search for: 8kbps

...number of bits in each frame and can do without the > Ogg > overhead. > > In the Ogg Format you have a segment table that shows the length of each > segment. When --nframes is set to the default of 1, one Speex frame equals > one > segment/packet. > > If you encode at 8kbps each segment is 0x15(21) bytes long, if you encode at > 15kbps each segment is 0x26(38) bytes long. You can easily see this if you > view > the Speex file with a Hex text editor as the segment table is the segment > size > repeated several times. > > In 15kbps mode you get 3...

...n a couple of months. Please keep us posted. Jean-Marc > Andy > > > >From: Jean-Marc Valin <Jean-Marc.Valin@USherbrooke.ca> > >To: Andrew White <andrewmarkwhite@hotmail.com> > >CC: speex-dev@xiph.org > >Subject: Re: [Speex-dev] 8.4kbps data rate in 8kbps nb mode > >Date: Fri, 18 Nov 2005 20:30:45 +1100 > > > >Indeed there was a bug in the speex_bits_insert_terminator() function. > >It's now fixed in svn. The only people this bug affected are the ones > >relying on detection of the end of packed Speex frames and som...

...le of eight bits in each frame 79 bits for 3.95kbps 119 bits for 5.95kbps ...etc This means that you have a few unused bits when transporting Speex in the Ogg format (you can achieve a lower number of unused bits if you change the number of frames per Ogg packet to suit the mode). However, in 8kbps mode, the number of bits per frame is 160. I would have expected this to fit into an Ogg segment 20 bytes long. However, when I use (speexenc -n --quality 3) to encode at 8kbps the Ogg segments are each 21 bytes long. Is this an error, or is there extra information put in the 21st byte? I'...

I have successfully DECODED speex on TI C5509: #define TESTENC_BYTES_PER_FRAME 20 /* 8kbps */ #define TESTENC_QUALITY 4 /* 8kbps */ I am trying to generate the files I need with speexenc.exe: speexenc -n --quality 4 -V male.wav male.spx But I can't decode the files on C5x. Yes, I have seen that speexenc.exe adds Ogg header and have deleted the...

...ion ... what do you see as the advantages of ACELP compared to MP3? I had thought that ACELP yielded much smaller files, but now I'm not sure because I've listened to what I think were 16kbps MP3 files (????) with Apple's ITunes that sounded pretty good ... comparable to G.729's 8kbps. I'm speaking about G.729 because I'm not up on Speex attributes ... e.g. what Speex bps compares to G.729's 8kbps quality. -- ----- B. Mitchell Loebel 408 425-9920 cell Executive Director The Tech Startup Connection (formerly The PARALLEL Proce...

...constraint. We need to use a low cost micro controller on a very small PCB. This means there's no space for an external DSP unit. Can someone tell me if using an AVR32 (Atmel uc) which has a floating point calculation unit and DSP instruction set and running at ~50Mhz for a narrow band 8Kbps sampling rate maybe be feasible or out of reach? AT32UC3C0512C: Low Power 32-bit AVR? Microcontroller ? Compact Single-cycle RISC Instruction Set Including DSP Instruction Set ? Built-in Floating-Point Processing Unit (FPU) ? Read-Modify-Write Instructions and Atomic Bit Manipulation ? Performing...

Hello. I have eth1 for WAN(0.0.0.0) and eth0 for LAN (192.168.10.0/24), need to setup that local user get access to $LOCAL_IP network and ip 192.168.10.2, 192.168.10.3 (will be more in future) to internet, but bandwidth to $LOCAL_IP is 128kbps and for internet is 8kbps. i wrote rc.firewall #!/bin/bash #env IPTABLES="/usr/sbin/iptables" LOCAL_IP="62.64.80.0/21 62.221.38.0/24 ........................" # LOCAL_IP network $IPTABLES -P INPUT DROP $IPTABLES -P OUTPUT DROP $IPTABLES -P FORWARD DROP ......... # not impor...

Hi, I am looking how to setup speex codec in codecs.conf for 8 Kbps and 6 Kbps. In config file are many parameters for setting. I don't know what is need to change for narrowbad like 8 Kbps and 6 kbps. Any suggestion? [speex] ;0-10 quality => 4 ;0-10 complexity => 4 ; true / false enhancement => true ; true / false vad => false ; true / false vbr => false ; 0 = off, otherwise,

...9;'m having problem in limiting bandwith on my external interface in the server. i''m having a network here which is online via a linux server with cbq compiled in kernel. i''m having eth0 as internal network card, eth 1 as external network card my internet bandwith line is 8kbps on eth1 i want to limit this 8kbps to 4kbps at eth1 and no shaping on eth0 i tried earlier this with cbq.init script... but all in vain..... i don wanna compile kernel for htb support... i think i wud have to use tc and ingress qdisc.... can anyody help with the commands.... help out ........

Hello developers, I have a question about supported bitrates for SPEEX. Regardless of whether I specify a 10kbps or a 8kbps bitrate, the encoded .spx file is the same size and have the same PESQ value. This makes me wonder if SPEEX supports arbitrary bitrates, or only a certain set. A few more details about my configuration: I am using SPEEX encoder version 1.1.12 I am encoding a narrowband (8KHz) wav file The exact...

