[FFmpeg-devel] [PATCH] avfilter: add tremolo filter

[Paul B Mahol]

On 9/21/15, Kyle Swanson <k at ylo.ph> wrote:
> Signed-off-by: Kyle Swanson <k at ylo.ph>
> ---
>  doc/filters.texi         |  19 +++++
>  libavfilter/Makefile     |   1 +
>  libavfilter/af_tremolo.c | 177
> +++++++++++++++++++++++++++++++++++++++++++++++
>  libavfilter/allfilters.c |   1 +
>  libavfilter/version.h    |   2 +-
>  5 files changed, 199 insertions(+), 1 deletion(-)
>  create mode 100644 libavfilter/af_tremolo.c
>

Doesn't produce similar output as sox.

Looks like there is no need to use generate_wave_table
as phase is calculated differently, even tremolo from
tap plugins do something different.

Can you elaborate this approach?