Search found 9 matches
- Wed Jan 21, 2015 6:05 am
- Forum: Feature Request Archive
- Topic: Suggestion (Bandpass Filter and Custom FFT Filter)
- Replies: 61
- Views: 9304
Re: Suggestion (Bandpass Filter and Custom FFT Filter)
Actually the center frequency should never be the logarithmic center. The center of a filter who's upper bound is 10000Hz, and who's lower bound is 100Hz, should NEVER be 1000Hz. At least not for scientific use. Maybe in the music industry, using a logarithmic center frequency is useful. However in ...
- Mon Jan 19, 2015 3:58 am
- Forum: Feature Request Archive
- Topic: Suggestion (Bandpass Filter and Custom FFT Filter)
- Replies: 61
- Views: 9304
Re: Suggestion (Bandpass Filter and Custom FFT Filter)
Currently, when you select a band (say 100 Hz to 10000 Hz in this example), it uses the logarithmic center, REGARDLESS of which mode you are using for spectrogram. The center frequency is thus 1000 Hz. This should be the selection method ONLY when using the logarithmic spectrogram. When in the linea...
- Sat Jan 17, 2015 4:21 am
- Forum: Feature Request Archive
- Topic: Suggestion (Bandpass Filter and Custom FFT Filter)
- Replies: 61
- Views: 9304
Re: Suggestion (Bandpass Filter and Custom FFT Filter)
I notice a problem in frequency selection in spectrogram in version 2.1.0. When you using the linear frequency display, for selecting the spectrum, it doesn't have the center frequency in the center. Instead it has it below the center. Turns out that in logarithmic frequency display, this frequency ...
- Fri Jan 16, 2015 11:47 am
- Forum: Feature Request Archive
- Topic: Suggestion (Bandpass Filter and Custom FFT Filter)
- Replies: 61
- Views: 9304
Re: Suggestion (Bandpass Filter and Custom FFT Filter)
I just tried a nightly build and I'm not sure exactly what the spectral filters do. I can tell they change the part of the spectrum I've selected, but I don't know exactly what they do. Any help on this would be nice.
- Fri Jan 16, 2015 3:15 am
- Forum: Feature Request Archive
- Topic: Suggestion (Bandpass Filter and Custom FFT Filter)
- Replies: 61
- Views: 9304
Re: Suggestion (Bandpass Filter and Custom FFT Filter)
Version 2.1.0? The latest publicly released version is 2.0.6. Where can I get version 2.1.0?Gale Andrews wrote:2.1.0
- Mon Jan 12, 2015 7:40 am
- Forum: Feature Request Archive
- Topic: Suggestion (Bandpass Filter and Custom FFT Filter)
- Replies: 61
- Views: 9304
Re: Suggestion (Bandpass Filter and Custom FFT Filter)
For one serious shortcoming, the input signal and the output signal are different, nearly always. Audacity converts a performance Import into its own very high quality internal sound format and then, when you're done, converts it to your Export format. Even if you do little or nothing to it, the tw...
- Mon Jan 12, 2015 1:06 am
- Forum: Feature Request Archive
- Topic: Suggestion (Bandpass Filter and Custom FFT Filter)
- Replies: 61
- Views: 9304
Re: Suggestion (Bandpass Filter and Custom FFT Filter)
I shouldn't have to simulate a bandpass filter by using a highpass and lowpass filter It's not a "simulation". Applying high-pass and low-pass filters in series IS a band-pass filter. You may also be interested in this plugin: http://forum.audacityteam.org/viewtopic.php?p=204507#p204507 And the Equ...
- Sun Jan 11, 2015 10:15 pm
- Forum: Feature Request Archive
- Topic: Suggestion (Bandpass Filter and Custom FFT Filter)
- Replies: 61
- Views: 9304
Re: Suggestion (Bandpass Filter and Custom FFT Filter)
A notch filter is a particular type of band-stop filter in which the stop band is very narrow. http://en.wikipedia.org/wiki/Band-stop_filter the makers of Audacity decided to leave out the bandpass filter. You can perform band-pass filtering by applying a high-pass filter with a low corner frequenc...
- Sun Jan 11, 2015 9:49 pm
- Forum: Feature Request Archive
- Topic: Suggestion (Bandpass Filter and Custom FFT Filter)
- Replies: 61
- Views: 9304
Suggestion (Bandpass Filter and Custom FFT Filter)
Of the 4 main types of filters that exist, Audacity only implements 4 of them, bandstop (called Notch Filter in Audacity), highpass, and lowpass. I don't know why, but for some reason, the makers of Audacity decided to leave out the bandpass filter. I don't know much about music industry sound proce...