19
votes
audacity resampling
At the bottom left of the main Audacity screen when you're editing the audio is a drop-down menu labelled "Project Rate (Hz)". If you import, for example, a 96k audio file, the project rate ...
- 191
18
votes
Accepted
Import FFmpeg into Audacity
The FFmpeg project recommends Windows builds from the following sources:
https://www.gyan.dev/ffmpeg/builds/
https://github.com/BtbN/FFmpeg-Builds/releases
On one of these pages, select a “shared” ...
- 56.9k
16
votes
Accepted
Will editing an MP3 harm the quality?
Yes. MP3 is lossy so if you re-encode the new file to MP3 with Audacity/LAME, you will lose quality. But if you output the cropped file using a lossless codec such as FLAC, the quality should be no ...
- 14.1k
14
votes
How do I move audio from one portion to another in Audacity?
Yes, you can move tracks around without cutting and pasting!
At the top of the Audacity screen, just right of the transport buttons there are several "Tool" buttons. Click this button:
This is ...
- 149
13
votes
MME, Windows DirectSound or Wasapi
MME is often the default selection since it is supported by most Windows OSes (MME was released in 1991). Between DirectSound and WASAPI there is not a big difference, as DirectSound is basically just ...
- 186
11
votes
How to record both input and output audio simultaneously?
By creating a virtual sound card and looping back both the real sound card's input and output into it, it's possible to record both, without hearing yourself speak.
The following is adapted from this ...
- 111
8
votes
Accepted
How can I import audio sequentially in Audacity?
As it happens, I found a hacked-together solution from Audacity themselves:
Import all files at once by using Import
From the menu, click Select → All
From the menu, click Tracks → Align ...
- 2,336
7
votes
Accepted
Audacity adds a gap when exporting mp3
Problem: MP3 File has a gap
This is a known, acknowledged issue since at least 2000:
1 Why is a decoded MP3 longer than the original .wav file?
Because LAME (and all other MDCT based encoders) add ...
- 7,224
6
votes
Accepted
Read wav file header - possibly with audacity - on linux
You can use ffmpeg on the terminal.
I think ffmpeg -i is what you are looking for.
example: ffmpeg -i filename.wav
When I do it on a random file i downloaded I get this feedback:
[jarco@geronimo ~]$...
- 615
6
votes
Completely cutting silence out of an audio file
I have gaps in my interned steaming recordings due to buffering. I found that they can all be automatically closed by using the Effect > Truncate Silence method. I set the duration to 0.1 seconds for ...
5
votes
MME, Windows DirectSound or Wasapi
According to Audacity:
"MME: This is the Audacity default and the most compatible with all audio devices.
Windows DirectSound: This is more recent than MME with potentially less latency.
Windows ...
- 51
4
votes
audacity resampling
Steps to down sample:
Open track to be converted (File|Open).
Select Required Project Rate (Drop down box in bottom left corner).
Select the track by clicking on the left side of the display (below ...
- 41
4
votes
ffmpeg: Removing parts with silence: Efficiently remove several parts of a Video
Expanding on Franck's answer, there are better alternatives to Jumpcutter:
https://github.com/carykh/jumpcutter/issues/180
Edit: Unfortunately this issue has been deleted on Github, but you can see it ...
- 1,364
4
votes
Accepted
ffmpeg: Removing parts with silence: Efficiently remove several parts of a Video
https://github.com/carykh/jumpcutter (MIT license) automatically removes parts of a video that have no or little audio. It relies on ffmpeg and the pipeline is coded in Python 3 (runs on Ubuntu, ...
- 19.3k
4
votes
How to enhance 22.05 kHz speech audio material for listening purposes to 44.1 kHz?
If the sample rate to record the voice has been 22kHz you can't just enhance it by setting it to 44kHz. You can compare it to a bitmap image: you won't get more details by making "the pixels bigger". ...
- 8,490
4
votes
How to enhance 22.05 kHz speech audio material for listening purposes to 44.1 kHz?
