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Questions tagged [audacity]

free software, cross-platform digital audio editor and recording application

Audacity is a free software, cross-platform digital audio editor and recording application. It is available for Windows, macOS, Linux and BSD.

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Understanding hex output of raw 8-bit 8000Hz PCM sine wave

Using Audacity, I generated a 1Hz Sine Wave with a 1 second length and 1.0 amplitude. This resulted in the following wave as expected. With the Audacity sample size set to 8000Hz, I then exported the audio as RAW (header-less) Signed 8-bit PCM…
Daniel O.
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ffmpeg / Audacity channel splitting differences

So I'm working on a speech to text project using Python and Google Cloud Services (for phone calls). The mp3s I receive have one voice playing in the left speaker, the other voice in the right speaker. So during testing, I manually split the…
Adrian Chromenko
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How does one programmatically mix multiple audio tracks into one track?

What is the algorithm used by Audacity (or any other audio editing program) to mix separate sound tracks? ie. what is the process of merging the tracks to a single one when the "Mix and Render" command is used.
NullVoxPopuli
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What is the difference between different fadein/fadeout curves in ffmpeg?

Here is the list of possible curves for afade and acrossfade filters from here https://ffmpeg.org/ffmpeg-filters.html#afade-1 tri select triangular, linear slope (default) qsin select quarter of sine wave hsin select half of sine…
siods333333
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Manipulating audio to bypass content ID detection

I'm using YouTube's "auto-generated" captions feature to generate transcripts of mp3 files. I do this by first converting the mp3 to a blank mp4, uploading to YouTube, waiting for the auto generated captions to appear, then extracting the SRT…
Adam
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5 individual audio channels in 1 file

Not sure where to put this question, so I apologize in advance. I have a test set up with 5 speakers in a room, surrounding a pair of mics. I'm testing the sensitivity of the mics from the different angles of the speakers. I have an amp/mixer…
tsf144
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How did I get this figure?

I have this code: """Softmax.""" import math scores = [3.0, 1.0, 0.2] import numpy as np def softmax(x): """Compute softmax values for each sets of scores in x.""" pass # TODO: Compute and return softmax(x) sum_denominator = 0 …
gsamaras
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Audio file format issue in objective c

I have written an audio WAV (have recorded my voice) file using AVAudioRecorder. The final file format is a WAV file. File was successfully saved and I can hear my voice. I want to send this file to a back End server (web-service). But my server…
2vision2
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Remove duplicate string in multiple lines

Okay, so I have a big ol' beat finder label output from Audacity that looks like this: 25.651000 25.651000 25.666000 25.666000 25.685000 25.685000 25.718000 25.718000 25.737000 …
ArchBlox
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Bulk MP3 noise removal

Overview: I have about 1000 MP3 files that I need to perform noise removal on. I have used Audacity in the past for individual noise removal operations but Audacity will not cut it for this job. Audacity is unable to perform bulk operations and I…
Elliot Huffman
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Audacity installation error

Getting following error on installing audacity in linux: export/ExportPCM.cpp: In member function ‘bool ExportPCM::AddStrings(AudacityProject*, SNDFILE*, Tags*, int)’: export/ExportPCM.cpp:740: error: ‘SF_STR_GENRE’ was not declared in this…
ashu
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how to get a similar plot like audacity with Scilab

I have an audio file, that I analyse with audacity and the spectrum look like : I would like to get the same with scilab so I've run this code : [y,Fs] = wavread('fileName.wav'); Y_0 = abs(fft(y(1,:),-1)); plot(fftshift(Y_0)); and the result is…
Engine
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Autoit script to automate the audacity track down menu with dynamic mouseclick

I am trying to automate some 600 mp3 files for church to combine instrument and voice into one track so I can use the mixer to do left or right channel. when I combined two sounds file, I need to select left channel for first track and right channel…
AndrewS
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Noisy mixdown in Audacity. Any Audacity (the sourceforge project) gurus out there?

Link to the project Hey guys. I'm a longtime lurker, and usually like learning about this stuff on my own, but I figured I would see if someone (especially someone involved with the active open source project or its dependencies) would happen to…
EvilShred666
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LISP/Nyquist opening a file and reading line-by-line

I'm struggling to open a file, and read each line until EOF. I'm using nyquist, which is based on XLISP, and lacks Common Lisp's with-open-file. My code is: (let ((in_file (open "/home/soodesune/testfile.csv" :if-does-not-exist nil))) (loop…
SooDesuNe
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