[FFmpeg-user] aevalsrc question

[Paul B Mahol]

On 12/18/16, Adam Puckett <signalsender103 at gmail.com> wrote:
> Hey list,
>
> Some time ago I posted a question about sweeping from one frequency to
> another using aevalsrc and the t parameter of the expression. My
> command line was something like:
>
> ffmpeg -f lavfi -i aevalsrc=sin(262*2^^(t/10)*2*PI*t):d=10 test.ogg
>
> and I'm still hearing higher frequencies than the desired output. I'm
> also trying lots of other variations in the formula, and I'm trying to
> do it without loading and storing commands.
>
> What am I doing wrong and how an I fix this?

I don't get what you want. Can you explain it with math and logic?