Search found 391 matches

by flynwill
Wed Aug 15, 2018 4:18 pm
Forum: Audiobook Production
Topic: Selection too long for analysis
Replies: 12
Views: 193

Re: Selection too long for analysis

In many cases, plug-ins can be rewritten in a way that avoids holding the data in RAM. This is the recommended approach for effects that may be used on long files. New features continue to be added to Nyquist to make this approach possible for more effects, for example, it is now possible to get th...
by flynwill
Mon Aug 13, 2018 2:40 pm
Forum: Audiobook Production
Topic: Selection too long for analysis
Replies: 12
Views: 193

Re: Selection too long for analysis

Unfortunately there is no easy modification. The routines that ACXCheck uses to do the analysis require that the whole sample be in memory. Most of the analysis tools have this limitation. Also I would say that if you have your mastering process down pat, there probably is no need to check every par...
by flynwill
Thu Aug 09, 2018 1:35 pm
Forum: Audiobook Production
Topic: Noise Ceiling
Replies: 11
Views: 247

Re: Noise Ceiling

I can make that pass with just the application of the "LF Rolloff for speech" EQ curve and normalizing to -3.1 db peak. I don't hear any hum or other annoying background noise, only a low rumble that might be the HVAC or it might just be the natural noise of the microphone. If this setup is repeatab...
by flynwill
Wed Aug 01, 2018 1:52 pm
Forum: Audiobook Production
Topic: Noise Ceiling
Replies: 11
Views: 247

Re: Noise Ceiling

Yes, ACX check is not particularly "smart". It is merely reporting the quietest contiguous 1/2 second section of audio it can find in the recording. In this test I don't think there is a gap of that sort, I can hear you breathing through out the quiet bits. Hold your breath for 2-3 seconds (and don'...
by flynwill
Thu Jun 07, 2018 1:54 pm
Forum: Audio Processing
Topic: A mixed mono track with 2 different RMS sources
Replies: 3
Views: 107

Re: A mixed mono track with 2 different RMS sources

Your tapes may be suffering from "sticky shed syndrome" https://en.wikipedia.org/wiki/Sticky-shed_syndrome If that is the case baking the tapes at low temperature (see the Wikipedia article) may bring improvement. I assume you have inspected the heads on your playback deck... You will need to clean ...
by flynwill
Thu Jun 07, 2018 1:47 pm
Forum: Audiobook Production
Topic: Before I begin narration
Replies: 11
Views: 396

Re: Before I begin narration

The noise is electronic in origin, probably from the pre-amps inside the microphone itself. The good news is there is no trace of the "yeti curse" the high-pitched whine that infects a lot of USB microphones nor is there any hum from the power lines, the other common problem.
by flynwill
Thu Jun 07, 2018 3:43 am
Forum: Audiobook Production
Topic: Before I begin narration
Replies: 11
Views: 396

Re: Before I begin narration

Your clip has very high amounts of sub-sonic noise. Fortunately that is very easy to cure, with the "LF Rolloff for Speech" equalization curve. After applying that your noise floor is in great shape. Beyond that you need a bit of compression to get the required RMS-peak ratio. If you search the foru...
by flynwill
Fri May 04, 2018 1:55 pm
Forum: Audio Processing
Topic: Odd repeating low-energy distortion (?) in recorded LP
Replies: 12
Views: 445

Re: Odd repeating low-energy distortion (?) in recorded LP

One of the options in Click Repair allows you to listen to the difference between the processed and unprocessed audio while it is processing. This is useful to detect that the "repair" work really is removing noise and not music. You can also accomplish the same end by bringing the original and proc...
by flynwill
Mon Apr 09, 2018 1:32 pm
Forum: Audio Processing
Topic: Restoring an old tape
Replies: 2
Views: 216

Re: Restoring an old tape

Do you still have the original tape? It is possible much of the damage happened in the playback and/or conversion to mp3. (For example if whoever transcribed it had the Dolby noise reduction turned on and the original was made without Dolby).
by flynwill
Fri Mar 30, 2018 1:41 pm
Forum: Podcasting with Audacity
Topic: Recording my podcast in Stereo
Replies: 10
Views: 647

Re: Recording my podcast in Stereo

There is also the compromise approach. Split the stereo track into two separate mono tracks (Select Split Stereo to Mono from the Audio track dropdown). Now use the "pan pots" on each track to move one voice a little off center to the right and the other a little off center to the left. The resultin...