Re: [Sursound] Reduced set of B-format (or HOA) to binaural filters

2016-05-26 Thread Politis Archontis
Thanks for the clarification, this makes perfect sense.. Archontis On 26 May 2016, at 10:06, Fons Adriaensen mailto:f...@linuxaudio.org>> wrote: On Wed, May 25, 2016 at 10:23:23PM +, Politis Archontis wrote: So is this how it is usually done? Convolving all (N+1)^2 HOA channels of order N

Re: [Sursound] Reduced set of B-format (or HOA) to binaural filters

2016-05-26 Thread Fons Adriaensen
On Wed, May 25, 2016 at 10:23:23PM +, Politis Archontis wrote: > So is this how it is usually done? Convolving all (N+1)^2 HOA > channels of order N with the set of binaural filters and summing > for the left ear, and then doing the same for the right but with > inverted polarity for the (N^2+

Re: [Sursound] Reduced set of B-format (or HOA) to binaural filters

2016-05-25 Thread Politis Archontis
On 26 May 2016, at 01:04, Eric Benjamin mailto:eb...@pacbell.net>> wrote: I have used that symmetry in the past. I assume that everyone does. Hi Eric, good to know that it’s used by everybody and I wasn’t totally off in my “revelations” :-). It wasn’t mentioned before in the discussion about

Re: [Sursound] Reduced set of B-format (or HOA) to binaural filters

2016-05-25 Thread Eric Benjamin
I have used that symmetry in the past. I assume that everyone does.  Sent from Yahoo Mail on Android On Wed, May 25, 2016 at 8:37 AM, Politis Archontis wrote: Hi, There has been some discussion before on B-format or HOA to binaural filters (HRTF-based), which no matter if it goes through

Re: [Sursound] Reduced set of B-format (or HOA) to binaural filters

2016-05-25 Thread Politis Archontis
Hi Fons, thanks for the info, it is clear to me now that for any order of HOA to binaural decoding, only (N+1)^2 filters are required for left-right symmetric HRTFs, with a subsequent polarity inversion of N channels corresponding to the left-right antisymmetric SHs (the sine ones) in order to

Re: [Sursound] Reduced set of B-format (or HOA) to binaural filters

2016-05-25 Thread Fons Adriaensen
On Wed, May 25, 2016 at 03:37:34PM +, Politis Archontis wrote: > My question to any of the decoder developers on the list is if you > have seen that anywhere analyzed or mentioned in the context of > binaural decoding?? Haven't seen it in any publications, but the 2nd and 3rd order amb2bin a

Re: [Sursound] Reduced set of B-format (or HOA) to binaural filters

2016-05-25 Thread Bruce Wiggins
Or http://www.brucewiggins.co.uk/?page_id=3 😉 On Wed, 25 May 2016 17:57 Marc Lavallee, wrote: > > You can get it here: > http://www.ambisonia.com/Members/DrWig/bwphdthesis.pdf/ > > > On Wed, 25 May 2016 16:50:38 + > Politis Archontis wrote: > > > Thanks a lot Bruce for the pointers, > > I w

Re: [Sursound] Reduced set of B-format (or HOA) to binaural filters

2016-05-25 Thread Marc Lavallee
You can get it here: http://www.ambisonia.com/Members/DrWig/bwphdthesis.pdf/ On Wed, 25 May 2016 16:50:38 + Politis Archontis wrote: > Thanks a lot Bruce for the pointers, > I will check your work! > > Regards, > Archontis > > On 25 May 2016, at 19:42, Bruce Wiggins > mailto:bruce.wigg..

Re: [Sursound] Reduced set of B-format (or HOA) to binaural filters

2016-05-25 Thread Politis Archontis
Thanks a lot Bruce for the pointers, I will check your work! Regards, Archontis On 25 May 2016, at 19:42, Bruce Wiggins mailto:bruce.wigg...@gmail.com>> wrote: Definately mentioned and looked at in Wiggins, B. Paterson-Stephens, I., Schillebeeckx, P. (2001) The analysis of multi-channel sound r

Re: [Sursound] Reduced set of B-format (or HOA) to binaural filters

2016-05-25 Thread Bruce Wiggins
Definately mentioned and looked at in Wiggins, B. Paterson-Stephens, I., Schillebeeckx, P. (2001) The analysis of multi-channel sound reproduction algorithms using HRTF data. 19th International AES Surround Sound Convention, Germany, p. 111-123. Wiggins, B. (2004) An Investigation into the Real-ti