudio.org/streaps
contact: streaps@radiostudio.org
Everybody is welcome to connect with our new online mixing tool STREAPS
<p>RadioMatic is a on-line coop-system initiated by Jerome Joy and Ralf
Homann
between two art schools: Villa Arson in Nice
2010 Jan 13
0
Fwd: Re: Fixed Point on wideband-mode: Single Frame loss on 2000 Hz sine causes "freak off"
Hi Frank,
Sorry, I *do* care about the problem and just happen to be overworked at
the moment. What I suspect is that the pitch gain gets close enough to
unity that the loss makes it bust. Did you test with the floating-point
code?
Jean-Marc
On 2010-01-13 03:45, Frank Lorenz wrote:
> Hi,
>
> is no one willing to spent some effort on this topic? At least it would
> be good
>
2008 Sep 26
1
Ambisonia proposal
> Also, there has been some recent work on channel mappings for OggPCM (uncompressed PCM data in an Ogg container), which may be related:
Our proposal involves only Vorbis. Uncompressed PCM Ambisonics is already well catered for.
> It is indeed related. We are proposing a different ambisonic channel scheme (not speaker mapping though) called N3D (different to the usual FuMa scheme). The
2010 Jan 14
0
Fwd: Re: Fixed Point on wideband-mode: Single Frame loss on 2000 Hz sine causes "freak off"
What happens if you change that line:
if (cumul_gain > 262144)
to use a smaller value? What value works OK (if any)?
One more thing, when things go wrong, do they eventually go back to
normal or does the codec never recover? It's unavoidable that the audio
goes bad for a short period of time because of the long-term predictor.
Jean-Marc
On 2010-01-14 05:57, Frank Lorenz wrote:
>
2003 Feb 13
5
ESRI shape file import and time-space models
Dear R user,
I am running R under Windows 2000.
I am looking for a routine for importing
- shape files (ESRI) into R
- dbase files (FOXPRO) into R
and I am looking for time-space models for description and prediction of
Bernoulli-, Binomial- and Poissonvaraibles.
Thank's a lot for a reply.
Sincerely yours,
Ekkehardt Altpeter
Swiss Federal Office of Public