Search found 1730 matches

by Robert J. H.
Mon Sep 01, 2014 7:02 pm
Forum: Audiobook Production
Topic: How do I set Audacity to meet exact requirements?
Replies: 7
Views: 5120

Re: How do I set Audacity to meet exact requirements?

You can measure the rms value with the contrast tool (Analyze menu)
Librivox has additionally a analyse tool of its own to run on the exported mp3.
by Robert J. H.
Sat Aug 30, 2014 8:24 am
Forum: Audiobook Production
Topic: Meeting ACX Requirements w/ Audacity
Replies: 129
Views: 29423

Re: Meeting ACX Requirements w/ Audacity

Limiting by 3 to 5 dB is probably the best compromise between energy preservation and distortion. I know this immediately gives everyone a bad taste, but how different is this from Effect > Leveler? I was able to get remarkably close to the required density of sound with Effect > Leveler: Moderate....
by Robert J. H.
Fri Aug 29, 2014 10:59 pm
Forum: Feature Request Archive
Topic: Consistent interface for filter effects
Replies: 3
Views: 1400

Re: Consistent interface for filter effects

Those are not the same filters. The Notch filter is of second order only. Hp and Lp go up to order 8 and the first field expresses that. Sure, but each has a frequency slider and there is inconsistency in the user interface. Most users don't care about the math, and usually I don't either. :-) It's...
by Robert J. H.
Fri Aug 29, 2014 6:02 pm
Forum: Feature Request Archive
Topic: Consistent interface for filter effects
Replies: 3
Views: 1400

Re: Consistent interface for filter effects

For High and Lowpass filter dialogs, the frequency input field is not first in tab order. For notch filter, it is (which I find more convenient personally). Would it be nicer to make them consistent? It's a simple matter of Nyquist programming of course, so I can easily do it for myself if I prefer...
by Robert J. H.
Fri Aug 29, 2014 7:34 am
Forum: Audio Processing
Topic: Remove difference between tracks
Replies: 4
Views: 2066

Re: Remove difference between tracks

What format do the songs have? Two times mono or stereo? Both .flac and stereo You can try my tool in http://forum.audacityteam.org/viewtopic.php?f=42&t=73313#p216689 to isolate the center. In order to do it properly, you have to rearrange the two files. Split them into mono. Then, make a stere...
by Robert J. H.
Fri Aug 29, 2014 7:06 am
Forum: Audiobook Production
Topic: Meeting ACX Requirements w/ Audacity
Replies: 129
Views: 29423

Re: Meeting ACX Requirements w/ Audacity

Let me ask something oblique. What tools and how were they used to determine the number of times Steve's Limiter was applied, and why didn't you just crank the severity of the limiting up and apply it once? Or am I missing something important? Koz I didn't want the soft knee go down into the main s...
by Robert J. H.
Thu Aug 28, 2014 11:01 pm
Forum: Audio Processing
Topic: Remove difference between tracks
Replies: 4
Views: 2066

Re: Remove difference between tracks

What format do the songs have?
Two times mono or stereo?
by Robert J. H.
Thu Aug 28, 2014 8:57 pm
Forum: Windows
Topic: How do I drop low frequency?
Replies: 6
Views: 1015

Re: How do I drop low frequency?

This might not really help you.
Some time ago, I wrote a Nyquist code snippet to emulate an explosion in a mine.
cave-explosion.wav
(632.12 KiB) Downloaded 34 times
I would probably use a long chain of echoes since the thunder bounces off all the cave's walls.
by Robert J. H.
Thu Aug 28, 2014 8:17 pm
Forum: Audiobook Production
Topic: Meeting ACX Requirements w/ Audacity
Replies: 129
Views: 29423

Re: Meeting ACX Requirements w/ Audacity

I still wonder where those infernal clicks come from, it's presumably a property of those snow balls. I'm not hearing anything. Did you hear problems on Ian's work? Will the work pass noise without removing them? I noticed a large bump in the Room Tone analysis around 90Hz and Steve's Voice doesn't...
by Robert J. H.
Wed Aug 27, 2014 11:39 pm
Forum: Audiobook Production
Topic: Meeting ACX Requirements w/ Audacity
Replies: 129
Views: 29423

Re: Meeting ACX Requirements w/ Audacity

Here's the mp3 of the corrected "15 take2": https://www.dropbox.com/sh/cpvrlgoab3q0h8n/AAAfKInq5gbYaTBWh-Cqr17sa?dl=0 -3 dB peak -21.5 dB Rms Biggest problems were: - Clicks (I used Paul's de-clicker, default settings + some heavier settings for certain passages) - pops (highpass filter -1...