Search found 59476 matches

by steve
Sun Apr 13, 2014 5:31 pm
Forum: Audio Processing
Topic: Bit perfect editing
Replies: 18
Views: 3956

Re: Bit perfect editing

Can you be more specific? Sorry, no. I don't use GP3 format and have not used any of those programs, but if you want "lossless" editing of a file that is in a "lossy" format, you will need a program that can perform edits without decoding / re-encoding the file. Audacity can't d...
by steve
Sun Apr 13, 2014 1:12 pm
Forum: Audiobook Production
Topic: Manipulating Decibels
Replies: 119
Views: 22045

Re: Manipulating Decibels

On closer examination, there are several places where the audio is clipped. If you enable "View > Show Clipping" (http://manual.audacityteam.org/o/man/view_menu.html#show_clipping) you will see red vertical lines where clipping has occurred. If the audio in the Audacity project is over 0 d...
by steve
Sun Apr 13, 2014 1:00 pm
Forum: Audiobook Production
Topic: Manipulating Decibels
Replies: 119
Views: 22045

Re: Manipulating Decibels

Listening to the original WAV recording - generally the recording quality is very good, but it is too "hot" (the peak level is too high). At about 2minutes 52 seconds: "That while a resting place may seem ideal to you..." firsttrack000.png Note the clipping on the negative-going ...
by steve
Sun Apr 13, 2014 12:37 pm
Forum: Audiobook Production
Topic: Manipulating Decibels
Replies: 119
Views: 22045

Re: Manipulating Decibels

Steve's narrative dialog with them seems to think "hovering around -3" is good enough. I The original text on the ACX website said: with peaks hovering around -3dB I asked for clarification and was told: What we are looking for is no significantly louder peaks than -3dBFS. Due to our need...
by steve
Sun Apr 13, 2014 9:51 am
Forum: Audio Processing
Topic: Bit perfect editing
Replies: 18
Views: 3956

Re: Bit perfect editing

The format is MP4 embedded in 3GP. Do you know of a bit perfect MP4 editor? Search Google for "3gp splitter". Take care when downloading and installing - it is common for "free" downloads to either not really be free, or to be bundled with useless or even dangerous other softwar...
by steve
Sat Apr 12, 2014 6:11 pm
Forum: Audio Processing
Topic: Bit perfect editing
Replies: 18
Views: 3956

Re: Bit perfect editing

Editing an Audacity project is always "bit perfect". What may not bit perfect is converting between Audacity projects and audio file formats. Importing or exporting 32 bit float WAV format is completely lossless but the file size is huge. Importing / Exporting 16 bit FLAC format is extreme...
by steve
Fri Apr 11, 2014 9:44 am
Forum: General Audio Programming
Topic: Need pointers on adding feature to search pattern
Replies: 20
Views: 14174

Re: Need pointers on adding feature to search pattern

Which version of Audacity are you using? (look in "Help > About Audacity"). The current version is 2.0.5 which is available here: http://audacityteam.org/download/
by steve
Fri Apr 11, 2014 8:27 am
Forum: General Audio Programming
Topic: Need pointers on adding feature to search pattern
Replies: 20
Views: 14174

Re: Need pointers on adding feature to search pattern

The Nyquist Prompt is an "Effect" so you can set a keyboard shortcut in the same way as other effects. http://manual.audacityteam.org/o/man/keyboard_preferences.html but probably better would be to make the code as a plug-in http://wiki.audacityteam.org/wiki/Nyquist_Plug-ins_Reference#Nyqu...
by steve
Fri Apr 11, 2014 1:46 am
Forum: Audio Processing
Topic: Help with auto duck please?
Replies: 7
Views: 2435

Re: Help with auto duck please?

I am not completely understanding what the effect of the threshold setting is here. It seems more complex than stated in the Manual: I've not given it much thought before - I tend to set it by eye rather than a precise measurement, but it looks like it is triggered by the rms level rather than the ...
by steve
Fri Apr 11, 2014 12:21 am
Forum: Feature Request Archive
Topic: Auto Profile for Noise Reduction — Proposal
Replies: 13
Views: 6435

Re: Auto Profile for Noise Reduction — Proposal

Perhaps we want a warning as in Click Removal that the selection is too short? It's a slightly different case from the click removal issue. For click removal, the issue was that if the selection was too short it would do "nothing". In the case of Noise removal, even a single sample will d...