Re: Serial connection between multiple pannerNodes recursively

Hmm.  Though I can see how this would work with classic pan positions, when
using the HRTF rather than equal-power, it seems like this would kinda fall
apart.

IIRC, the issue in blink is related to our Doppler implementation.`



On Fri, Feb 28, 2014 at 9:46 AM, Hongchan Choi <choihongchan@gmail.com>wrote:

> Hi Ray!
>
> The serial connection of two different panner nodes is not that unusual.
> Actually, it is quite common in the music production software. For example,
> you can create a mix group with multiple audio streams (which has
> individual pan position) and you can control the stereo position of the
> whole mix group with the last panner node. So being able to create a serial
> connection with multiple panners should be possible or even essential, I
> guess.
>
> However, I am not sure what the 'recursive serial connection' means in the
> question, and also the meaning of the second example is unclear to me. Is
> this about implementing Doppler effect by creating a loop between multiple
> panner nodes?
>
> -Hongchan
>
>
>
>
> On Fri, Feb 28, 2014 at 9:12 AM, Raymond Toy <rtoy@google.com> wrote:
>
>> You've been reading the blink/webkit code for panners. :-)
>>
>> I do not know the reason, but it seems Chris Rogers only expected to have
>> each source connected to at most one panner.  What would it mean to have a
>> source connected to two different panners serially?
>>
>>
>> On Thu, Feb 27, 2014 at 4:27 AM, KeonHo Kim <keonho07.kim@samsung.com>wrote:
>>
>>> Dear All,
>>>
>>>
>>>
>>> Here is an question about connection between multiple pannerNodes.
>>>
>>>
>>>
>>> Example,
>>>
>>> Source1 -> Panner1 ->
>>>
>>>                            Panner3 -> Destination
>>>
>>> Source2 -> Panner2 ->
>>>
>>>
>>>
>>> In this case, generated buffers from Source1 refer values such as
>>> dopplerShift, distanceConeGain, azimuth and elevation from Panner1 and
>>> Panner3.
>>>
>>> In the next connection, generated buffers from Source2 refer values from
>>> Panner2 and Panner3.
>>>
>>>
>>>
>>> If there is recursively serial connection between multiple panner nodes
>>> to audiobuffersourcenode, which panners should affect the pitch of
>>> audioBufferSource for dopper shift.
>>>
>>>
>>>
>>> In example, Source1 ( Panner1 or Panner3, both ? )
>>>
>>> Destination = Panner3 ( Panner1 ( Source1 ) ) ) ?
>>>
>>> Destination = Panner1 ( Source1 ) ?
>>>
>>> Destination = Panner3 ( Source1 ) ?
>>>
>>>
>>>
>>> On process of each AudioNode will generate buffers for their purpose.
>>>
>>> Is there anyone can guide clearly this case about all values how to work?
>>>
>>
>>
>
>
> --
> Hongchan Choi
>
> PhD Candidate, Research Assistant
> Center for Computer Research in Music and Acoustics (CCRMA)
> Stanford University
>
> http://ccrma.stanford.edu/~hongchan
>