similar to: PLC Question & OPUS Migration?

Hi,I have been trying some different sample rate and bitrate combinations to get a feel for how CELT behaves,too, like Andrew Lentvorski. But I want to use VBR option.I want to ask a question about VBR in CELT codec.Can we use VBR option in CELT ??? "byte_per_packet" variable in code means constant bit rate, does not it ?In this code : bytes_per_packet is constant.len =

Hello everyone, I just wanted to see if anyone else is using PLC on the C55x and having success? I am seeing some issues and was curious if I was doing anything wrong/stupid or maybe I have found a bug? I am using: - the CELT library from OPUS 0.9.5 ( I checked the git repo and no check ins have comments about PLC, I assume it hasn't been updated) - FRAME_SIZE: 240 - PACKET_SIZE:

# make make all-recursive make[1]: Entering directory `/tmp/celt-0.7.0' Making all in libcelt make[2]: Entering directory `/tmp/celt-0.7.0/libcelt' /bin/sh ../libtool --tag=CC --mode=compile gcc -std=gnu99 -DHAVE_CONFIG_H -I. -I.. -s -O3 -march=i686 -fvisibility=hidden -W -Wstrict-prototypes -Wall -Wextra -Wcast-align -Wnested-externs -Wshadow -Wno-parentheses

We were trying to normalize bands that didn't actually exist (e.g., the last band with 320-sample frames at 32kHz). Thanks to John Ridges for the report. --- libcelt/celt.c | 24 +++++++++++++++++------- 1 files changed, 17 insertions(+), 7 deletions(-) diff --git a/libcelt/celt.c b/libcelt/celt.c index 31d35f8..287c720 100644 --- a/libcelt/celt.c +++ b/libcelt/celt.c @@ -1137,6 +1137,7

From: Thorvald Natvig <slicer at users.sourceforge.net> --- celt.pc.in | 2 +- configure.ac | 2 ++ libcelt/Makefile.am | 12 ++++++------ tests/Makefile.am | 2 +- tools/Makefile.am | 4 ++-- 5 files changed, 12 insertions(+), 10 deletions(-) diff --git a/celt.pc.in b/celt.pc.in index 98cc008..67a830b 100644 --- a/celt.pc.in +++ b/celt.pc.in @@ -10,5

Hi I am trying to evaluate the quality of the CELT codec by using the 0.8.0 testcelt tool to encode and decode the input. I want to test different bitrates and selected the below parameters for 64, 96, 128, 196, 256kB: ./celt-0.8.0/libcelt/testcelt.exe 44100 2 256 46 $1.sw $1-64kb.sw ./celt-0.8.0/libcelt/testcelt.exe 44100 2 192 46 $1.sw $1-96kb.sw ./celt-0.8.0/libcelt/testcelt.exe 44100 2 128

Hi, I am a newbe here, so I hope I am not asking something crazy. I was looking on the Celt downloads and I noticed that the latest command line builds were for version 0.6. I know it is still early in development, and that the devs probably don't have time for developing CL versions for everything. since I know nothing about sourcecode and whatnot, I was wondering if there was a fairly simple

Hello, I am interested in using the CELT codec for an embedded project around the DSP C55x family from TI. Is this someone has already done? Which is necessary to do that, which compiler, is there a specific configuration ? Is it necessary to have an Operating system to run the CELT codec ? Is it possible to instantiate several times the CELT codec ? Thank you in

I am working on a project that transports audio in realtime from a linux box to a windows box throuh libcelt. The windows client program is written in C# and C++ and I therefore need the celt library in its most recent version (0.7) to be able to compile in Visual Studio 2008. In order to do this I, as I understand it, need a .vcproj file for the project. Are there any plans on making such a

I'd like to add support for CELT in a C# application. To do so, I'd like to build CELT as a static library using VS which I would then wrap with C++/CLI so I can access the encode/decode funtionality from within C#. Is it possible to compile CELT using Visual Studio? The first issue I ran into was that VS doesn't support the 'restrict' keyword. It does have __restrict which

Hello all Firstly thanks to everyone involved for creating CELT. It is really very useful :-) One of my targets is current generation Apple iPod with the fixed point decoder (latest version from website, 0.9.1) Based on my simple time-stamp based profiling of my running app it looks like decoding a null buffer for PLC costs a lot more than decoding a normal buffer. For example a standard

I am specifically using Celt Wideband (48kHz) over WiFi multicast that naturally leads to lost packets and am trying to minimize the impact to the audio. I implemented PLC but the audio it produces is robotic. Have I implemented PLC correctly? Checking the waveform it is using the previous received waveform to fill in a missing packet but not the full waveform so it has to repeat. Basically,

Hi, I am an applications engineer for Texas Instruments in the UK. I am trying to port the CELT codec to the C5505, this has HW accelerated FFT engine (http://focus.ti.com/docs/prod/folders/print/tms320vc5505.html). I am having problems with the stack allocation. Do you have any reference code that compiles for the C55x under CCS (code composer studio)? *******************************

Hello everyone, I'm evaluating the Celt in terms of robustness against bit errors. So what I have done is encoding a wav file using the \tools\celtenc.exe and then manipulated the wav file according a desired bit error rate or burst error length. But the Celt decoder stops decoding with the first bit I manipulated even if this bit is not in the header. So is there a way to do the test

HiI'm trying to run CELT on Win32 but I'm running into some corrupted stack errors when using alloca(). When get_required_bits32() (in file cwrs.c:308) is called from get_required_bits() (in file cwrs.c:328) the 'K' parameter is 1 which means that the uint32 which is allocated on the stack only has 3 bytes instead of 4. This results in a corrupted stack in the following call to

Hi, compiling the latest release 0.5.1 (as well as from git) with gcc-4.2.4 on zenwalk (slackware current), ectest fails; using gcc-3.4.6 all tests succeeds. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/opus/attachments/20081220/68be24c8/attachment-0002.htm

Hi guys, I am on a C55x stereo implementation of CELT 0.7.1; I am using 100 sample frame size and writing 58 Bytes per Packet. At the output of the decoder I see one channel reconstructed perfectly, but the other channel has random corruption that appears to be a sinusoid with a period of the frame size. The artifact is non-periodic and appears to happen randomly during the audio stream. Anyone

Hi all I have spent the last three days evaluating CELT on our supported platforms. I found a bug in quant_bands.c, that due to processor/compilation differences did not cause an issue on x86 platforms, but is a problem on the MIPS processor embedded devices. When decoding on the MIPS devices, there was a lot of noise added during the decoding, the noise is mainly in the 15 khz to 21 khz range.

Tony, How is this going? Have you been able to get CELT to run on a TI55xx? I am very interested in the % utilization of the hardware and whether multiple instance of CELT on the same DSP are feasible. I look forward to your findings. MikeH -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hi, I'm new here so an introduction. I'm Stefan de Konink, I have a diverse past, present and future in coding, content creation and a background in speech research. As introduced on #celt I want to do some promotion for the codec. I was positively surprised by the availability of something 'almost done' and totally usable in the form of celtclient.c, attached is a tiny