If there are frequencies above 20kHz present in the file then it is likely that it has never been compressed.
The very highest quality MP3s (320 kbps) are limited to a maximum frequency of 20 kHz.
Lower quality MP3s are generally limited with a lower cut-off.
Search found 59476 matches
- Thu Mar 29, 2012 2:50 am
- Forum: Windows
- Topic: Test if .wav file was ever an mp3
- Replies: 11
- Views: 12066
- Thu Mar 29, 2012 2:24 am
- Forum: New Plug-Ins
- Topic: Simple Wave Folder
- Replies: 2
- Views: 2517
Re: Simple Wave Folder
Note that unlike a real diode-based wave folder, any peaks that pass the opposite threshold as a result of a fold will not be folded back again. I suppose one way to implement that would be to iterate the process (truncate (/ 0.5 p-thresh)) times. Another limitation which is a lot more difficult to...
- Thu Mar 29, 2012 1:07 am
- Forum: New Plug-Ins
- Topic: Rectivert - Rectification and Inversion
- Replies: 13
- Views: 8826
Re: Rectivert - Rectification and Inversion
Attached, just as an example, is an adaptation of your plug-in which includes the suggestions from my previous post. This is not necessarily "the best way" to code it, it's just how I would code it ;) (For very good examples of Nyquist coding, look at some of the code from Edgar-rft and Ro...
- Thu Mar 29, 2012 12:42 am
- Forum: New Plug-Ins
- Topic: Rectivert - Rectification and Inversion
- Replies: 13
- Views: 8826
Re: Rectivert - Rectification and Inversion
A nice neat little tool :) Some feedback that I hope you will find useful: The multiple choice widget was introduced in "version 3" plug-ins, so it should be ;version 3 rather than ;version 1. The ;info line contains: Performs seperate half/full wave rectification and/or phase inversion on...
- Wed Mar 28, 2012 10:40 pm
- Forum: macOS
- Topic: interface input activation
- Replies: 4
- Views: 2461
Re: interface input activation
Audacity can only record from one device at a time. However, on Macs (or at least on some Macs) it is possible to create an "aggregate device" which in effect combines multiple sound cards into one virtual device. Audacity can then use that aggregate device as the (one) recording device. (...
- Wed Mar 28, 2012 10:30 pm
- Forum: General Audio Programming
- Topic: build a context menu
- Replies: 12
- Views: 6099
Re: build a context menu
Are your patches publicly available?Bquentin wrote:I finished the context menu
- Wed Mar 28, 2012 10:28 pm
- Forum: Windows
- Topic: How do I open an Audacity file that own't open after I renam
- Replies: 12
- Views: 2836
Re: How do I open an Audacity file that own't open after I r
The .AUP file should be called:
1a.aup
(as it is now)
The _data folder should be called:
1a_data
The 1a.aup file and the 1a_data folder must both be in the same directory.
1a.aup
(as it is now)
The _data folder should be called:
1a_data
The 1a.aup file and the 1a_data folder must both be in the same directory.
Re: Artifacts In Recorded Tracks (Sample Included)
Just out of interest, how many megabytes-per-second am I looking at during a 48000Hz/24 Bit recording? 24 bit = 3 bytes Stereo = 2 channels of samples 48kHz 24 bit stereo = 3 x 2 x 48 kB per second. That does not sound like much, but the important point is that it must be continuous sustained throu...
- Wed Mar 28, 2012 10:07 pm
- Forum: Windows
- Topic: Audacity 2.0 not working on Windows 7?
- Replies: 10
- Views: 3165
Re: Audacity 2.0 not working on Windows 7?
I got that error message again... Exactly what message was that? (we can't see the error message). Clearly, my drivers are not the issue From the information that we have so far I would not jump to that conclusion. It is perhaps less likely to be a driver issue. What sort of sound card do you have?...
- Wed Mar 28, 2012 9:59 pm
- Forum: Windows
- Topic: How to use plug ins
- Replies: 7
- Views: 3284
Re: How to use plug ins
What sort of plug-in is "Ambience"?
Do you have a link to where it came from so that I can have a look?
Did you follow the instructions in my previous post?
If it is a VST effect, did you follow the link in my previous post and follow those instructions?
Do you have a link to where it came from so that I can have a look?
Did you follow the instructions in my previous post?
If it is a VST effect, did you follow the link in my previous post and follow those instructions?