Search found 59476 matches

by steve
Wed Jul 16, 2014 5:36 am
Forum: Windows
Topic: Selecting and deleting audio between labels.
Replies: 18
Views: 1912

Re: Selecting and deleting audio between labels.

Ctrl+A (select All) "Edit > Labeled Audio > Copy" Double click on audio track to select it Ctrl+V (Paste contents of the clipboard) "Effect > Truncate Silence" For Truncate Silence set the controls to: 100 millisecond (must be less than the smallest gap that you need to remove) ...
by steve
Wed Jul 16, 2014 12:45 am
Forum: Audio Processing
Topic: Invert effect is audible?
Replies: 9
Views: 1634

Re: Invert effect is audible?

A similar difference can be heard (in headphones) when inverting a sawtooth waveform. Here's a low-pass filtered sawtooth waveform. The only difference between the two tones is that one is inverted. To ensure that was the case, I generated one waveform, then filtered it, then used Normalize to ensu...
by steve
Wed Jul 16, 2014 12:36 am
Forum: Audio Processing
Topic: Invert effect is audible?
Replies: 9
Views: 1634

Re: Invert effect is audible?

I could imagine that plosives might sound different inverted when listening through headphones, but I'm surprised that "nasals like m" should sound different. However, I've tried it myself and I do agree that there is a clearly audible difference. The attached is one cycle from an "Mm...
by steve
Tue Jul 15, 2014 11:50 pm
Forum: Audio Processing
Topic: Invert effect is audible?
Replies: 9
Views: 1634

Re: Invert effect is audible?

How were you listening? Headphones? Ear buds? Computer speakers? Studio monitor speakers?
by steve
Tue Jul 15, 2014 11:46 pm
Forum: Windows
Topic: Are trebles eliminated when converting to low bitrates?
Replies: 3
Views: 474

Re: Are trebles eliminated when converting to low bitrates?

I think AAC tends to preserve more high frequencies, and it's supposed to be better. That depends who you ask. Apple say that AAC is better than other compressed formats. Microsoft say that WMA is better than other compressed formats. The Fraunhofer Institute say that MP3 is better, but only if you...
by steve
Tue Jul 15, 2014 9:06 pm
Forum: Windows
Topic: When I click to monitor input level, only input on left?
Replies: 5
Views: 768

Re: When I click to monitor input level, only input on left?

Plug the mic into channel 1 (left channel) of the Focusrite,
then set Audacity to record "1 channel (mono)" in the device toolbar.

"Mono" tracks play through both left and right (like listening to a mono radio show on a stereo radio).
by steve
Tue Jul 15, 2014 9:01 pm
Forum: Audacity 2.x Feedback and Reviews
Topic: Inaccurate documentation for compressor?
Replies: 29
Views: 6042

Re: Inaccurate documentation for compressor?

And finally, comparing the "mix" from my previous post with "2:1 upward compression, -12 dB threshold" with Audacity's compressor.
tracks005.png
tracks005.png (20.93 KiB) Viewed 1833 times
by steve
Tue Jul 15, 2014 8:55 pm
Forum: Audacity 2.x Feedback and Reviews
Topic: Inaccurate documentation for compressor?
Replies: 29
Views: 6042

Re: Inaccurate documentation for compressor?

Same thing here, but I started with a peak level of -6 dB so that the gain did not need pulling down after mixing, and increased the compression ration (by running the compressor multiple times). We can see here that "above the threshold" (second half of the track), the slope is virtually ...
by steve
Tue Jul 15, 2014 8:44 pm
Forum: Audacity 2.x Feedback and Reviews
Topic: Inaccurate documentation for compressor?
Replies: 29
Views: 6042

Re: Inaccurate documentation for compressor?

So the signal is "duplicated" rather than split (in so far that the input volume of both parts is not modified)? If you were going to create "parallel compression" in Audacity, using a "normal" (downward) compressor, then you could do that by duplicating the track, the...
by steve
Tue Jul 15, 2014 8:18 pm
Forum: Windows
Topic: Are trebles eliminated when converting to low bitrates?
Replies: 3
Views: 474

Re: Are trebles eliminated when converting to low bitrates?

Does this mean the trebles in the song are also eliminated, and thus, cannot be heard during music playback? Yes, but note that 15 kHz is very high in the audio frequency range and even for young people with 'perfect' hearing, sensitivity to frequencies is much reduced. In other words, you don't he...