[audacity4blind] Re: mixing two audio files
- From: David Bailes <david_bailes@xxxxxxxxxxx>
- To: audacity4blind@xxxxxxxxxxxxx
- Date: Mon, 11 Nov 2013 10:55:48 +0000 (GMT)
Hi Mike,
below are a few more details of the auto duck effect. Note, that you have to
import rather than open files if you want to create tracks out of more than one
file in a project. This is because opening a file creates a new project,
unless the project is a newly created empty project. On the file menu, open the
import sub menu, and choose audio (ctrl+shift+I). So if you've got two files,
you can open or import the first one, but you have to import the second one.
Auto Duck
The Auto Duck effect reduces (ducks) the volume in the selected audio during
the periods in which the level of another track, known as the control track,
exceeds a certain threshold. The Auto duck effect uses the track which comes
immediately after the last selected track as the control track.
So, for example, if you've got one music track, and one voice track in the
project, and you want to reduce the volume of the music when there's speech in
the voice track:
1.Make sure that the music track is the first track. If it isn't, you can move
a track up or down the track table by opening its menu, and choosing Move Track
Up or Move Track Down respectively.
2.Make sure that the voice track is not selected.
3.Select all the audio in the music track. To do this, first make sure that the
track is selected. Then select a time range that includes all the audio in the
track: press J to move the cursor to the start of the audio in the selected
track, and then press Shift + J to select from the cursor to the end of the
audio in the selected track.
4.On the Effects menu, open the Auto Duck dialog, and if you've happy with the
default settings, then just press Enter to press the default OK button.
Auto Duck settings:
- Duck amount. This is the amount of volume reduction of the selected audio
during the periods when the level in the control tracks exceeds the threshold.
Its given in decibels, and its default value is -12dB.
- Maximum pause. If the time between two periods when the level in the control
track exceeds the threshold is less than the Maximum pause parameter, then the
selected audio continues to be ducked in this time – there isn't a fade up and
then a fade down. If for example the control track contains speech, then if
there are pauses less than the maximum pause, then the selected audio continues
to be ducked during this period. The default value of Maximum pause is 1
second. Note that regardless of this setting the Maximum pause is always at
least the sum of the outer fade lengths, which are described below.
- Fade lengths. The time over which the volume in the selected audio is faded
down to the reduced volume is made up of two parts. The volume of the selected
audio can start to fade down before the level in the control track starts
exceeding the threshold. This time interval is known as the outer fade down
length, because it occurs outside of the time when the threshold is exceeded,
and its default value is 0.5 seconds. In addition, the volume can finish fading
down after the threshold starts to be exceeded. This interval is known as the
inner fade down length, because it occurs inside the time when the threshold is
exceeded, and its default value is 0 seconds.
In an entirely similar manner, the time over which the volume in the selected
audio is faded back up is also made up of two parts: the inner and the outer
fade up lengths, which have default values of 0 and 0.5 seconds respectively.
- Threshold. The selected audio is ducked during the periods when the level in
the control track exceeds this threshold. It's given in decibels, and its
default value is -16dB.
David.
--------------------------------------------
On Fri, 8/11/13, Mike Bernard <mbern6516@xxxxxxx> wrote:
Subject: [audacity4blind] Re: mixing two audio files
To: audacity4blind@xxxxxxxxxxxxx
Date: Friday, 8 November, 2013, 18:39
Hi Robby,Could you explain how to use the audo
duck feature in step-by-step instructions? I looked at the
built-in manual that comes with Audacity, and like many
articles we find online that explain how to do something,
they’re assuming that the user is using a mouse, and
I’m not able to use the mouse. I’m hoping to
create a recording that simulates a radio broadcast like
sound. Whereas, at the beginning, there’s
approximately 15 seconds of instrumental music, then at the
point where the narration would begin, the music will fade
down but continue to play at a comfortable level so that it
doesn’t get in the way of the voice track. Thus,
allowing the listener to hear both the music and voice
track. Then, when the voice track ends, the music will fade
back up and play for a few seconds, then fade out.
Thanks.MikeRochester, NY. USA
From: audacity4blind-bounce@xxxxxxxxxxxxx
[mailto:audacity4blind-bounce@xxxxxxxxxxxxx] On Behalf Of
Robbie
Sent: Friday, November 08, 2013 1:25 AM
To: audacity4blind@xxxxxxxxxxxxx
Subject: [audacity4blind] Re: mixing two audio
files Hi Mike!
You can use the Auto Duck effect to create a
voice over. Make sure the voice track is below the music
track and use the track align options to move the voice
track to where you want it to start. Then make sure only the
music track is selected, select the audio by pressing j
shift-k and apply Auto Duck. If you want The music to
fade to silence during the voice track cut it off where you
want it to end and perform a fade before applying Auto
Duck. Cheers,
RobbieFrom: audacity4blind-bounce@xxxxxxxxxxxxx
[mailto:audacity4blind-bounce@xxxxxxxxxxxxx]
On Behalf Of Mike Bernard
Sent: Thursday, November 7, 2013 11:43 PM
To: audacity4blind@xxxxxxxxxxxxx
Subject: [audacity4blind] mixing two audio
files
Hello fellow Audacity users,I'm in the process of creating a demo
recording for an online radio station to which I'm
thinking about joining in the near future.I'd like to add music to an already
existing audio file in such a way that I can combined the
music and the audio file together. Thus, when the completed
file is played back, in the beginning of the recording, the
music will start to play first, then after so much time, the
music will fade slightly and the audio file containing me
speaking will play, creating a smooth balance between my
voice and the music, similar to what happens when someone is
talking live over the radio with background music playing.
Then, once that recording is done, I can fix it so that the
music will either fade back up, or fade to silence
completely, when the speaking portion of the recording is
done. Thus, allowing me to create a somewhat professional
sounding recording. I say somewhat professional, because I
don't have any pro audio equipment or anything fancy
like a studio would. Also, is there a way to get audacity to
record in stereo? Thanks.MikeRochester, NY.
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