Search found 59476 matches

by steve
Wed Apr 06, 2016 1:07 pm
Forum: General Audio Programming
Topic: Automatic sample length adjustment
Replies: 4
Views: 2276

Re: Automatic sample length adjustment

Try running this code in the Nyquist Prompt effect (http://manual.audacityteam.org/o/man/ny ... rompt.html):

Code: Select all

;control ln "Required length in samples" int-text "" 1024 1 nil
(force-srate (* ln (/ *sound-srate* len)) *track*)
by steve
Wed Apr 06, 2016 9:15 am
Forum: Compiling Audacity
Topic: One error when compiling Audacity 2.1.2 on Win 7 Pro 64
Replies: 3
Views: 1488

Re: One error when compileing Audacity 2.1.2 on Win 7 Pro 64

I am using VS 2015 but I set Platform Toolset to VS 2013 (v120) build option. I don't develop on Windows, but I don't think that will work. The win/compile.txt document specifies "Microsoft Visual Studio 2013 C++", and as far as I'm aware that document is up to date. https://github.com/au...
by steve
Wed Apr 06, 2016 8:42 am
Forum: Windows
Topic: Waveform (db) View
Replies: 3
Views: 777

Re: Waveform (db) View

If we had dB markings in the normal ("linear") waveform view, it should look something like this: _ 0.0 |_ -3 |_ -6 |_ -12 | |_ -45 | |_ -infinity ______________________ | |_-45 | |_ -12 |_ -6 |_ -3 |_ 0.0 Notice how the numbers are close together near the top/bottom of the track, and bigg...
by steve
Tue Apr 05, 2016 4:38 pm
Forum: Audio Processing
Topic: Snap To for 33-1/3 LPs
Replies: 7
Views: 734

Re: Snap To for 33-1/3 LPs

Labels have a weak "snapping" effect (see: http://manual.audacityteam.org/o/man/au ... tml#snapto)
You could create "regular interval labels" http://manual.audacityteam.org/o/man/re ... abels.html
by steve
Tue Apr 05, 2016 4:31 pm
Forum: Windows
Topic: Saving files in Red Book Format
Replies: 10
Views: 838

Re: Saving files in Red Book Format

DVDdoug wrote:"Choppy audio" probably isn't a format problem...
I agree.
by steve
Tue Apr 05, 2016 4:28 pm
Forum: Windows
Topic: Saving files in Red Book Format
Replies: 10
Views: 838

Re: Saving files in Red Book Format

Gale Andrews wrote:
Steve wrote:The export format referred to in Audacity as "WAV (Microsoft) signed 16-bit PCM" is "LPCM".
I "think" so too from what I have seen buried in libsndfile.
Definitely is - I'm awake now ;)
by steve
Tue Apr 05, 2016 2:20 pm
Forum: Windows
Topic: Saving files in Red Book Format
Replies: 10
Views: 838

Re: Saving files in Red Book Format

So who is correct here? :? Well I'm guilty of adding to the confusion :mrgreen: LPCM is generally used for low bit-rate/low quality audio. No. That's wrong. I'd not had my second cup of tea of the day. "PCM" is an abbreviation for "Pulse-code modulation". There are many differen...
by steve
Tue Apr 05, 2016 9:09 am
Forum: Windows
Topic: Saving files in Red Book Format
Replies: 10
Views: 838

Re: Saving files in Red Book Format

sreyan32 wrote:So LPCM and PCM have no difference right ?
LPCM is related to PCM but is not the same. LPCM is generally used for low bit-rate/low quality audio.
Standard audio CDs use PCM, not LPCM.

Further information:
https://en.wikipedia.org/wiki/Pulse-code_modulation
https://en.wikipedia.org/wiki/Compact_disc
by steve
Tue Apr 05, 2016 7:46 am
Forum: GNU/Linux
Topic: recording inexplicably stops after a few minutes
Replies: 8
Views: 1366

Re: recording inexplicably stops after a few minutes

I had to restart a 15 minute recording several times to get through it. Why was that? What went wrong? I sometimes get Audacity freezing when I set it to use PulseAudio. This is a known issue on Linux and there are several workarounds. The workaround that I use is to bypass PulseAudio by recording ...
by steve
Tue Apr 05, 2016 7:20 am
Forum: Windows
Topic: Saving files in Red Book Format
Replies: 10
Views: 838

Re: Saving files in Red Book Format

After editing in Audacity, export as "WAV (Microsoft) signed 16-bit PCM". In you CD burning application, ensure that you select "Audio CD" (not "data CD"). Check that the files play correctly before you make the CD. If the CD has playback problems but the WAV files play...