4 votes
Accepted

Frequency distribution graphs in music

There are definitely tendencies - and these mainly appear through the use of the same types of instruments in a genre, some more explicit than others, e.g. Drum and bass, Funk and A capella. Almost ...
4 votes
Accepted

How lossless is my lossless music?

Audio sampled at 44.1 kHz (like normal audio CDs) can in theory contain content up to the Nyquist limit of 22.05kHz. However, you need a filter to remove all content above that limit, otherwise it ...
  • 2,863
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 ...
  • 7,279
3 votes
Accepted

How to create an audio file from a spectrogram?

You can use Coagula. I believe it is the same software Aphex Twin used in Windowlicker.
  • 1,553
3 votes

Why is there noise in my spectrum analyser despite having no external devices plugged in?

All audio electronics create noise, including your interface itself. It's actually pretty good that the self noise of the interface is at around -100 dB. Even when all other sources of noise are ...
  • 2,040
2 votes

Is it possible for two identical waveforms to have different spectrograms?

A waveform is a period of superimposition of all the frequencies involved, each of which can be deconstructed into sine waves. Therefore a waveform will always represent those frequencies, ...
2 votes

MP3 Psychoacoustic Cut-off Frequencies for Low-Bitrate Presets

Here is a tentative answer based on the 192kHz 24-bit Japanese female speech sample: First I generate the test files from the sample file, sample02.wav: for br in 8 16 24 32 40 48 56 64 80; do ...
  • 131
1 vote

Audio spectrum analysis: PC Software vs Hardware Spectrum Analyzer

You can obtain very accurate audio spectrum analysis with a software analyzer. You must nevertheless be aware of the potential distortion brought by your acquisition chain (microphone + preamp) and ...
  • 2,743
1 vote

How to create an audio file from a spectrogram?

There's also this project with some examples http://arss.sourceforge.net/examples.shtml
  • 1,470
1 vote

Why does this spectrorgam look so jagged?

lol, those "strange lines" (horizontal) are harmonics; and because this spectrogram is scaled linearly, they're evenly spaced; if it was scaled logarithmically, it would closer represent what we hear. ...
  • 2,256

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