data folders larger when stereo tracks to mono why?

Help for Audacity on Windows.
Forum rules
ImageThis forum is for Audacity on Windows.
Please state which version of Windows you are using,
and the exact three-section version number of Audacity from "Help menu > About Audacity".


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.
steve
Site Admin
Posts: 81627
Joined: Sat Dec 01, 2007 11:43 am
Operating System: Linux *buntu

Re: data folders larger when stereo tracks to mono why?

Post by steve » Thu Jan 05, 2017 7:26 pm

frew_frew wrote:Each of my three stereo tracks consists of not one continuous recording, but rather 30 second recordings
copied and pasted numerous times to make up a 7 min tracks. So audacity is probably just reusing those
clips, not having separate data for each clip...
Yes, Audacity will reuse the data from the original clip until the clip or copy is modified.
For example, if you record 5 seconds, mono, 32-bit float, 44100 Hz, that will produce one blockfile of about 1 MB.
If you repeat that 5 second clip 9 times, either by copy and pasting or with the "Repeat" effect, the project data will still contain one blockfile of about 1 MB.
If you then amplify (any) one of the 5 second clips, the project data will then contain two blockfiles of about 1 MB each (the original one and a new one for the amplified clip).
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)

frew_frew
Posts: 76
Joined: Mon Jan 02, 2017 5:55 pm
Operating System: Windows 10

Re: data folders larger when stereo tracks to mono why?

Post by frew_frew » Thu Jan 05, 2017 7:46 pm

Excellent, thanks so much.

frew

Gale Andrews
Quality Assurance
Posts: 41761
Joined: Fri Jul 27, 2007 12:02 am
Operating System: Windows 10

Re: data folders larger when stereo tracks to mono why?

Post by Gale Andrews » Fri Jan 06, 2017 3:56 pm

@frew_few: Please use the Quote button in the message composition window to quote what someone said, or make the quotes more obvious such as

>>>>>>> Steve wrote: We need more information

Otherwise the posts can get very confusing.


Gale
________________________________________FOR INSTANT HELP: (Click on Link below)
* * * * * Tips * * * * * Tutorials * * * * * Quick Start Guide * * * * * Audacity Manual

steve
Site Admin
Posts: 81627
Joined: Sat Dec 01, 2007 11:43 am
Operating System: Linux *buntu

Re: data folders larger when stereo tracks to mono why?

Post by steve » Fri Jan 06, 2017 4:03 pm

Gale Andrews wrote:@frew_few: Please use the Quote button in the message composition window to quote what someone said
Just to add, a really easy way to quote a previous post:

1) Click the "Reply" button to open the reply edit box,
2) Scroll the page to see the text that you want to quote,
3) Select the text that you want to quote using your mouse / pointing device,
4) Click the "QUOTE" button in the top right corner of the post that you quoting.

The forum software will then copy the selected text into your new post, and place "quote tags" around it that look like this:

Code: Select all

[quote="Gale Andrews"]@frew_few: Please use the Quote button in the message composition window to quote what someone said,[/quote]
5) Preview your post to check that it is all correct before submitting.
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)

Gale Andrews
Quality Assurance
Posts: 41761
Joined: Fri Jul 27, 2007 12:02 am
Operating System: Windows 10

Re: data folders larger when stereo tracks to mono why?

Post by Gale Andrews » Fri Jan 06, 2017 4:22 pm

steve wrote:
Gale Andrews wrote:@frew_few: Please use the Quote button in the message composition window to quote what someone said
Just to add, a really easy way to quote a previous post:

1) Click the "Reply" button to open the reply edit box,
2) Scroll the page to see the text that you want to quote,
3) Select the text that you want to quote using your mouse / pointing device,
4) Click the "QUOTE" button in the top right corner of the post that you quoting.

The forum software will then copy the selected text into your new post, and place "quote tags" around it that look like this:

Code: Select all

[quote="Gale Andrews"]@frew_few: Please use the Quote button in the message composition window to quote what someone said,[/quote]
5) Preview your post to check that it is all correct before submitting.
I can't actually get that to work here unless I use the "Quote" button and select the text to be quoted in the message editing window.

If I use the "Post Reply" button the message editing window has no text, and selected text outside that window is not included inside the Quote tags.


Gale
________________________________________FOR INSTANT HELP: (Click on Link below)
* * * * * Tips * * * * * Tutorials * * * * * Quick Start Guide * * * * * Audacity Manual

steve
Site Admin
Posts: 81627
Joined: Sat Dec 01, 2007 11:43 am
Operating System: Linux *buntu

Re: data folders larger when stereo tracks to mono why?

Post by steve » Fri Jan 06, 2017 4:37 pm

Gale Andrews wrote:I can't actually get that to work here unless I use the "Quote" button and select the text to be quoted in the message editing window.
Are you clicking the right "QUOTE" button?

