Big picture: Trying to identify proxy frauds in video interviews. I have video clips of interviews. Each person has 2 or more interviews. As a first step I am trying to extract the audio from the interviews and trying to match them and identify if audio is from the same person. I used python library librosa t…
Tag: audio
Proccesing audio from twilio media stream using Python
I am streaming call audio to my local server using Twilio Streams. For reference I used the offical guide from the Twilio Team. Decoding the audio and saving it to a .wav file works, although when playing back the audio sounds somewhat distored (“slow-motion” with compression artificats). You can …
Why does multiplying audio signal amplitude by any coefficient doesn’t change it?
Suppose you have the following float32 audio representation loaded from any wav file using the librosa package: If you then will try to play this audio using, for example, a jupyter notebook, the following snippets sounds in the same way: Why does it happen that changing audio aptitude (if I correctly underst…
Different sound playing modules not working
I created a program for my little sister to learn math and now want to add sound. So looked up on how to add sound to my program and found the winsound module. I wrote this code: But for some reason it only plays the default windows sound. (Bliiiiiingg) The file victory.wav is located in the same folder as th…
Google colab audio recording, how to implement a more precise way to tell users to start speaking into mic
I am trying to create a program that will record audio for a machine learning project, and I want to use google colab so that people don’t have to install or run anything on their system, I found this example online that records and plays audio: cell 1 contains the js code to record audio and the python…
Pipe and OpenCV to FFmpeg with audio streaming RTMP in Python
I’m trying to stream FFmpeg with audio. I will show my code below: Import module Create variables Command param Create subprocess to ffmpeg command Send frame to RTMP server I hope you can help me to be able to live stream via FFmpeg over RTMP with audio. Thanks! Answer Assuming you actually need to use…
Is my output of librosa MFCC correct? I think I get the wrong number of frames when using librosa MFCC
The signal is 1 second long with sampling rate of 16000, I compute 13 MFCC with 400 hop length. The output dimensions are (13,41). Why do I get 41 frames, isn’t it supposed to be (time*sr/hop_length)=40? Answer TL;DR answer Yes, it is correct. Long answer You are using a time-series as input (signal), w…
Librosa – Audio Spectrogram/Frequency Bins to Spectrum
I’ve read around for several days but haven’t been to find a solution… I’m able to build Librosa spectrograms and extract amplitude/frequency data using the following: However, I cannot turn the data in D and freq_bins back into a spectrum. Once I am able to do this I can convert the n…
python export() got multiple values for argument ‘format’
i have a wav file and i want to split according to the data i have in a list called speech and to export the the splitted wav files in folders according to the label variable but i keep getting the error export() got multiple values for argument ‘format’ Answer The function definition of export is…
How can i split an Audio file into multiple audio wav files from folder
I have a folder where i have about 2000 audio files in wav format with different time intervals, say some are in 30 sec some 40 and i want to split all of them using python, i tried pydub and different libraries and all of them working for 1 file only, i want to split those using a loop with