search for: mdemoss

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2005 Jun 06
1
SpeexBits Questions
The example in the documentation demonstrates using speex_bits_reset before encoding and decoding each frame. " speex_bits_reset(&bits); speex_encode(enc_state, input_frame, &bits); nbBytes = speex_bits_write(&bits, byte_ptr, MAX_NB_BYTES); " What happens if this is not done? I think I'm missing the point of having a SpeexBits object.
2005 Jun 06
1
SpeexBits Questions
Thanks, it makes more sense to me now. Does speex_bit_read_from also append in that manner? Jean-Marc Valin wrote: > speex_bits_reset is before encoding, not decoding. If you don't call it, > then everything you encode will be appended so it will grow without end. > As for the point of the SpeexBits struct, it's there as a sort of "array > of bits" to it's easy
2005 Jun 07
2
input_frame format
/input_frame/ is a /(float *)/ pointing to the beginning of a speech frame What is the range on the floats in the input_frame that speex_encode() needs? The library that I'm using to get the sound gives me floats that are between -1.0 and +1.0. I was assuming that this is also the case for speex, but I don't see it documented. I'm thinking now that maybe this is not the case for
2005 Jul 17
0
sharing a decoder between 2 inbound speex streams?
What does it sound like if you try to use only one decoder state for multiple streams? Tom Grandgent wrote: >You definitely need to have separate decoders for separate streams. >It has been mentioned before that inter-frame state is critical to >achieving the level of quality for bandwidth that Speex offers. This >differentiates it from iLBC, a codec whose claim to fame is that
2005 Jun 23
2
input_frame format
The API reference says it is "+-2^16 range." Which is right? I've yet to successfully encode or decode anything. Jean-Marc Valin wrote: >It is documented and the range is +-32767 > > Jean-Marc > >Le mardi 07 juin 2005 ? 11:59 -0500, Matt DeMoss a ?crit : > > >>/input_frame/ is a /(float *)/ pointing to the beginning of a speech frame >>