Search found 6404 matches

by Trebor
Sun Dec 22, 2013 5:02 am
Forum: Compiling Audacity
Topic: Changing speed problem
Replies: 4
Views: 5461

Re: Changing speed problem

AndrewM wrote:
After#.png
After#.png (18.73 KiB) Viewed 2353 times
Tracks can be realigned using the "time shift" tool Image ..
.
Image

You may have to zoom-in on the [horizontal] time-scale to get the alignment perfect.
by Trebor
Sat Dec 21, 2013 4:38 am
Forum: Audio Processing
Topic: Is Chris 1.2.6 still the best?
Replies: 22
Views: 4960

Re: Is Chris 1.2.6 still the best?

... I find some sections where Chris's has raised the noise floor, even though the "silence" is starting at -54 dB. (I have the "Floor" set to -28 in Chris). After Chris has run, that "silence" has moved to -47 dB which is NOT good. Upward-compression will Inevitably i...
by Trebor
Tue Dec 17, 2013 5:03 am
Forum: Audio Processing
Topic: Drum in Live Recording - how to reduce volume
Replies: 2
Views: 3321

Re: Drum in Live Recording - how to reduce volume

If the drum beats are louder than everything else, (brief loud peaks poking out of the envelope) they can be reduced to the same amplitude as everything else using a limiter , (which is a compressor with a very fast response time ).
by Trebor
Sat Dec 14, 2013 2:51 pm
Forum: Audio Processing
Topic: Circle waves
Replies: 11
Views: 5275

Re: Circle waves

Koz recently pointed out to me that something similar can be achieved using the "leveller"...
upper trace is leveller on ''heaviest'' applied x3 to sine wave.png
Leveller used three times on "heaviest" setting
upper trace is leveller on ''heaviest'' applied x3 to sine wave.png (21.73 KiB) Viewed 1442 times
Which could be even nearer "goldylox".
by Trebor
Fri Dec 13, 2013 9:48 am
Forum: Audio Processing
Topic: Exponential compression via nyquist ?
Replies: 5
Views: 4258

Re: Exponential compression via nyquist ?

There are several functions to convert between linear and logarithmic. The simplest are 'linear-to-db' and 'db-to-linear'. Yes those are the ones I've seen in nyquist code. What gave me the idea was I that I was faced with trying to correct recording of a keyboard where the wrong type of swell-peda...
by Trebor
Fri Dec 13, 2013 5:54 am
Forum: Audio Processing
Topic: Exponential compression via nyquist ?
Replies: 5
Views: 4258

Exponential compression via nyquist ?

Is it possible to compress the waveform exponentially so it looks like when the vertical scale is in dB ? ... logarithmic compression demo .gif i.e. the amount of compression increases exponentially with the amplitude of the waveform. Just a notion , I'm not sure how such a waveform will sound , oth...
by Trebor
Sun Dec 08, 2013 1:04 am
Forum: Audio Processing
Topic: emulating holoacoustic(3d sound)
Replies: 2
Views: 3283

Re: emulating holoacoustic(3d sound)

There's an app for that ... http://forum.audacityteam.org/viewtopic ... 02#p220702

a similar question (with other possible solutions) ... http://forum.audacityteam.org/viewtopic ... 52&t=74117
by Trebor
Fri Dec 06, 2013 2:54 pm
Forum: Audio Processing
Topic: Is Chris 1.2.6 still the best?
Replies: 22
Views: 4960

Re: Is Chris 1.2.6 still the best?

... the current one has the minor flaw that it adds noise to the beginning/end of my tracks, and I just snip it out, no big deal. In theory someone may have taken his code base and figured out a way to remove that one minor issue OR found another add-in that works as well, but eliminates that final...
by Trebor
Thu Dec 05, 2013 2:11 am
Forum: macOS
Topic: Can microphone instability be compensated in Audiacity?
Replies: 13
Views: 2438

Re: Can microphone instability be compensated in Audiacity?

... I would not hold out much hope for automatic correction. OK what about this method for automatic correction : use the level of an artifact , (e.g. a mains-hum harmonic), as a reference and expanding so it is constant throughout the recording, ( the assumption being it was constant amplitude and...
by Trebor
Thu Dec 05, 2013 1:42 am
Forum: macOS
Topic: Can microphone instability be compensated in Audiacity?
Replies: 13
Views: 2438

Re: Can microphone instability be compensated in Audiacity?

You can listen to one of the two raw recordings here: https://dl.dropboxusercontent.com/u/1904616/Sieglinde%2030.11.WAV The conspicuous defect I can hear on that dropbox file is clicking (due to skipping ) which is fixable using " repair " on each click ... ''Sieglinde 30'' excerpt, befor...