Audacity Forum

waxcylinder wrote: ↑

Mon Jun 03, 2019 4:03 pm

It would be jolly nice if Audacity could save a noise profile for you - better still if it could save several named ones - for redeployment later

How would you handle the fact that noise profiles only work for one specific sample rate?

That's interesting DVDdoug. It appears that Microsoft have done a turnaround. Windows XP didn't support 24-bit WAV with "WAVE_FORMAT_EXTENSIBLE". Without 3rd party add-ons it only supported 24-bit WAV with the older "WAVE_FORMAT_PCM" standard. Current versions of Windows Media Pl...

There's a free command line tool called "PipeList" available (32 and 64-bit versions available) from https://live.sysinternals.com/ If you run this tool before launching Audacity, you should see a list similar to this: Pipe Name Instances Max Instances --------- --------- ------------- Ini...

what workarounds would be best? Reduce the sample rate. If you think you can hear above 20 kHz, use a sample rate of 48 kHz. Background: Double blind tests have consistently shown that music recorded at 44.1 kHz sample rate is indistinguishable from the same music, recorded with the same equipment,...

Export the noise sample as 32-bit float.

"24-bit WAV" is not obsolete. They are widely used in professional studios. 24-bit WAV is less widely supported than 16-bit WAV, and you may well find that some "consumer grade" applications don't support 24-bit WAV. To export as 16-bit WAV, select the "Export as WAV" o...

bomber1978 wrote: ↑

Mon Jun 03, 2019 5:05 am

I don't want to change anything else, just simply convert 24/96 to 16/44.1 all at once...

Probably easier to use dedicated format conversion software or Foobar2000.

The sample rate of exported files is set by the "Project Rate" (see: https://manual.audacityteam.org/man/sel ... .html#rate)
You can set the project rate using the "Set Project" command.

The Macro "Export as WAV" command exports as 16-bit WAV.

what I want to do: LPfilter-flip-LPfilter-flip You can do that like this (well actually, the code below does "flip -> filter -> flip -> filter", but same effect): You will probably find it an instructive exercise to look up all of the functions in this code in the Nyquist / XLisp manuals ...

Let me give an example: (setf val 10) (* 2 val) (+ 1 val) Question: What is the "return value" of this code? Let's look at the wrong reasoning first: Line 1: We set VAL to 10 Line 2: We doubled VAL, producing 20 Line 3: We added 1, producing 21 The reason this is wrong is that in line 2, y...