search for: 12khz

...with Motif/+12025551212 at voice.google.com-da3c == Spawn extension (BaseDial, s, 4) exited non-zero on 'SIP/ng-00000000' core show translations doesn't include any SILK. SILK is installed: core show codec 100018 100018 SILK Custom Format 8khz 100018 SILK Custom Format 12khz 100018 SILK Custom Format 16khz 100018 SILK Custom Format 24khz sean

...OAT 48kHz 2 1150 1000ms 2735ms + 3367ms = 6102ms FIXED 48kHz 2 1150 1000ms 2112ms + 1543ms = 3698ms FIXED 48kHz 1 1150 1000ms 1312ms + 911ms = 2249ms FIXED 24kHz 1 1150 1000ms 1067ms + 783ms = 1872ms FIXED 16kHz 1 1150 1000ms 922ms + 711ms = 1651ms FIXED 12kHz 1 1150 1000ms 1296ms + 193ms = 1507ms FIXED 8kHz 2 1150 1000ms 1014ms + 147ms = 1181ms FIXED 8kHz 1 1150 1000ms 1086ms + 135ms = 1241ms FIXED 8kHz 1 1150 10000ms 11206ms + 1318ms = 12544ms H. Build Options FLOAT: OPUS_BUILD,USE_ALLOCA,CUSTOM_SUPPORT FIXED: OPUS_B...

Could anyone quote a price for the following project. We should be able to generate a specific (say 12Khz) signal at certain intervals (calculated using a price/rate table on a mySQL database) DURING an ongoing conversation. The conversation is to be marked (start and end) with specific signals as well. This is a requirement for special hotel applications where a device counts the signals to calculate...

http://www.pcworld.com/article/160653/skype_gives_away_highquality_audio _codec.html?tk=rss_news any thoughts? Regards, Dean Collins Cognation Inc dean at cognation.net <mailto:dean at cognation.net> +1-212-203-4357 New York +61-2-9016-5642 (Sydney in-dial). +44-20-3129-6001 (London in-dial). -------------- next part -------------- An HTML attachment was scrubbed... URL:

...oes down to > zero. Yes, I think I see that in spectrogram-opus.png too. And then it goes back up to 8k. And the original frequency keeps rising to around 12k AFAICS. > > As far as I can tell (see the attached spectrograms), > > the sound dies out around the point the freq reaches 12kHz. > > You're probably talking about the other frequency that came in, the one I > called the undesired or unwanted frequency. I am talking about the original sweep. > The spectrogram is one thing, > but switching to 1/2 or 1/4 or the playback rate and pressing Play is > anot...

...ng wav file too then, obviously. That's because originally the second sweep was in inverse mono. Therefore, after the mixdown, the sweep got actually subtracted from itself. > As far as I can tell (see the attached spectrograms), > the sound dies out around the point the freq reaches 12kHz. You're probably talking about the other frequency that came in, the one I called the undesired or unwanted frequency. The spectrogram is one thing, but switching to 1/2 or 1/4 or the playback rate and pressing Play is another. Especially, when you have the option to synchonize the uncompr...

...nd the bitrate is still very low, especially if you take advantage of Speex features such as VBR. 8kHz seems totally inappropriate to me for desktop streaming audio, let alone 8-bit samples. Or perhaps your recording equipment is an original Sound Blaster from 1989? (Even that could record at 12kHz.) People often tell me how amazed they are with the audio quality of my VoIP software based on Speex, compared to other VoIP software they've used. What amazes me is how low most people's standards are when it comes to sampling rates. I don't think 16kHz is that much to ask. And...

...own to > > zero. The intermediate opus file already contains only the first of the two repeating sweeps. After around 50s, there is silence. The resulting wav file too then, obviously. As far as I can tell (see the attached spectrograms), the sound dies out around the point the freq reaches 12kHz. Also see the transcript below. > > ????Unfortunately, it seems that the lowpass filtering is somehow a part of > > the actual resampling algorithm. What resampling? > > Why do I think so? Opus normally doesn't > > encode any frequencies above 20 kHz, which would sug...

...l very low, especially if you take > advantage of Speex features such as VBR. > > 8kHz seems totally inappropriate to me for desktop streaming audio, let > alone 8-bit samples. Or perhaps your recording equipment is an original > Sound Blaster from 1989? (Even that could record at 12kHz.) > > People often tell me how amazed they are with the audio quality of my VoIP > software based on Speex, compared to other VoIP software they've used. What > amazes me is how low most people's standards are when it comes to sampling > rates. I don't think 16kHz is t...

> > I am talking about the original sweep. > > The original sweep stops pretty close to 24 kHz. I mean the original sweep _as_encoded_, sorry.

...y and the bitrate is still very low, especially if you take advantage of Speex features such as VBR. 8kHz seems totally inappropriate to me for desktop streaming audio, let alone 8-bit samples. Or perhaps your recording equipment is an original Sound Blaster from 1989? (Even that could record at 12kHz.) People often tell me how amazed they are with the audio quality of my VoIP software based on Speex, compared to other VoIP software they've used. What amazes me is how low most people's standards are when it comes to sampling rates. I don't think 16kHz is that much to ask. And yes...

...s? Maybe applying a low-pass filter before sending to Opus? And why is the 48kHz selected, and why does opus have so few sampling rates (nothing between 24kHz and 48kHz)? The frequency steps for bandwidth are: 4kHz, 4kHz, 8kHz, 24kHz (40kHz in total) With 4,8,12,16 you'd have sample rates 8kHz, 12kHz, 20kHz, 32kHz, 48kHz. Still I'd miss 44.1kHz, though Regards, Ulrich

On Aug 07 00:41:52, petrparizek2000 at yahoo.com wrote: > ????#1. To test encoding at low bitrates, I encoded a sine sweep at 12 kbps > with Opusenc and then decoded the resulting file with Opusdec. What sine sweep exactly? How did you obtain it, and how exactly did you encode and decode it? Jan > The strange > thing was that even though the output wave file was at 48 kHz, it

On Aug 07 10:08:43, petrparizek2000 at yahoo.com wrote: > > What sine sweep exactly? > > An exponential sweep. It started slightly below 24 Hz and ended almost at 24 > kHz. And it was 50 seconds long. > > > How did you obtain it, > > I used Angelo Farina's "Aurora" modules. One of them is called "Generate > sine sweep". Can you please

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After doing an informal (128k) listening test, I have concluded that I prefer Beta4 over RC2. The 16kHz low-pass on the RC2 encoder makes it sound like FM radio. Both encoders SEEM to have a couple of dB bump at 10kHz. JT --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to