22.05 kHz isn't "poor quality" as far as spoken word goes... most of the Audible library has a sample rate of 22.05 kHz - even for the "high quality" files.
If the recording "sounds bad", then it's ...
- 18.6k
3
votes
ffmpeg: Removing parts with silence: Efficiently remove several parts of a Video
Project on Github
I created my own script, that works fine for me:
https://github.com/DarkTrick/python-video-silence-cutter
Logic for cutting silences with ffmpeg
Find all silence parts with ffmpeg:
...
- 151
3
votes
MME, Windows DirectSound or Wasapi
MME (Multimedia Events, aka WinMM [Windows Multimedia APIs]) should be an old interface that exists since as early as Windows 95 (or even earlier).
WASAPI comes with the new audio stack on Windows ...
- 1,934
3
votes
Accepted
Is it possible to run two separate instances (copies, versions) of Audacity?
Yes, you can.
Steps:
Create another user on your Windows machine
Do Shift+Right Click on Audacity file, then click on "Run As" or "Run As different user"
Use the new user you created to open the ...
- 46
3
votes
How to remove unwanted noise peaks in sound files in Windows?
Truncating peaks like that can be done using the Limiter (Effect > Limiter).
You probably want to use a "Hard Limit", as only to affect the peaks. Also, you can of course use it multiple times in ...
- 137
3
votes
Accepted
How much disk space is required for importing a 180MB mp3 file into Audacity?
Short answer: You'll need a lot of space.
Longer answer:
Audacity always works with uncompressed audio data, so when importing an MP3 file (which is a compressed format), the file is first decoded.
...
3
votes
How to remove songs from vocals using audacity
This is what I frequently call "the holy grail of the misinformed".
It cannot be done.
You cannot unbake a cake.
Give up now.
BTW, it usually doesn't work the other way round either. Flipping ...
- 43k
3
votes
How to enhance 22.05 kHz speech audio material for listening purposes to 44.1 kHz?
As already mentioned, recording at 22.05kHz for spoken word isn't in itself 'bad'; but neither can it really be 'fixed' because there's no information in the recording to emphasise. You can only work ...
- 43k
3
votes
Accepted
How to stretch a shorter audio track to fit longer video with Audacity
I was able to accomplish this using the Change Speed filter and then adding an initial delay to the track using the MKVToolNix GUI.
Note: This method does come with the downside of changing the ...
- 11.1k
3
votes
Left and right tracks of audio cancel or mute each other
This seems like a neat problem!
My guess (not even 100% sure how to check,though possibly Audacity) is that the left and right channels are 180 degrees out of phase with each other, meaning when the ...
- 7,898
3
votes
Accepted
Left and right tracks of audio cancel or mute each other
If the phase of the stereo tracks is such that they cancel themselves out, you can try reversing the phase of one of the tracks using ffmpeg:
ffmpeg -i in.wav -af "aeval=val(0)|-val(1)" out.wav
Here,...
- 218k
2
votes
How can I split an audacity recording track at regular intervals?
In Audacity, select the whole clip then Tools > Regular Interval Labels.... Here you can specify either the number of intervals to create or the length of each interval. Once you have created the ...
- 300
2
votes
Batch convert .wav to mp3 and ogg?
I did some change to a bat file I have found on SO, it now, deals with spaces in files names as it is often the case in songs name.
this bat file convert .wav to .mp3, using the VLC command line tool. ...
- 153
2
votes
Batch convert .wav to mp3 and ogg?
Download ffmpeg from below link and install it:
http://ffmpeg.zeranoe.com/builds/
create and run batch file with below commands in it:
echo converting *.wav to *.ogg
mkdir ..\Ogg
for /r %%i in (*) ...
- 21
2
votes
LAME library in Audacity
The Audacity manual has up to date links for LAME and FFmpeg known to work with the current version of Audacity: http://manual.audacityteam.org/man/faq_installation_and_plug_ins.html#lame
Only top scored, non community-wiki answers of a minimum length are eligible