...mpleenc.c and sampledec.c are good for learning how to use the API, but the compressed format shouldn't be used in any real application. Jean-Marc > Peter Mlakar wrote: >> >> I have successfully DECODED speex on TI C5509: >> >> #define TESTENC_BYTES_PER_FRAME 20 /* 8kbps */ >> >> #define TESTENC_QUALITY 4 /* 8kbps */ >> >> I am trying to generate the files I need with speexenc.exe: >> >> speexenc -n --quality 4 -V male.wav male.spx >> >> But I can?t decode the files on C5x. >> >> Yes, I have seen that spee...

Hello people, This the first time i post in list. I read the lartc how-to and decided that IMQ with HTB was the solution to solve my problem. The ingress shaping i want is simple, shape the traffic to my ftp-server, i just want to give 8kbps to each client because they only upload to my ftp-server, and i dont want to any class borrowing, each client only send(upload) at 8kbps, not above this rate. I tested this: tc qdisc add dev imq0 root handle 1: htb tc class add dev imq0 parent 1: classid 1:1 htb rate 1Mbit tc class add dev imq...

...r example peer2peer, ftp, etc.). The actual HTB leaf classes are then attached to this class. These leaf classes finally each receive a SFQ which serves the purpose of fair queueing AND giving a package queue to HTB so that it does not have to drop packets. Here is my implementation of it: IFUP=48kbps tc qdisc add ppp0 root handle 1:0 htb default 20 r2q 4 $addclass 1:0 classid $cMAIN htb rate $IFUP mtu 1492 $addclass parent $cMAIN classid $cEMULE htb rate 8kbps ceil $IFUP prio 4 $addclass parent $cMAIN classid $cAPACHE htb rate 32kbps ceil $IFUP prio 2 $addclass parent $cMAIN classid $cDE...

Hello. I have got strange problem with tc utility (iproute2-ss001007) on linux 2.4.18. No matter what rules i am going to test, the resul of ''tc class ls/show'' is always the same : ATSLite ()# tc -s class ls dev eth1 do_page_fault() #2: sending SIGSEGV to tc for illegal read access from 00000000 (epc == 00000000, ra == 00408750) Segmentation fault tc -s qdisc ls , tc -s filter

> I suggest that you start by looking at 8kbps, complexity 0. Actually, I strongly recommand *against* using complexity 0, unless you're really desperate for a few MIPS. The complexity reduction compared to 1 is small, but the loss in quality can be significant. > I (and others) > are running that on a TI C55xx DSP, and it runs a li...

...* Inmarsat Mini-M and M4 at 3.6kbps and Iridium at 2.4 kbps). * A few years ago * I did an evaluation of 4kbps speech codecs for a * low-earth-orbit satellite * operator (now defunct). AMBE+ at 4kbps was intended to be a * "toll quality" * codec, with MOS scores similar to ACELP 8kbps. It was * clearly better than * the couple of other 4kbps codecs which we tested, and MUCH * better than * LPC10. * * Now, AMBE builds in forward error correction, which gives the most * redundancy to the most important vectors in the encoded * speech. This is * optimized for circuit mode...

On Fri, Apr 02, 2004 at 12:33:13AM -0500, Jean-Marc Valin wrote: > Do you have any sample code for that? Also, how do you tell autoconf to > append '-msse' without running into problems when CFLAGS is not set (and > usually defaults to -g -O2, but not always). Example patch attached. It only tries if the use passes --enable-sse; testing by target arch as Aron suggested is

...: 0x0 CPU part : 0x926 CPU revision : 3 Cache type : write-back Cache clean : cp15 c7 ops Cache lockdown : format C Cache format : Harvard # gcc --version arm-linux-gcc (GCC) 3.3.2 (Debian) Configuration: --enable-fixed-point --enable-arm5e-asm Speex specs: Complexity 0, 8Kbps Encoding: ~95%, Decoding: ~44%, without Echo Cancellation / Pre-processor Does anyone know how I can reduce this utilization? Is there any float point code on speexenc/speexdec that wasn't converted to fixed point? -- Eduardo Bezerra Valentin Bacharelado em Ci?ncia da Computa??o - DCC - UF...

...Then we dropped the eighth call and tested with 7. We could hear just fine on the GXP-2000 but the remote end heard us a bit choppy and/or with a robot-like voice. So, we kept dropping calls until they were of acceptable quality. My question is, if they were using g729 which, in theory uses 8kbps plus overhead, they should have been just fine handling eight calls. All the computers were turned off on the network, so there shouldn't have been any other traffic but VoIP. Does anyone have any ideas? How can I improve their audio quality? I requested BellSouth to upgrade their capa...

...ot;Jim Crichton" <jim.crichton@comcast.net> To: <speex-dev@xiph.org> Sent: Monday, May 08, 2006 12:11 PM Subject: [Speex-dev] Speex echo canceller on TI C55 DSP > Jean-Marc, > > I recently started looking at running the echo canceller on a TI C55 DSP > along with the 8kbps narrowband Speex encoder/decoder. This is one of > those "braindead compilers" that you refer to from time to time, and > cannot handle the float struct assignments in the return statements in > pseudofloat.h. > > Most of these were eliminated in build 11311 (patch by B...