Mic recording fades in [SOLVED]

Hi. I’m contacting Logitech support about this as well, but I thought I would ask around here if other people have had similar problems.

I recently got a Logitech H540 USB headset. And since getting the headset it takes 5-10 seconds to “warm up” when recording with Audacity.

For example: I hit record and start speaking, the audio is really quiet for a few seconds and slowly gets louder until it is normal. I’ve attached a screenshot to help visualize the issue. I hit record and talked at a normal talking volume for 15 seconds. This is what I got:
audio warmup.png
Anytime I stop recording and start again, I have to talk for a few seconds while it slowly adjusts to my voice. It doesn’t matter how loudly I talk when I start recording, I have practically yelled into it and it doesn’t seem to care, still starts off quiet and gets louder.

This makes recording this rather tedious, as I need to talk for a few seconds to get to “normal”. Once It’s at normal, it’s good until it stops recording. I feel like it needs to adjust to my voice, because if I start recording, but don’t speak, it still takes 5-10 seconds after I start speaking to warm up.

Anyway, been fighting this for awhile and finally thought I’d ask around for help.

Thanks much.

I’m running Audacity 2.0.0 on OS X 10.9.1

The only thing I can suggest is to look in “Sound” in System Preferences. Choose the “Input” tab and if you see it, ensure that “Use ambient noise reduction” is unchecked.

2.0.0 is now obsolete, I suggest you upgrade to the current 2.0.5 from http://audacityteam.org/download/mac .


Thanks. There actually was no “Use ambient noise reduction” checkbox… until I switched my mic input back to Internal Mic. Then it showed up, I unchecked it, switched my mic input back to the headset, and now it works as expected.

Thanks again.

Bizarre. Thanks for mentioning that. I noted that step on http://manual.audacityteam.org/o/man/faq_recording_troubleshooting.html#enhancements (the change will appear at the next release of Audacity).