First part of my audio is being cut off during recording

Help for Audacity 2.x.x on Mac OS X.

ImageThis forum is for Audacity 2.x.x on Mac OS X 10.4 and later.
Please state which version of OS X you are using, the exact three-section version of Audacity from Audacity > About Audacity and whether you obtained the .dmg installer or the zip.

Audacity 1.2.x and 1.3.x are obsolete and no longer supported. If you still have those versions, please upgrade at https://www.audacityteam.org/download/.
The old forums for those versions are now closed, but you can still read the archives of the 1.2.x and 1.3.x forums.

First part of my audio is being cut off during recording

Permanent link to this post Posted by cameronsnicholls81 » Tue Apr 18, 2017 9:37 am

Hi there,

If you listen to the attachment you will see that the first section of each person speaking gets cut off at the first word. There are two people having a podcast conversation. Once a person starts to speak there are no issues with the recording. But when the conventions tos and fros there are parts where it cuts and jumps. I haven't experienced this before with the audio equipment I am using. Has the file been destroyed or is there a way of cleanin it up so these cut off words/sections reappear.

Many thanks,
Cameron
Attachments
Tommy N interview .aup
(149.36 KiB) Downloaded 9 times
cameronsnicholls81
 
Posts: 6
Joined: Tue Apr 18, 2017 9:29 am
Operating System: OS X 10.10 Yosemite

Re: First part of my audio is being cut off during recording

Permanent link to this post Posted by steve » Tue Apr 18, 2017 9:55 am

An "AUP" file is not an audio file, it is the part of an Audacity project that organises the audio data but does not itself contain any audio.
To post an audio sample to the forum, "Export" a short section (5 or 6 seconds is usually sufficient) as a WAV file. See here for more detail: viewtopic.php?f=49&t=72887

cameronsnicholls81 wrote:If you listen to the attachment you will see that the first section of each person speaking gets cut off at the first word. There are two people having a podcast conversation. Once a person starts to speak there are no issues with the recording. But when the conventions tos and fros there are parts where it cuts and jumps.

My guess from your description is that the Mac is trying to help you by "enhancing" the microphone input with some form of noise reduction. While that can be useful for Skype and similar, it's terrible for recording, so all "sound enhancements" should be turned off. See here: http://manual.audacityteam.org/man/faq_ ... hancements
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)
steve
Senior Forum Staff
 
Posts: 43920
Joined: Sat Dec 01, 2007 11:43 am
Operating System: Linux *buntu

Re: First part of my audio is being cut off during recording

Permanent link to this post Posted by cameronsnicholls81 » Tue Apr 18, 2017 11:12 am

Hi, thanks for the prompt feedback.

I went into my Mac settings and unticked "use ambient noise reduction" in the sounds settings as advised in the link you shared. However this would have been ticked during my previous recording where I had no issue, so i am slightly unsold on this being the root cause. I have attached a 10sec exert in WAV form. Is there anyway I can rectify this file?

Many thanks,
Cameron
Attachments
Tommy N interview1.wav
(1.92 MiB) Downloaded 10 times
cameronsnicholls81
 
Posts: 6
Joined: Tue Apr 18, 2017 9:29 am
Operating System: OS X 10.10 Yosemite

Re: First part of my audio is being cut off during recording

Permanent link to this post Posted by steve » Tue Apr 18, 2017 12:45 pm

cameronsnicholls81 wrote:i am slightly unsold on this being the root cause

Me too now that I've heard it ;)

I'm trying to guess what it 'should' sound like.
When you say "became a father to a ... and // what's your daughter's name?"
what is the sound that I've indicated with "//" ?
Are there parts of the recording missing? I don't just mean "quiet", but "totally absent"?
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)
steve
Senior Forum Staff
 
Posts: 43920
Joined: Sat Dec 01, 2007 11:43 am
Operating System: Linux *buntu

Re: First part of my audio is being cut off during recording

Permanent link to this post Posted by billw58 » Tue Apr 18, 2017 3:52 pm

This is a long shot, but could you go into the Transport menu and make sure that "Sound Activated Recording" is not checked?
-- Bill
billw58
Forum Staff
 
Posts: 3426
Joined: Wed Aug 12, 2009 2:10 am
Location: Waterloo, Ontario
Operating System: OS X 10.11 El Capitan or later (macOS)

Re: First part of my audio is being cut off during recording

Permanent link to this post Posted by cameronsnicholls81 » Tue Apr 18, 2017 10:09 pm

The first sections of words appear to be completely absent. If you look at the bubble or oval shaped waveform audio they are cut completely at the front of a word and don't represent a typical shape of someone speaking a word. Pic attached.
Attachments
Screen Shot 2017-04-19 at 8.03.22 AM.png
Screen Shot 2017-04-19 at 8.03.22 AM.png (42.31 KiB) Viewed 205 times
cameronsnicholls81
 
Posts: 6
Joined: Tue Apr 18, 2017 9:29 am
Operating System: OS X 10.10 Yosemite

Re: First part of my audio is being cut off during recording

Permanent link to this post Posted by cameronsnicholls81 » Tue Apr 18, 2017 10:11 pm

This is a long shot, but could you go into the Transport menu and make sure that "Sound Activated Recording" is not checked?


I was checked. If I uncheck it now I see it has no effect on the current audio file. Could this have disrupted the original audio file?
cameronsnicholls81
 
Posts: 6
Joined: Tue Apr 18, 2017 9:29 am
Operating System: OS X 10.10 Yosemite

Re: First part of my audio is being cut off during recording

Permanent link to this post Posted by billw58 » Wed Apr 19, 2017 2:46 am

cameronsnicholls81 wrote:
This is a long shot, but could you go into the Transport menu and make sure that "Sound Activated Recording" is not checked?


It was checked. If I uncheck it now I see it has no effect on the current audio file. Could this have disrupted the original audio file?


That would definitely have affected the recording. Leave it unchecked and try another recording and see if the problem goes away.

-- Bill
billw58
Forum Staff
 
Posts: 3426
Joined: Wed Aug 12, 2009 2:10 am
Location: Waterloo, Ontario
Operating System: OS X 10.11 El Capitan or later (macOS)

Re: First part of my audio is being cut off during recording

Permanent link to this post Posted by cameronsnicholls81 » Wed Apr 19, 2017 4:07 am

Thanks Bill.

For future reference, why is that functionality there if it affects the recording?
cameronsnicholls81
 
Posts: 6
Joined: Tue Apr 18, 2017 9:29 am
Operating System: OS X 10.10 Yosemite

Re: First part of my audio is being cut off during recording

Permanent link to this post Posted by waxcylinder » Wed Apr 19, 2017 11:19 am

cameronsnicholls81 wrote:For future reference, why is that functionality there if it affects the recording?

Because some folk want/need it for surveillance-type recordings - they want to avoid taking up disk space with large amounts of silence.

WC
________________________________________FOR INSTANT HELP: (Click on Link below)
* * * * * FAQ * * * * * Tutorials * * * * * Audacity Manual * * * * * Audacity Wiki * * * * *
waxcylinder
Forum Staff
 
Posts: 8877
Joined: Tue Jul 31, 2007 11:03 am
Location: Manchester, UK
Operating System: Windows 10

Next

Return to Mac OS X



Who is online

Users browsing this forum: No registered users and 8 guests