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17 votes
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What audio formats and codecs are used for YouTube videos?

Your best bet is to see what formats youtube-dl returns by running at a command-line, youtube-dl -F URL which will produce output looking like this format code extension resolution note 249 ...
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  • 584
14 votes

How to recover audio from an incomplete or corrupted AAC/m4a file

This guide worked 100% for me - it takes you through each step. Afterwards, the m4a file plays! Note: this is completely free. http://sysfrontier.com/en/2014/12/31/hello-world/ Also pasting ...
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  • 241
8 votes

Stream Windows audio over the network

SoundIt does just that. And it lets you stream the sound output of your PC to any web browser so you can stream to any phone or even another PC.
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  • 81
8 votes
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Show the differences between two similar audio files using graphical method

When no specific feature is to be observed in sound, the best way to represent it is to display its spectrogram since it reflects what the ear does: measuring energy among frequencies as its varies ...
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8 votes

What does 100Hz 12dB per octave mean?

There are three parameters of this filter that are described in the phrase "100 Hz 12 dB per octave low pass filter". I'll cover them in reverse order. Low pass filter - This means the filter does ...
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  • 2,040
7 votes
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Cubase is blocking audio for other audio application

Go to Devices/Device Setup then under VST Audio System on the right side of the window Tick the option underneath ASIO Driver that says release driver when app is in background... ;-p that worked for ...
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  • 86
6 votes

Recording field audio of car engine/exhaust/etc

I strongly disagree with a lot of Dave's recommendations, based on my experience recording vehicle sounds for racing games, advertisement and sound engineering: an engine under load doesn't sound ...
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  • 2,863
5 votes

How to recover audio from an incomplete or corrupted AAC/m4a file

You could try rewriting the file using ffmpeg with the following command: ffmpeg -i damagedfile.mp4 -c copy fixedfile.aac Alternatively you may use FAAD and a hex editor (e.g. Hexplorer). Find out ...
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5 votes

Are any special steps needed to combine two or more audio files without quality loss?

Mixing audio in a computer is very analogous to how sound mixes in the real world. In the real world, sound is simply pressure waves that cause vibrations in our eardrum that get converted to what we ...
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  • 8,091
5 votes

Monitors and Audio Interface

The audio interface would be used instead of your sound card. The laptop itself shouldn't play a role in the quality of the sound. (Though it can happen... see @left's comment below) The sound ...
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  • 1,760
5 votes

Fixing distortion and low fidelity on a re-recorded audio cassette

Nothing posted by Schizomorph is wrong - if it's busted, it's busted... However, one small ray of light is azimuth/stereo balance correction in software. Back in the old days I had a bit of freeware (...
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  • 7,189
5 votes
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Is there any application that can generate waveform and sine waves of audio files?

I am an engineering student my self and I use Audacity to generate Sine, Sawtooth, Square waves. It's easy as pie. Download Audacity from here. Open Audacity and click on Generate from the Toolbar on ...
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5 votes
Accepted

Which acoustic spectogram shows higher quality of audio file?

What you are asking is impossible to determine from a spectrogram. Spectrograms indicate frequencies present, not the quality of the audio. There may be loss of fine detail in one that would barely ...
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  • 8,091
4 votes

How does digital audio data capture 'texture'? (And not only pitch and volume)

Texture, AKA Timbre, comes from overtones, AKA harmonics. When you play a note on any instrument (including your voice), the note has more than one frequency. The lowest frequency is called the ...
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4 votes

How to deal with clipping in important data

First of all, let's examine what happens when a signal clips: An audio signal can be represented by a string of numbers, so let's say you wan't to record this signal: 0 0.5 1.0 1.2 1.0 0.5 ...
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4 votes
Accepted

What is the name of this kind of audio connector?

They are called Philips "Easy-fit" speaker connectors. They are a proprietary feature and a p.i.t.a. ;) Here's an article on how to replace them. And here's a listing for replacement parts on eBay. ...
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  • 156
4 votes

3.5 mm adaptor shortages/poor connection?

Listen mate, if you are having a problem with every single 3.5mm adapter you have purchased, it's probably the socket.
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  • 8,484
4 votes

What's the name for the type of x-axis scale used in frequency graphs?

It's a Logarithmic scale & is used where a linear scale wouldn't really make sense & would reduce the detail in the lower portions of the graph. As each octave doubles the frequency. The ...
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  • 7,189
4 votes

Fixing distortion and low fidelity on a re-recorded audio cassette

I'm afraid you can't re-construct information (in the waveform) that has been distorted. The one side you can improve is playback quality by using a decent tape player with a good head. Tape ...
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  • 1,553
4 votes

Is there any application that can generate waveform and sine waves of audio files?

Any DAW (digital audio workstation) or even most video editing software will display a waveform for the audio in a particular file. You can not, however, make a "sine wave of whatever audio file" ...
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  • 8,091
4 votes

Is there any application that can generate waveform and sine waves of audio files?

You may want to check out SPEAR. From the website: SPEAR is an application for audio analysis, editing and synthesis. The analysis procedure (which is based on the traditional McAulay-Quatieri ...
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  • 15.4k
4 votes

Why do MP3 files have a sample rate? (When they are just composed of sine waves)

Digital sound files are not made up of sine waves - You may be thinking of FM or West Coast synthesis where sine waves are used to modulate other sine waves to generate more complex waveforms. You ...
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3 votes

What type of plug-in is Fruity Loop's Gross Beat?

I would say Gross Beat falls under the time manipulation category, it just creates stutters by jumbling the audio around a bit, and changes the speed or volume level on certain tracks. I imagine that ...
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3 votes

How can I set PulseAudio to use convolution

You could run Jack all the time and route pulse output through it. Only minimal cpu and latency cost, but then no second convonluter, maintenance,etc needed. $ sudo aptitde install pulseaudio-module-...
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3 votes

What are the correct audio levels for Voice and Music in a web promo video?

I find what coaxmw says to be true when I don't have a lot of music, so with primarily voice over. Regardless of Lufs and other standards for loudness, you should be mixing/leveling with your ears not ...
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  • 2,906
3 votes
Accepted

How does digital audio data capture 'texture'? (And not only pitch and volume)

Simply... the 'texture' or complexity of the wave. The addition & subtraction of a myriad simple sine waves of different frequencies & phases, overlaying each other. Without going into any ...
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  • 7,189
3 votes

Can a digital sound wave take any shape?

According to theory, all complex sound waves can be decomposed into a set of sine waves, which are the most basic of wave shapes. Two sine waves of the same frequency will be identical except possibly ...
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  • 1,721
3 votes
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Can a digital sound wave take any shape?

A perfect sine wave can only be one shape as it is derived from geometry: So it always sounds the same. But yes, a wave can take any shape and this affects the timbre. An interesting point however, ...
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  • 4,465
3 votes

Assigning a numerical value to clarity

You should look into feature extraction from audio signals. Audio is being analyzed, as a result you get numerical values that more or less correspond to the perceived qualities of the sound. The ...
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