Search found 59476 matches

by steve
Wed Jun 20, 2012 2:26 am
Forum: Recording Techniques
Topic: Latency Issues
Replies: 1
Views: 1284

Re: Latency Issues

Also, this is not new to Audacity 2.0. I've had the same issue in previous versions of Audacity. And you'll get the same problem with any other recording software. Sound cards measure the analogue input signal and output the level of that signal as a number (the sample value). They do this thousand...
by steve
Wed Jun 20, 2012 2:06 am
Forum: Nyquist
Topic: Output text to file
Replies: 66
Views: 21688

Re: Output text to file

Here are the functions I currently work with: (defun user-home-directory () (or (get-env "HOME") (get-env "UserProfile"))) (print (user-home-directory)) => "/home/edgar" [on Linux] (print (user-home-directory)) => "C:\Dokumente und Einstellungen\edgar" [on Wi...
by steve
Wed Jun 20, 2012 12:57 am
Forum: Nyquist
Topic: brick wall low pass filtering
Replies: 2
Views: 5228

Re: brick wall low pass filtering

The audio show has to go up to 19 KHz (stereo pilot tone) and drop dead. Nothing past that and it usually means you have to start drooping at 17KHz in order to get a good dip at 19. That's similar to using the second bit of code: (lowpass8 (lowpass8 s 17000) 17000) This effectively gives you a 16th...
by steve
Wed Jun 20, 2012 12:12 am
Forum: Audio Processing
Topic: Noise Removal 2.0
Replies: 6
Views: 5804

Re: Noise Removal 2.0

OK, count me among those who feel completely ham-handed with Audacity's newer, fancier versions of the NR tool... I first started using Audacity in 2005, and really — for the most common types of annoyances I'd encounter, the old NR algorithm was sufficient to clean up the track. Just to be safe I'...
by steve
Tue Jun 19, 2012 11:17 pm
Forum: Windows
Topic: Determine decibel levels at different frequencies.
Replies: 8
Views: 1930

Re: Determine decibel levels at different frequencies.

The reference level for Plot Spectrum is the level of a 0 dB sine tone. If you generate a full-scale (full height of the audio track) sine wave, it will show as 0 dB in Plot Spectrum. That is the reference, so all signals within the normal operating range will be below 0 dB, hence the dB scale showi...
by steve
Tue Jun 19, 2012 11:00 pm
Forum: Recording Techniques
Topic: concatenation
Replies: 6
Views: 4511

Re: concatenation

Audacity needs an append command to concatenate small files into a large one. Is there any particular reason why this has been posted in the French forum? Also, it would be better to log onto the forum using your real IP address as using a proxy IP triggers the forum spam control filters which coul...
by steve
Tue Jun 19, 2012 10:53 pm
Forum: Recording Techniques
Topic: concatenation
Replies: 6
Views: 4511

Re: concatenation

There is a plug-in available here: http://forum.audacityteam.org/viewtopic ... 42&t=59528
Please read the topic for instructions and limitations of this plug-in.
by steve
Tue Jun 19, 2012 7:35 pm
Forum: Nyquist
Topic: brick wall low pass filtering
Replies: 2
Views: 5228

brick wall low pass filtering

It is sometimes necessary to use very steep low pass filters, for example for preventing aliasing when resampling or pitch shifting. Nyquist provides a fairly steep 8th order low pass filter (48 dB/Oct) with: (lowpass8 sound frequency) If this is not steep enough for a particular application, the fi...
by steve
Tue Jun 19, 2012 5:19 pm
Forum: Français
Topic: yellow tool and audacity are compatible ,
Replies: 1
Views: 598

Re: yellow tool and audacity are compatible ,

"Independence FREE" is a VST instrument. Audacity does not support VST instruments.