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

Paul B Mahol onemda at gmail.com
Thu Jan 7 20:54:09 CET 2016

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.

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