Audio tools question...
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paxsali
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Posts: 18352

PostPosted: Thu, 29th Nov 2018 18:46    Post subject: Audio tools question...
Hi,

I have recorded a meeting with two microphones.

One mic is the one in my headset and records my voice loud and clear.

The other mic stands in the middle of the conference room, it's an omni-directional mic and it's supported to capture the comments and questions of the participants.

I looked at the audio streams and when I overlap them, there is a slight echo (my voice) hearable.

Presumably from the micro-lag between the two mics or maybe sound travel differences.

Anyhow my question is how can I make audio track 2 "more silent" but only when audio track 1 gets loud (has activity)?

Track 1: my voice
Track 2: everyone elses voice (+my voice but slighty more silent).

I want my voice in Track 2 "cancelled" out, so to speak, such that track 2 only "plays" the sounds that DON'T match on both tracks == when OTHER people talk.

Is there a technique or tool that can do that?

I have ffmpeg, Audacity, Pinnacle Studio, ... I can download free software of course if you recommend a tool for the job.

Thanks for helpful responses in advance.

Also, fuck unhelpful responses in advance.



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jackbomb




Posts: 2526
Location: Tortilla de patatas
PostPosted: Thu, 29th Nov 2018 19:16    Post subject:
Sidechain is your friend. You should use any DAW that lets you insert plug-ins and permits sidechain. It would be as follows:

Track 1 > Send 1 > Sidechain input on Compressor inserted in Track 2
Track 2 [Compressor insert with Sidechain]
Both tracks routed to Master (it should be by default)

You should adjust values on compressor so it has around 4:1 ratio, about 140ms Release Time and close to 0.1ms Attack Time. Play with threshold until you see it's affecting the signal sufficiently.

EDIT: As a reliable DAW, you can download Ableton Live Trial from their web and use the 30 day fully functional trial. Beware, mail is required but you can use whatever disposable mail service is out there.

EDIT 2:


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paxsali
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Posts: 18352

PostPosted: Thu, 29th Nov 2018 22:02    Post subject:
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