Jean-Marc Valin <jean-marc.valin at usherbrooke.ca> writes:> On 2010-04-03 23:56, Randy Yates wrote: >> The sentence "Unlike some other speech codecs, it is possible to control >> the tradeoff made between quality and bit-rate" implies to me that they >> are NOT the same thing. > > This sentence should read: "tradeoff made between quality and *complexity*" > > Sorry about that. > > Jean-MarcNo problem. Thanks for the clarifications. Jean-Marc, did I see your name on some of the GSM codecs back in the late 90's written in TI TMS320C54x assembly? -- Randy Yates % "Though you ride on the wheels of tomorrow, Digital Signal Labs % you still wander the fields of your mailto://yates at ieee.org % sorrow." http://www.digitalsignallabs.com % '21st Century Man', *Time*, ELO
On 2010-04-04 00:28, Randy Yates wrote:> Jean-Marc, did I see your name on some of the GSM codecs back in the > late 90's written in TI TMS320C54x assembly?Highly unlikely -- I was then an undergrad student with next to zero knowledge in audio coding. Jean-Marc
Some related questions: 1. If we don't specify a SPEEX_SET_VBR_MAX_BITRATE, or a (standard) bitrate, then how is the bitrate of SPEEX_SET_VBR mode constrained in wideband mode? 2. Is a SPEEX_SET_BITRATE parameter utilized in SPEEX_SET_VBR mode? 3. If the encoder is set into SPEEX_SET_VBR bitrate mode and wideband sample rate mode, with all other remaining parameters at their defaults, what will the "bitrate" be? -- Randy Yates % "Bird, on the wing, Digital Signal Labs % goes floating by mailto://yates at ieee.org % but there's a teardrop in his eye..." http://www.digitalsignallabs.com % 'One Summer Dream', *Face The Music*, ELO