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by steve
Wed Jun 12, 2019 2:12 am
Forum: Audiobook Production
Topic: How does ACX check evaluate noise level?
Replies: 12
Views: 996

Re: How does ACX check evaluate noise level?

kozikowski wrote:
Wed Jun 12, 2019 1:49 am
Can we assume that's to keep it from responding to DC Offset?
Yes I think so.
by steve
Tue Jun 11, 2019 11:42 pm
Forum: Audiobook Production
Topic: How does ACX check evaluate noise level?
Replies: 12
Views: 996

Re: How does ACX check evaluate noise level?

kozikowski wrote:
Tue Jun 11, 2019 10:50 pm
The code at ACX?
The "Acx-check.ny" code: https://wiki.audacityteam.org/wiki/Nyqu ... #ACX_Check
by steve
Tue Jun 11, 2019 10:44 pm
Forum: Audiobook Production
Topic: How does ACX check evaluate noise level?
Replies: 12
Views: 996

Re: How does ACX check evaluate noise level?

kozikowski wrote:
Tue Jun 11, 2019 10:25 pm
the noise measurement is not conditioned
Actually, I've just checked the code and it is "conditioned" a little. It is passed through a 10 Hz high pass filter prior to measuring the noise level.
So the noise level will include at calls, but will largely ignore Earthquakes.
by steve
Tue Jun 11, 2019 8:21 pm
Forum: Audiobook Production
Topic: How does ACX check evaluate noise level?
Replies: 12
Views: 996

Re: How does ACX check evaluate noise level?

The noise-floor measurement is; the quietest 0.5 seconds found in the selection. If all of the silences include breaths, then it will not be a true measure of the noise floor. When selecting the region to test, ensure that the selection includes at least on bit, longer than 0.5 seconds, that is true...
by steve
Tue Jun 11, 2019 6:29 pm
Forum: Windows
Topic: Audacity stops recording during silence [SOLVED]
Replies: 23
Views: 4915

Re: Audacity stops recording during silence

Try setting "Latency compensation" to zero. As waxcylinder wrote, when using WASAPI, if there is no active audio stream, then there is nothing (not even zeros) for Audacity to record, so Audacity is left waiting for the data. In many cases this is rather convenient as you can set Audacity ...
by steve
Tue Jun 11, 2019 6:21 pm
Forum: Adding Features to Audacity
Topic: Convert to and from FLAC on floating point signals
Replies: 1
Views: 273

Re: Convert to and from FLAC on floating point signals

When you export from Audacity to FLAC, there is a choice of 16-bit or 24-bit. If you are converting from 32-bit float to 16 or 24 bit, then I think it should be pretty obvious that there has to be some sort of rounding. If we warn about this for FLAC, then logically we would have to warn users for e...
by steve
Tue Jun 11, 2019 3:59 pm
Forum: Macros and Scripting
Topic: Batch split 35 separate 45 minute files into "3" 15 minute files each?
Replies: 10
Views: 1132

Re: Batch split 35 separate 45 minute files into "3" 15 minute files each?

These macros work. They may not be optimum I was interested to see what you would come up with Bill. I agree, there's no really elegant way to do this with normal Macros. The best solution that I came up with, was to create a "Nyquist Macro", and use it in a normal macro. Normal Macros ha...
by steve
Tue Jun 11, 2019 2:25 pm
Forum: Windows
Topic: Audacity stops recording during silence [SOLVED]
Replies: 23
Views: 4915

Re: Audacity stops recording during silence

What are your settings in "Edit > Preferences > Devices" in the "Latency" section?
by steve
Tue Jun 11, 2019 12:32 pm
Forum: Compiling Audacity
Topic: X64
Replies: 12
Views: 3205

Re: X64

When the process reaches about 1GB I get an unhandled exception message. What process? If you are referring to Nyquist, then I can't guarantee that a 64-bit build will solve the problem. Nyquist is essentially a 32-bit library written in C, with 64-bit "compatibility" added. There will pr...