search for: gt3b1

Hi everyone, Recently I made an attempt at merging the tunings of GT3b1 into the official Xiph.org 1.0.1 libvorbis code. While 99% of the GT3b1 tunings are independent of 1.0.1, there is one particular value (_psy_noiseguards) which affects the whole quality range. I've chosen to use the 1.0.1 values since they changed since 1.0. Therefore, files encoded i...

> So this really looks like the current state of the art as far as Vorbis > is concerned. I remember hearing that there was a sound quality issue which boosted high frequencies by 1 or 2dB in Vorbis files at less than q6 or so. Does anyone know if this still the case? -- Graham Mitchell - computer science teacher, Leander High School "I come into His presence simply. No

...ode-option that allows the user to change the global mapping value for the particular quality value they encode at. The option is called "impulse_trigger_profile" and can take on values of 0 to 6, where 0 to 4 are the default _psy_global_44 values while 5 and 6 are basically 3 and 4 from GT3b1. Basically using a higher number makes Vorbis switch to short blocks more often in order to reduce a smearing noise that occurs at mid q on microattack samples like the Originalsmall.flac sample at HA.org. Vorbis isn't switching to short blocks enough on these samples so 'upping' the...

Hi, Was wondering if any gurus could tell me if it is possible to stream Ogg on very low bandwidth links (for example satellite phone) where the expected bandwidth would almost certainly be less than 19Kbps, and probably more like 10Kbps. I am not after great audio at this bitrate, mono with an audio bandwidth less than 5KHz. I have done some testing (not streaming though) listening to 8Kbps MP3