search for: 6kbps

...rc.valin@usherbrooke.ca> Cc: speex-dev@xiph.org Sent: Wednesday, December 12, 2007 4:13:35 PM Subject: Re: [Speex-dev] 4kbps sounds robotic on TMS320C64 Jean-Marc, Yes, fixed-point is enabled (#define FIXED_POINT in config.h). I haven't tried anything lower than 4kbps; like I mentioned, 6kbps sounds fine so it's very strange. The only code I changed to get 4kbps was setting quality to 1 so that is the only difference in my test code between using 4kbps and 6kbps. It seems to be in the encoder. On the ARM side, I encoded a 8Khz 16-bit mono sample in 4kbps mode, decoded it, and pl...

Jean-Marc, Yes, fixed-point is enabled (#define FIXED_POINT in config.h). I haven't tried anything lower than 4kbps; like I mentioned, 6kbps sounds fine so it's very strange. The only code I changed to get 4kbps was setting quality to 1 so that is the only difference in my test code between using 4kbps and 6kbps. It seems to be in the encoder. On the ARM side, I encoded a 8Khz 16-bit mono sample in 4kbps mode, decoded it, and pla...

Hi, I'm currently working on the TI DaVinci processor, which has an ARM926 processor and a TMS320C64+ DSP in it. I have been using Speex 6kbps (narrowband, quality=2, complexity=1, perceptual_enh=0) on the DSP C64+ side without any issues; the voice sounds very good for such a low bandwidth requirement. However, recently, I tried out the 4kbps mode (changing quality to 1) on the DSP and it sounds robotic; if I ported the same 4kbps code...

Hi, I noticed that speex.org has a banner that mentions that Opus is better than Speex in all aspects. The supported bitrate range for Speex seems to be as low as 2kbps though but Opus can only go as low as 6kbps. Is this one aspect where Speex is still preferred? (I understand that it's not a very common scenario though). Thanks, Manpreet. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/opus/attachments/20141104/2c855dd5/attachment.htm

...dev UPLOAD { egress { class ( <$emule> ) ; class ( <$smtp> ) ; class ( <$ssh> ) if tcp_dport == 8080 ; /*Changed port from 22 to 8080 */ class ( <$otro> ) if 1 ; htb () { class ( rate UPRATE, ceil UPRATE ) { $emule = class ( prio 8, rate 6kBps, ceil P2P ) { sfq; } ; $smtp = class ( prio 1, rate 6kBps, ceil 12kBps ) { sfq; } ; $ssh = class ( prio 0, rate 3kBps, ceil 5kBps) { sfq; } ; $otro = class ( prio 1, rate 8kBps, ceil UPRATE ) { sfq; } ; } } } } Also, given the priorities it''s expected t...

Is there a way to play adpcm, 6KHz in asterisk? If yes, where can we get this codec? Thank you. Alex Zarubin -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20030916/b8be2453/attachment.htm

Hi all, Please guide me How to change frame_size of opus codec at run-time (20ms, 40ms, 60ms) I'm stucking in this case: 1. init codec width default config (frame_size =20ms, bandwidth=48KHz, bitrate = 48kbps...), then in runtime changing: - bitrate = 24, 16, 6kbps: sound is OK - frame_size = 40ms, 60ms: Not OK, sound is distort so bad 2. init codec with frame_size = 40ms , others is default, then in runtime changing: - bitrate = 6kbps: OK - bitrate = 24, 48kbps: Not OK I'm using opus_encoder_ctl api: opus_encoder_ctl(opus_data->enc,OPUS_SET_E...

Hi! So here is what I got with different encoder settings; still not sure what the "best" setting is. 6kbps seems to add distortions, so I tried 12kbps. MP3-Original: LAME 3.99r, 120kbps, 44100Hz, Stereo, VBR V5 (22:23, 19.8MB) Opus (--raw-rate 44100 --bitrate 56 --vbr --comp 5): (44:45?, 23.4MB): Broken Opus (--bitrate 56 --vbr --comp 5 --ignorelength - %d): (22:23, 12.1 MB, 74kbps) Opus (--bitrate 6 --...

Hi! I have some MP3 audio material which is basically speech with some background noises, essentially > 120Hz and < 5kHz. I had the idea to reduce the file size by recoding the material to Opus at 56kbps. Unfortunately the result is a file sampled at 48kHz much larger than the original. I hope you agree that it does not make sense to create a file larger than the original (MP3). Of course the encoder sees just WAV (RAW) with possible MP3 decoding artefacts, but anyway: Is there a way to handle this...

...aid that you would answer the way you did: I thought about my question after I sent it, and the "LP" in CELP is what makes it a sequential process; it can't do linear prediction on a frame that the other processor is encoding. I'm looking at a specific set of parameters, probably 6kbps without VAD. It doesn't have to sound great, just understandable. Being able to recognize the person's voice on the other end is also a requirement. Some of the very low bitrate codecs like 2.4kbps sound more like a speech synthesizer than the actual speaker's voice; this won't b...

