similar to: Help on Speex VBR mode

Hi All; If someone used speex and has experience with its settings, then who can help to explain the following: 1) When it is recommended to use VBR (vbr => true)? 2) If there relation between setting the vbr => true and the abr value (for example to be 0 or 1 or 10) and the relation between this value and abr (true / false). 3) Any relation between the quality value and the abr value?

Hi All, I've run into a small hiccup in encoding my audios with Speex. When I encode audience laughter and applause with 'speexenc' (version 1.0.1), the result is quite acceptable... until I enable VBR. Then it distorts horribly. My understanding of VBR is that it frees the encoder to vary the number of bits emitted to better maintain the quality requested, and so I would have

Hi All, We are using speex for linphone in blackfin fixed point platform. The speex version we are using is svn-14525. If we don't disable vbr by "--disable-vbr", the sound quality will be very bad in linphone. But if we disable it, sound will be perfect. I noticed in the speex.org, there is a comment like this: > >Speex 1.2beta3 is out >December 11, 2007 >The most

I have two questions: 1. ?I would like to enable VBR with the Speex codec for VoIP communications. Is this setting made within VoIP clients themselves or is it a setting that must be changed on the specific version of Speex (for example, via command line)? 2. If not, is there any way to create RTP packets via the Speex command line? (The goal is to view the lengths of the packets created by

Hi Marc, Thanks for your quick response. So if VAD is enabled then VBR will be enable although it's a special VBR. How about take out the VAD code from the VBR and remove the code else? Lianghu On 10/24/06, Jean-Marc Valin <jean-marc.valin@usherbrooke.ca> wrote: > > > 1) there are VAD related codes in the source file preprocess.c. > > Will VAD still work If I

Hi Jean-Marc, I used the following code after init of the encoder to get the frame size of my RTP packets. char pcm_data[3200]; char speex_data[3200]; SpeexBits bits; memset(pcm_data, '\0', 3200); memset(speex_data, '\0', 3200); speex_bits_init(&bits); speex_bits_reset(&bits); speex_encode_int(codec_info->enc,

It's not playing at half speed... It's playing at 2x speed. -Dragon Jean-Marc Valin wrote: > If it plays at half the speed, it means that either you're setting the > sampling rate wrong or (if you're using Linux) the machine at the other > end is using the broken i810 OSS audio driver which can't set itself to > mono. About writing code properly, just look at

Hello, I'm try to run speex on some ARM processor. I'd like to cut away some speex features including VBR, ABR and preprocessor while still supporting VAD/DTX. But I've found some puzzles in the source code regarding VAD as below, 1) there are VAD related codes in the source file preprocess.c. Will VAD still work If I don't use the source file preprocess.c? 2)The speex manual

When i use VBR do i need to set VBR quality or speex quality? Is the speex quality referred to the overall quality and instead VBR quality only if i use VBR? Do these qualities override each other? Thanks. --------------------------------- L'email della prossima generazione? Puoi averla con la nuova Yahoo! Mail -------------- next part -------------- An HTML attachment was scrubbed...

What do you mean by write my code properly? With the way it's written right now it is encoding writing out to a stream and decoding from that stream but i'd like to use VBR but when i try it my app fails. and also on a different note I've written some test apps where it recordes from the mic encodes decodes then playes but when i try streaming it over the internet it has long

On 2010-04-11 10:09, Randy Yates wrote: > If I specify VBR mode via > > speex_encoder_ctl(pSpeexEncoder, SPEEX_SET_VBR,&isTrue); Try: speex_encoder_ctl(pSpeexEncoder, SPEEX_SET_ABR, &desiredRate);

Josh, Yes, you can change VBR quality or ABR average bitrate at any time. You don't need to do anything special. I use this feature (changing VBR quality midstream) from time to time and it's quite convenient. Tom Joshua Gargus <schwa at fastmail.us> wrote: > > Hi there (from speex-dev newbie), > > Is it possible to change the target VBR on the fly? The

For a bootable usb drive, syslinux seems use MBR and VBR to find vmlinuz and ramdisk. And VBR stays in the first sector of partition, 63rd for example. So does VBR conflicts the filesystem on partition?

Sorry for the late response. I am set to digest on this list. One of my chief complaints about mailman (besides non-searchable archives), is that you can either get every message or digest, but not "digest except for threads to which I have responded for which I want every message directly". > The command line installers have the core module and the bootloader file, all embedded

Thanks for the response, Gene. Much appreciated. I didn't get all of it; mind if I follow on below? ldlinux.sys is ldlinux.bin without the VBR (Volume Boot Record) code. > Makes sense. > > 1. Where is the code that goes in the VBR or Block Group 0 padding? > > diskboot.inc. > which appears to be included in diskstart.inc. I will have to dig in and see how this all gets

Hi guys, I'm using Opus for speech in wide-band mode (sampling rate 16000) and 20ms frames with signal type set to SIGNAL_VOICE. I have a few questions here: 1. When I choose VBR mode, the codec seems to choose the bitrate on its own. However, that seems to be an issue on mobile devices. In some cases, when I configure the bitrate to say 20kbps, I see that the outgoing codec bitrate at

Congrats to the team for 0.10.0. It sounds really good in the tests I've done so far. I'm really looking forward to the 1.0 release. One question though: could you explain briefly the difference between VBR and unconstrained VBR? And, in my case, the $64K question: is there any situation where CELT could produce more data than specified by nbCompressedBytes when encoding? Thanks

Gene, thanks for doing "Reply-All". I only get digest, so this keeps me in the loop. Appreciated. > which appears to be included in diskstart.inc. I will have to dig in and > see > > how this all gets compiled (pointers always appreciated :-) ). > > Yes. > Is the build process documented? Or am I just going to have to plod through the makefiles? > As Ady said,

Hi Syslinuxers, I am trying to understand the basic load chain in fat32 and ext4. I dug into the assembly for MBR, which is pretty straightforward: 1. Find boot partition (or use the pre-defined one at byte 440 for altmbr.bin) 2. Load the first 512-byte sector of the partition (VBR for fat32, Block Group 0 padding for ext). 3. Execute that code The code that is loaded, however, has to be too

I did some further investigating into this issue and here's what I found: It appears somewhere between ices0.1.0 and ices 0.2.0 is where the "bug" (for lack of a better term) was introduced that i'm noticing. When I compile ices0.2.0 w/lame 3.89beta, the VBR is *NOT* reencoded, but instead streamed out at full VBR bitrate(s). However, when using ices0.1.0 w/lame 3.89beta, it