----- Original Message -----
From: Kjetil Matheussen <k.s.matheussen@gmail.com>
To: garden_9652@yahoo.co.jp
Cc: "jack-devel@lists.jackaudio.org" <jack-devel@lists.jackaudio.org>
Date: 2019/5/14, Tue 17:39
Subject: Re: [Jack-Devel] How to capture audio from speaker?

On Tue, May 14, 2019 at 10:33 AM <garden_9652@yahoo.co.jp> wrote:
>
>
> Hi,
>
> I'm writing an MacOSX app that is able to capture audio from speaker and save the audio file to disk in wav or whatever format for further replay.
>
> I googled a lot and found out that Jack might help me to do this kind of thing.
>
> Is there any tutorials for this? Should I download JackOSX? I have cloned jack2 source code and successfully build example-clients/capture_client.c .
>
> Could you give me some guide?
>

Hi,
I don't know whether you are doing this for fun/learning experience,
or you are looking for a program that does this.
But if the latter is true, this is the main purpose of the program
jack_capture: http://archive.notam02.no/arkiv/src/jack_capture-0.9.73.tar.gz