...rsden Tactical Communications Consultant FinMars Consulting Ltd UK: +441865589833 Finland: +358453046287 On 20 December 2013 18:24, Stuart Marsden <stuartmarsden at finmars.co.uk>wrote: > Cliff, > > Yes it would be good, but very hard to get a figure for the quality. > > At 6kbps I assume it does not bother trying to figure what mode to use as > at that rate it can only use SILK. When I run some other bitrates it may > get a bit slower trying to decide whether it is voice or music. > > I started with low bit rate because I am only really interested in Voice >...

Hi All, What would be interesting would be a plot of complexity versus subjective or object audio quality. I've not had a chance to look at the new analysis code in 1.1 so maybe in the case of a 6kbps compression you could clarify what decisions would it be making that would justify the extra complexity? Best Regards Cliff Parris -----Original Message----- From: opus-request at xiph.org Sent: Thursday, December 19, 2013 6:07 PM To: opus at xiph.org Subject: opus Digest, Vol 59, Issue 21 Se...

Cliff, Yes it would be good, but very hard to get a figure for the quality. At 6kbps I assume it does not bother trying to figure what mode to use as at that rate it can only use SILK. When I run some other bitrates it may get a bit slower trying to decide whether it is voice or music. I started with low bit rate because I am only really interested in Voice and very low bit rate....

Resampling to 48khz speeds them both up but the disparity is about the same: 2.609 to 3.69. Best Regards, Stuart Marsden On 17 December 2013 17:04, Stuart Marsden <stuartmarsden at finmars.co.uk>wrote: > Christian, > > Complexity 0, 6kbps: > > 0.9.14 Speed 5.204 > 1.1 Speed 5.218 > > A slight win on that run but they vary enough to say about the same. At > 64kbps > > 0.9.14 Speed 6.35 > 1.1 Speed 6.001 > > I get more variation on these so I would say they are quite close and the > difference may n...

...onsultant > FinMars Consulting Ltd > UK: +441865589833 > Finland: +358453046287 > > > On 20 December 2013 18:24, Stuart Marsden <stuartmarsden at finmars.co.uk> wrote: > Cliff, > > Yes it would be good, but very hard to get a figure for the quality. > > At 6kbps I assume it does not bother trying to figure what mode to use as at that rate it can only use SILK. When I run some other bitrates it may get a bit slower trying to decide whether it is voice or music. > > I started with low bit rate because I am only really interested in Voice and very low...

switch between speech and music encoding rather quickly. I wanted to try that for a CD track that has a vocal (talk) introduction = followed by music (just two instruments). Using foobar2000 with some custom setup for Opus, I tried VBR encoding = with a 256kbps setting (opus-tools-0.1.9-win32). My expectation was that = the bitrate would be significantly lower than 256kbps while speech is = encoded, while it would go up for the music part. However during playback = I could not see a significant difference in foobar's (version 1.3.2 before = you ask) d...

...mp; ! (ip_len & 0xffc0) && (raw[33].b >> 4) & 0xff if 1 ; htb () { class ( rate UPRATE, ceil UPRATE ) { $prio = class ( prio 0, rate 6kBps, ceil UPRATE ) { sfq; } ; $p2p = class ( prio 7, rate 1kBps, ceil P2P ) { sfq; } ; $interactive = class ( prio 1, rate 18kBps, ceil UPRATE ) { sfq; } ; } } } } CLASSES class htb 2:1...

...1/14 05:55 PM, Manpreet Singh wrote: > Hi, > > I noticed that speex.org <http://speex.org> has a banner that mentions > that Opus is better than Speex in all aspects. The supported bitrate > range for Speex seems to be as low as 2kbps though but Opus can only go > as low as 6kbps. Is this one aspect where Speex is still preferred? (I > understand that it's not a very common scenario though). > > Thanks, > Manpreet. > > > > _______________________________________________ > opus mailing list > opus at xiph.org > http://lists.xiph.org/m...

...land: +358453046287 > > > On 20 December 2013 18:24, Stuart Marsden <stuartmarsden at finmars.co.uk > <mailto:stuartmarsden at finmars.co.uk>> wrote: > > Cliff, > > Yes it would be good, but very hard to get a figure for the quality. > > At 6kbps I assume it does not bother trying to figure what mode to > use as at that rate it can only use SILK. When I run some other > bitrates it may get a bit slower trying to decide whether it is > voice or music. > > I started with low bit rate because I am only really in...

Hi, the script below should allow to get ssh connections running well while downloading, but even the 100kbps (100kbyte/s?) doesnt work - can still download with 500+kb/s. Whats wrong? INTERFACE=eth0 #clear all on $INTERFACE tc qdisc del dev $INTERFACE root tc qdisc add dev $INTERFACE root handle 1:0 htb default 15 #root qdics, allows borrowing for its children tc class add dev