Search found 59476 matches

by steve
Tue Dec 08, 2015 9:08 am
Forum: Nyquist
Topic: Complete elimination of audio content of 0Hz to 15000Hz
Replies: 8
Views: 1791

Re: Complete elimination of audio content of 0Hz to 15000Hz

The theoretical absolute maximum frequency possible is half the sample rate (see: Nyquist frequency ). In practice, the highest possible frequency is a little less than half the sample rate, so, as can be seen in your posted screenshot, the upper frequency limit of your audio sample is a little unde...
by steve
Tue Dec 08, 2015 8:33 am
Forum: Nyquist
Topic: Complete elimination of audio content of 0Hz to 15000Hz
Replies: 8
Views: 1791

Re: Complete elimination of audio content of 0Hz to 15000Hz

MGTHEBOSS wrote:What changes do I need to make in this code to apply it on a Mono track which has the attached spectrum?
What is the sample rate of that track?
by steve
Tue Dec 08, 2015 2:46 am
Forum: Windows
Topic: Syncing Audacity and Dxtory
Replies: 2
Views: 251

Re: Syncing Audacity and Dxtory

The Dxtory forum is here: http://forum.exkode.com/
Audacity doesn't have any way to synchronise with other software.
by steve
Tue Dec 08, 2015 2:41 am
Forum: macOS
Topic: New user, can't get started
Replies: 1
Views: 206

Re: New user, can't get started

The current version of Audacity is 2.1.1, which you can get here: http://web.audacityteam.org/download/mac What sort of cassette player is it? How is it connected to your computer? If it is a USB cassette player, it should be connected to the computer before you launch Audacity, otherwise you will n...
by steve
Tue Dec 08, 2015 2:36 am
Forum: General Audio Programming
Topic: Overglyph Function
Replies: 3
Views: 2075

Re: Overglyph Function

The "glyphs" are the various elements that make up the label graphic, such as the circle in the middle of the stem (the "drag handle center"), the triangles either side of the circle (the left/right "drag handles"), and so on.
by steve
Mon Dec 07, 2015 5:01 pm
Forum: Making Music with Audacity
Topic: Compatible USB Sound Card for use with Audacity
Replies: 6
Views: 1987

Re: Compatible USB Sound Card for use with Audacity

The current version of Audacity is 2.1.1. It's not much different from 2.0.6 but has bug fixes and some enhancements that you may find useful. It is available here: http://web.audacityteam.org/download/ I have a simple question that needs a simple answer: Not a simple question. It depends what you w...
by steve
Mon Dec 07, 2015 2:36 pm
Forum: Nyquist
Topic: Complete elimination of audio content of 0Hz to 15000Hz
Replies: 8
Views: 1791

Re: Complete elimination of audio content of 0Hz to 15000Hz

My objective is the complete elimination of audio content in the 0Hz to 15000Hz range using Nyquist, keeping the content above frequency 15000Hz intact. It must be perfect, not like using a High Pass Filter with Cutoff frequency 15000Hz and Rolloff 48dB. You need a "brick-wall filter". Un...
by steve
Mon Dec 07, 2015 2:22 pm
Forum: Audio Processing
Topic: Marker export batch processing
Replies: 1
Views: 490

Re: Marker export batch processing

bastou wrote:On Mac, we have to to indicate and add .txt to the name, before exporting.
See: http://forum.audacityteam.org/viewtopic ... 47&t=89036

Anything here help? http://computers.tutsplus.com/tutorials ... -mac-46999
by steve
Mon Dec 07, 2015 2:19 pm
Forum: macOS
Topic: No .txt extension when exporting Markers & Default folder
Replies: 3
Views: 344

Re: No .txt extension when exporting Markers & Default folde

I don't use Mac OS X. Does Mac OS X require a .txt filename extension? (on Linux, which is also Unix based, text files don't need to have a .txt extension).
by steve
Mon Dec 07, 2015 2:14 pm
Forum: Nyquist
Topic: tachometer analysis via nyquist
Replies: 8
Views: 1614

Re: tachometer analysis via nyquist

In this example you will notice lots of false positives on an unconditioned signal due to noise between the pulses: (setf step 2) (let* ((sig (snd-avg *track* step step op-average)) (ln (truncate len)) (data (snd-fetch-array sig ln ln)) (labels ()) (oldval -1)) (do* ((val (aref data 0)(aref data cou...