There's a "Quote" button in the row of buttons above the message compose box. That just adds (empty) quote tags.

There's also a "QUOTE" (upper case) button in the top right corner of each previous post - that's the one that I'm referring to. In this post I selected your text in your post, then clicked the "QUOTE" button at the top right of your post.
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)

Gale Andrews
Quality Assurance
Posts: 41761
Joined: Fri Jul 27, 2007 12:02 am
Operating System: Windows 10

Re: data folders larger when stereo tracks to mono why?

Post by Gale Andrews » Fri Jan 06, 2017 4:58 pm

frew_frew wrote:
assuming the audio in each track is different
sorry, not sure what that's referring to
I was thinking of Audacity reusing audio data that is the same, as discussed recently, so that if you had one track then copy/pasted that to new tracks (or duplicated) to make eight tracks, this takes no more disk space than one track.

If for example you have two stereo tracks using identical data in all four channels that only requires two block files, selecting both stereo tracks and using Stereo Track to Mono, leaving two mono tracks, does in fact double space usage to four block files after closing the project.

And if for example one stereo track with unique data and no empty space takes four block files, Stereo Track to Mono will halve space usage to two block files after closing the project.

These effects on space usage are because Stereo Track to Mono renders the data.

It is certainly a complex subject.


Gale
________________________________________FOR INSTANT HELP: (Click on Link below)
* * * * * Tips * * * * * Tutorials * * * * * Quick Start Guide * * * * * Audacity Manual

Gale Andrews
Quality Assurance
Posts: 41761
Joined: Fri Jul 27, 2007 12:02 am
Operating System: Windows 10

Re: data folders larger when stereo tracks to mono why?

Post by Gale Andrews » Fri Jan 06, 2017 5:02 pm

steve wrote:
Gale Andrews wrote:I can't actually get that to work here unless I use the "Quote" button and select the text to be quoted in the message editing window.
Are you clicking the right "QUOTE" button?

There's a "Quote" button in the row of buttons above the message compose box. That just adds (empty) quote tags.

There's also a "QUOTE" (upper case) button in the top right corner of each previous post - that's the one that I'm referring to.
Yes that is the QUOTE button I mean that makes it work (if I select the text in the message editing window then press the "Quote" button above the message window).

But you said
steve wrote:Click the "Reply" button to open the reply edit box
I assumed by that you meant "POST REPLY" (bottom left) which doesn't work (because there is no text in the message editing window).


Gale
________________________________________FOR INSTANT HELP: (Click on Link below)
* * * * * Tips * * * * * Tutorials * * * * * Quick Start Guide * * * * * Audacity Manual

frew_frew
Posts: 76
Joined: Mon Jan 02, 2017 5:55 pm
Operating System: Windows 10

Re: data folders larger when stereo tracks to mono why?

Post by frew_frew » Sat Jan 07, 2017 4:40 am

Gale Andrews wrote:@frew_few: Please use the Quote button in the message composition window to quote what someone said, or make the quotes more obvious such as

>>>>>>> Steve wrote: We need more information

Otherwise the posts can get very confusing.
Yes, I see what you mean. Thanks for the heads up about that.
steve wrote:Just to add, a really easy way to quote a previous post:

1) Click the "Reply" button to open the reply edit box,
2) Scroll the page to see the text that you want to quote,
3) Select the text that you want to quote using your mouse / pointing device,
4) Click the "QUOTE" button in the top right corner of the post that you quoting.

The forum software will then copy the selected text into your new post, and place "quote tags" around it that look like this:

Code: Select all
Gale Andrews wrote:@frew_few: Please use the Quote button in the message composition window to quote what someone said,


5) Preview your post to check that it is all correct before submitting.
Okay, thanks. Checking that technique now.
I see that you're referring to the "POSTREPLY" button at the bottom of the thread page.
And by the scrolling you refer to the scrollable TOPIC REVIEW area below the POST A REPLY area.

Very nice.

Thanks again to you both for your kind and thorough help with this great program.

frew

frew_frew
Posts: 76
Joined: Mon Jan 02, 2017 5:55 pm
Operating System: Windows 10

Re: data folders larger when stereo tracks to mono why?

Post by frew_frew » Sat Jan 07, 2017 4:54 am

Gale Andrews wrote:
frew_frew wrote:
assuming the audio in each track is different
sorry, not sure what that's referring to
I was thinking of Audacity reusing audio data that is the same, as discussed recently, so that if you had one track then copy/pasted that to new tracks (or duplicated) to make eight tracks, this takes no more disk space than one track.
I see what you were referring to, now that I see how Audacity reuses clips that have
not been rendered in any way in tracks.

It's nice that Audacity saves hard drive space when a clip is copied and pasted.
Thanks for going over that.

frew

Post Reply