GEgeorgecmu·Jun 13, 2021Submission
Soundflower: macOS system extension to pass audio between applications
2 points · Open discussionmattingalls
Soundflower
Objective-C2017–2021
mattingalls / Soundflower
Soundflower
MacOS system extension that allows applications to pass audio to other applications. Soundflower works on macOS Catalina.
6Distinct people
6Mentions
0Explicit recommenders
9KGitHub stars
What to know before exploring
What it is
MacOS system extension that allows applications to pass audio to other applications. Soundflower works on macOS Catalina.
GitHub
Where it is used
No documented product use has been verified yet.
What people are saying
No recommendation phrase was found in the indexed comments.
No classified warning is attached to this page. Read the discussions before treating silence as approval.
Also in these discussions
No other repository is repeatedly linked in the same discussions.
This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 5:04:57 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by year6 dated mentions
Observed mentions: 2017-12-11 06:48:18 UTC to 2021-06-13 01:49:27 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2017 | 2017-01-01 00:00:00 UTC | 2018-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2018 | 2018-01-01 00:00:00 UTC | 2019-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2019 | 2019-01-01 00:00:00 UTC | 2020-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2020 | 2020-01-01 00:00:00 UTC | 2021-01-01 00:00:00 UTC | 3 | 1 | 2 |
| 2021 | 2021-01-01 00:00:00 UTC | 2022-01-01 00:00:00 UTC | 1 | 1 | 0 |
What Hacker News says
6 sourcesWhile recording your screen, you can also record your microphone by choosing it in the Options menu. However, there is no way to record audio that is output to your speakers unless you first create a custom audio source using Soundflower (https://github.com/mattingalls/Soundflower) or Loopback (https://rogueamoeba.com/loopback/).
In Ask HN: What feature did you find after years of using macOS?Soundflower: macOS system extension to allow apps to pass audio to other apps
1 points · Open discussionOn Mac I use Soundflower to redirect audio between apps.
There'a also AULab which can be used for some effects in realtime (e.g. adding reverb and redirecting to built-in audio out).
https://github.com/mattingalls/Soundflower
https://www.apple.com/nz/itunes/mastered-for-itunes/
In OBS Studio: Open-source software for video recording and live streamingGoogle Docs has a voice typing functionality [1]. I used Soundflower [2] to send audio playback to a digital input device, and had Google Docs listen to this device. This worked "okay" for transcribing a blog post from a voice memo.
[1] https://qz.com/work/1087765/how-to-transcribe-audio-fast-and...
[2] https://github.com/mattingalls/Soundflower
In Real-time Continuous Transcription with Live TranscribeSoundflower can divert audio: https://github.com/mattingalls/Soundflower/releases/
In Apple ‘On Schedule’ to Terminate Music Downloads by 2019