[FFmpeg-devel] [PATCH] avfilter: add SOFAlizer audio filter

Paul B Mahol onemda at gmail.com
Thu Jan 7 21:10:19 CET 2016

On 1/7/16, Paul B Mahol <onemda at gmail.com> wrote:
> On 1/7/16, Paul B Mahol <onemda at gmail.com> wrote:
>> On 1/7/16, Roger Pack <rogerdpack2 at gmail.com> wrote:
>>> On 12/10/15, Paul B Mahol <onemda at gmail.com> wrote:
>>>> Signed-off-by: Paul B Mahol <onemda at gmail.com>
>>>> ---
>>>> Lite version of one sent to VLC mailing list with only slow but high
>>>> quality
>>>> mode present.
>>>> To use you need recent netCDF library, SOFA file(s), multichannel audio
>>>> and
>>>> headphones.
>>> Could you post an example or step by step instructions of using this,
>>> for followers? A specific SOFA file, for instance, etc.
>> Download some sofa files from here
>> http://www.sofaconventions.org/mediawiki/index.php/Files
>> and try each one and pick one sounding best.
>> The final sounding result also depends on your headphone frequency
>> response.
> First: download one of 7.1 testing samples which test single speaker at
> time.
> Then make sure that virtual speaker position is correct.
> Second: increase/decrease gain option so overal volume match original
> input.
> Third: test if no unusal equalization happened, eg. significant loss
> of lows, mids or highs.

For SOFA files, try this one for start:


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