[SoX-users] How-to: mixing 2 audiofiles with "dynamic" fading out

[Sebastian S. <ba...@me...>]

Hello,

I would like to automate my podcasts. Therefore I have to mix 2 audofiles. One with my voice and another with a music. Let it be for example: "voice.wav" and "bg-music.wav".

The mixing is quite easy with SoX, but the output-file will always be as long as the full bg-music.wav.

Is there a way to create a fadeout after the time of "voice.wav" plus 5 seconds? Fading out at a fixed time like "fade 0 120 3" works fine, but the thing is, that I do not know the time of voice.wav. It is different every time.

Would be great if someone could help me. Thank you very much,
Sebastian