I'm using Audacity and Soundflower to record sound internally on my MacBook Pro. For example I can play a YouTube video and listen to it with head phones, while recording the sound output. All that works fine, the problem comes when I click record in Audacity. It records the sound, but it is adding an echo or reverb which distorts the sound, especially the bass drum in techno music. How do I turn this echo/reverb off?

Btw, if I listen to the music with my headphones, through Audacity, but I don't click record, the sound is great. The problem comes when I begin to record.

  • Is the music too loud? Audacity displays volume bars for both bass and "other" sound. If they go above limit it will cause problems in sound.
    – Rob
    Feb 11, 2014 at 8:05
  • I don't believe so. I've adjusted the recording volume and it doesn't get rid of the sound. Also, the bars don't appear to be reaching their max.
    – luca590
    Feb 11, 2014 at 18:57
  • Is it possible that you have monitoring activated? Monitoring would output what is coming in and therefor an echo would be created. Mar 30, 2014 at 23:50
  • how would I check that/turn it off if necessary?
    – luca590
    May 3, 2014 at 1:16
  • There's a mic-symbol. When you click it there should be an option called "monitor input" i believe. I'm sorry, I'm not that audacity-savvy. wiki.audacityteam.org/wiki/Recording_levels May 4, 2014 at 22:15

3 Answers 3


I had same problem just fixed it, so assuming you are trying to record audio from Sound Card. The echo reverb is cause by the microphone in your comp, go SoundFlowerBed-->Audio Setup--> Then right click SoundflowerChannel(The one you've setup)---> Set as "Use device for sound input". And that way the microphone its trying to listen to doesnt exist in that channel.


Go to applications folder double click Soundflowerbed. A flower symbol appears on you top menu bar next to volume, etc. check 'built-in output.' You probably already did the following:

In system preferences (sound) set sound effects for built in speakers, set input and output for soundflower.

In Audacity preferences set input and output to soundflower.


Had the same problem found out if I went to the audio source on Audacity (between the mic and speaker symbol) and changed it from SoundFlower to Built in Output the echo reverb is gone.

  • but I want to record straight off the sound card, which I can't do if the output is Built in Output
    – luca590
    May 3, 2014 at 1:15

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .