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Questions tagged [audio-analysis]

To be used for questions related to the process of analyzing audio streams or files.

The process of analyzing audio streams or files.

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How to analyze speaker audio output for frequency analysis? Python 3.6

Python 3.6 Ubuntu 18.04 Using the pyaudio module, I've successfully recorded the audio coming out of my speakers, and to test, I've been able to save it to a WAV file correctly. This is a part of a much larger multi-threaded application, so I'm…
Nick Vandemark
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Detecting beat energy with Librosa, finding the first beat of each bar

I need to find the energy of peaks using Librosa so I can detect the first beat of each bar. I am using Librosa to detect audio beats in a click track. This is working well, but I now wish to detect the first beat of every bar. I believe the best…
Stephen Kempin
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How to obtain a frequency array of an audio file in c#

I want to obtain an array of frequencies when I input an audio file in C#. I never have done anything related to this topic so i'm a noob. If the question is too broad please help me to narrow it down.
Lakshith Nishshanke
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frequency analysis of sound

I record birds cries with two microphones. The records can go up to 3 hours and it is time-consuming on audacity to listen to the whole file each day. What I want is a script that takes my original file and gives me a bunch of short audio files,…
Totog1nger
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Reduce MFCC output

I am trying to analyze song audio using a python library, the output is a numpy array, the array is very large in size as the MFCC is calculated for every frame of the audio. When I write this output to a file , each song has an output of about…
nebula186
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Split Audio File with python Librosa

After doing split in an audio file with Librosa, I want to know how to obtain the resultant fragments in mp3 filesSee audio image
Endy Bermúdez R
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How to compute actual spectrogram from decomposed spectogram of an audio file?

I decomposed the spectrogram from an audio file like this: import librosa y, sr = librosa.load('my audio file.wav') S = np.abs(librosa.stft(y)) W, H = librosa.decompose.decompose(S, n_components=32) Now how to recompose the decomposed spectrogram…
Amin Pial
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How to extract stable pitches longer than a given duration from an audio recording?

Given an audio recording (monophonic & mono), having extracted the melody with an algorithm such as Melodia, I would like to find all segments of this pitch series where the frequency is nearly stable (the maximum deviation from the mean frequency…
Peter
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Audio analysis and feature extraction for music visualization

I have a general question regarding how I should proceed with my music visualization endeavors. I am interested in visualizing classical music pieces, either recorded or live. I have used so far Processing, but I am open to other software or…
Ilias Kyriazis
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Audio analysis in iOS for beginners

I'd like to start developing some iOS apps involving audio analysis. I've been reading some Apple's documentation such as Audio Session Programming Guide, but I still need a starting point to audio analysis. I would like to know how could I do…
AppsDev
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AudioRecord: Continuously record audio data and simultaneously analyse it

I am trying to use an AudioRecord object in android to record audio data into a byte array and simultaneously perform some analysis on the recorded data. But I am unsure how to do it. If I use the byte array directly the application crashes. I need…
user1396160
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Audio processing in iOS to get volume and pitch

I'm attempting to create a realtime audio analyzer on iOS7. What I'm looking to get is volume and pitch from the native microphone on an iPod Touch Gen 5, and write to a CSV along with a timestamp. I'd like to break it up into 7 channels, and sample…
RoboArch
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How to detect average pitch in a time-formatted sound wave?

For a sound wave input like the ones generated by OpenAL microphone capture, how can one go about detecting the "average" pitch in the wave? (e.g. if it's a recording of a violin at 440 hz, I want to return ~440 hz). What's the most basic/intuitive…
bfops
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Audio analysis in PYTHON

I'm working with an external sound card device that have 4 microphone inputs and it's conneceted by usb to my laptop. So I need to take samples of the audio that came from the microphones and do a bar chart or any graphic that shows which mic…
Diego Martínez Giardini
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Marf Audio Analysis : Where can I find data for SpeakerIdent app?

I am using SpeakerIdentApp of marf for audio analysis . I wanted to explore it with more data other than provided by speakerIdentApp . I tried with some of the wave files at : http://www.wavsource.com/ but those files are not supported by marf .…
saurabh shashank
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