Audacity Forum

I import an .mp3 file and
choose a very short special time interval and
fit it to the window.
I look at the left end pull-down and
see that left channel has a check mark.
Is that all that is analysed?
Which is left? Top or bottom?
I cannot change the channel.
Then I plot spectrum under Analyze.
Is that for the left channel?
On a rather pure tone, the frequency seems correct.
Please teach me.

Some links that will help you:
http://manual.audacityteam.org/o/man/audio_tracks.html
http://manual.audacityteam.org/o/man/sp ... racks.html

hill0093 wrote:I cannot change the channel.

I presume that you are referring to the greyed out tick?
If an item is greyed out, that means that the item that is greyed out does not apply.

hill0093 wrote:Then I plot spectrum under Analyze.
Is that for the left channel?

Plot Spectrum analyzes a mix of the two channels.