similar to: Error resilience

Hi, My name is Riccardo Micci i downloaded the CELT source code and I compiled it under Windows. This is meant to be a preliminary study for my company's project. When i run CELT it encodes and decodes the file back saying "Encoder matches decoder!!". When i try to play the output though the result is just noise and clicks. The only changes I've applied are some #defines to

Hi, We're using Celt 0.7.1 at the moment. We're thinking to update the code to a newer version of it. Is there an appreciable complexity (decoding time) difference among versions (0.7.1 - 0.8.1 - 0.9.1 - 0.10 - 0.11.1)? If so, which one is the fastest? Thanks Regards Riccardo Riccardo Micci Senior DSP Engineer, Wireless Group Cambridge Consultants Science Park, Milton Road

Hi, In order to fit the decoder in memory in our embedded architecture we set the MAX_PERIOD #define equal to the frame size. This doesn't affect the code bit accuracy in normal decoding. The #define it's used celt_decode_lost function though. Is it possible to get celt_decode_lost to work with a value different from the default? Thanks Riccardo Riccardo Micci Senior DSP Engineer,

Hi, I'm using Celt version 0.7.1 in low complexity mode (i.e. no pitch information). In case a packet is lost i was planning to use the celt_decode_lost function. I realised though it uses pitch information inside. Does the celt_decode_lost function still works with no pitch information? Are there some changes to be done? Thanks Regards Riccardo Riccardo Micci Senior DSP Engineer,

Hi, I'm testing CELT 0.7.1 speed performance and I'm focusing now on the complexity switch. I've dug in the archive and i found some information. Is it still true that there are two ranges? - 0-2 low complexity mode - 3-10 high complexity mode If no input is given is 2 hence low complexity mode the default setting? Does the complexity mode affect decoding as well? Thank you Best

Hi, Our DSP has a built-in bitrev instruction so we're exploring the possibility of calculating the bitrev every time instead of filling the table during initialisation, hence saving some memory. Our frame size is fixed to 320 samples. The two FFTs sizes for normal block and short block are 160 and 40 respectively. It's not really clear how the function

Hi, I was checking complexity modes of CELT 07.1 encoder. If i got it correctly everything is driven by pitch_available variable set in celt_encoder_create function. By default it's set to 1 hence high complexity mode is used all the time. I tried to disable it and although i couldn't hear any particular difference in the decoded audio quality, the cycle count of the encoder dropped

Hi, I've recently successful built and run CELT under Windows using "testcelt.c" example file. Since I'm about to port it on a embedded platform i activated the FIXED_POINT #define. I included fixed_generic.h and without other changes to the code i tried to encode and decode the same file i previously used. The output though is completely saturated i.e. it jumps from -32768 to

Hello, I'm porting CELT 0.7.1 to an embedded platform and unfortunately (at least for me) CHAR is defined as 16 bits. I now got the vocoder compiling but when i compare the encoded output with a windows build, they don't match. Among the other problems i think that the char definition is one of the biggest players. I've seen in arch.h the following definitions: /* 2 on TI C5x DSP */

Hi, I'm using Celt 0.7.1 in fixed math mode. In the celt_encode function, if the variable has_pitch is true, the function pitch_search is called. Within this function the find_best_pitch subfunction is called. Here the variable "float score;" is defined. Is this right? I was expecting not to see any float declaration in the fixed math code. Is it possible to redefine it as

eds to drag in the source and header files from the libcelt directory into = the project and define HAVE_CONFIG_H is the project's pre-processor definit= ion. The tricky part is to build a config.h file. To get it to work on VS some = of the important settings include. =20 #define CELT_BUILD #define USE_ALLOCA #undef VAR_ARRAYS #undef restrict #undef HAVE_STDINT_H #undef inline #define

Hi, Fiddling with Celt i found a possible bug. I'm using CELT 0.7.1, frame size 256, sample rate 32k and bitrate 64k. Here is the scenario: decoding side, celt_decode function. The "dec" structure is created at each function call and it's initialized with ec_dec_init function. The attribute "end_byte" is not initialized though. Decoding a file the behaviour is the

Hi, Does Celt (in particular version 0.7.1) exploits correlation between the two channels in stereo mode? In practice, is it possible to use the two channels as two mono signals without affecting quality? Thanks Best Regards Riccardo Riccardo Micci Senior DSP Engineer, Wireless Group Cambridge Consultants Science Park, Milton Road Cambridge, CB4 0DW, England Switchboard: +44 (0)1223

Hi, I checked the ODG (Objective Difference Grade) scores for a few reference vectors using the PQEvalAudio Tool and found that some of them show ODG scores as high as -3.5 If we look at the range as described in the link below, it looks unacceptable. http://www-mmsp.ece.mcgill.ca/documents/Software/Packages/AFsp/PQevalAudio.html Am I missing something or are these scores valid? Thanks and

Hi Rhishi, PQevalaudio is very unreliable and buggy. I have compared to PEAQ and - as a result - now I am not using it anymore. With best regards, Christian Hoene Von: opus-bounces at xiph.org [mailto:opus-bounces at xiph.org] Im Auftrag von Rhishikesh Agashe Gesendet: Freitag, 4. Oktober 2013 12:35 An: opus at xiph.org Cc: Rasmi Mishra Betreff: [opus] ODG (Objective Difference

Hi All, I'm looking to package up celt for inclusion in Fedora as the next stable release of ekiga/opal will have support for it. I've run into two issues in compiling it into a rpm. The first is a show stopper, then second one not so much of an issue but thought I'd report it for reference. The first issue is due to the celtdec and celtenc explicitly define rpath. I get the

Guys, I am getting lock error box in Officer 2007 and windows 7. It shows the somebody is using this file, but I am sure that is not. That problem always happens when open 2 files in the same folder. Take a look my lock configuration: kernel oplocks = No kernel oplocks = False locking = Yes oplocks = No level2 oplocks = No oplocks = False

A small issue, but missing. Something like this would be helpful: - printf ("celtenc (CELT encoder)\n"); + printf ("celtenc (CELT %s encoder)\n", CELT_VERSION); til

Is it all right to discuss CELT here? I haven't seen any specific mailing list for it yet. I would like to ask if someone could provide me one or two sample Ogg CELT files, so I could test detection in ogginfo. I know CELT content isn't really supposed to be around as files since it would lose all the format's latency advantages, but I assume people can create them if need be. -Ivo

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