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How to create a numpy array from a pydub AudioSegment?

由 回眸只為那壹抹淺笑 提交于 2019-12-10 00:57:20
问题 I'm aware of the following question: How to create a pydub AudioSegment using an numpy array? My question is the right opposite. If I have a pydub AudioSegment how can I convert it to a numpy array? I would like to use scipy filters and so on. It is not very clear to me what is the internal structure of the AudioSegment raw data. 回答1: Pydub has a facility for getting the audio data as an array of samples, it is an array.array instance (not a numpy array) but you should be able to convert it

WAVE file extended part of fmt chunk

由 烈酒焚心 提交于 2019-12-08 15:45:00
I have a WAVE file with a wFormatTag that is 3 ( WAVE_FORMAT_IEEE_FLOAT ). Firefox treats WAVE_FORMAT_IEEE_FLOAT files like WAVE_FORMAT_EXTENSIBLE , which means that it expects that a WAVE_FORMAT_IEEE_FLOAT file contains the extended part of the fmt chunk. My file doesn't contain the extended part of the fmt chunk, which results in an error when decoding the file in Firefox: The buffer passed to decodeAudioData contains invalid content which cannot be decoded successfully. This means I have to add wValidBitsPerSample at byte 38, dwChannelMask at byte 40 and SubFormat at byte 44. What

boto3 S3 Object Parsing

由 旧街凉风 提交于 2019-12-08 10:50:33
问题 I'm trying to write a Python script for processing audio data stored on S3. I have an S3 object which I'm calling using def grabAudio(filename, directory): obj = s3client.get_object(Bucket=bucketname, Key=directory+'/'+filename) return obj['Body'].read() Accessing the data using print(obj['Body'].read()) yields the correct audio information. So its accessing the data from the bucket just fine. When I try to then use this data in my audio processing library (pydub), it fails: audio =

WAVE file extended part of fmt chunk

由 旧街凉风 提交于 2019-12-08 04:46:49
问题 I have a WAVE file with a wFormatTag that is 3 ( WAVE_FORMAT_IEEE_FLOAT ). Firefox treats WAVE_FORMAT_IEEE_FLOAT files like WAVE_FORMAT_EXTENSIBLE , which means that it expects that a WAVE_FORMAT_IEEE_FLOAT file contains the extended part of the fmt chunk. My file doesn't contain the extended part of the fmt chunk, which results in an error when decoding the file in Firefox: The buffer passed to decodeAudioData contains invalid content which cannot be decoded successfully. This means I have

Java - Trouble combining more than 2 .wav files

由 假如想象 提交于 2019-12-08 01:57:35
问题 for a project I'm working on, I want to be able to concatenate multiple .wav files. Through my research I was able to come up with this code: File sample1 = new File("F:\\Programming\\Resources\\Java_Sound\\trumpet1.wav"); File sample2 = new File("F:\\Programming\\Resources\\Java_Sound\\trumpet2.wav"); File fileOut = new File("F:\\Programming\\Resources\\Java_Sound\\Test.wav"); AudioInputStream audio1 = AudioSystem.getAudioInputStream(sample1); AudioInputStream audio2 = AudioSystem

Adding silent frame to wav file using python

由 倖福魔咒の 提交于 2019-12-07 08:12:43
问题 First time posting here, lets see how this goes. I trying to write a script in python which would add a second of silence in the beginning of the wav file, but so far been unsuccessfully in doing so. What I was trying to do is read in the wav header and then adding a \0 to the beginning using the wave module but that did not work quite well. Here is the code which is based from here http://andrewslotnick.com/posts/audio-delay-with-python.html import wave from audioop import add def input_wave

Convert OutputStream to ByteArrayOutputStream

由 时光总嘲笑我的痴心妄想 提交于 2019-12-06 17:46:32
问题 I am trying to convert an OutputStream to a ByteArrayOutput Stream. I was unable to find any clear simple answers on how to do this. This question was asked in the title of the question on StackOverflow, but the body of the question aske how to change a ByteArrayStream to OuputStream . I have an OutputStream that is already created and this example given in the answer will not compile! That Question is Here I have an OutputStream that is already constructed and has a length of 44 bytes called

why am i getting error when importing AudioSegment?

由 浪尽此生 提交于 2019-12-06 11:16:35
i'm trying to use pydub, but when i import it to python with AudioSegment it will give me an error saying it doesn't recognize it. i tried using pip install and searching online. any help?? i'm using python 2.7 from pydub import AudioSegment Can u uninstall and try installing using pip install pydub. Also make sure pydub path is in the PYTHONPATH or system PATH . What OS are you using? find out where pydub got installed. I've in C:\Python27\Lib\site-packages\pydub . Open a command-prompt and type in , set PATH=c:\Python27\Scripts;c:\Python27\Lib;C:\Python27\Lib\sit‌​e-packages\pydub;%PA‌​TH%

How To Track No Sound Area In A Wav File?

由 左心房为你撑大大i 提交于 2019-12-06 11:09:43
How to track sections without sounds in a wav file? a small software what I want to develop is deviding a wav file, and it consider a no volume area as a deviding point. how can a program know that volume of a wav file is low? I'll use Java or MFC. I've had success with silence detection by calculating RMS of the signal. This is done in the following manner (assuming you have an array of audio samples): long sumOfSquares = 0; for (int i = startindex; i <= endindex; i++) { sumOfSquares = sumOfSquares + samples[i] * samples[i]; } int numberOfSamples = endindex - startindex + 1; long rms = Math

Java - Trouble combining more than 2 .wav files

由 两盒软妹~` 提交于 2019-12-06 08:59:12
for a project I'm working on, I want to be able to concatenate multiple .wav files. Through my research I was able to come up with this code: File sample1 = new File("F:\\Programming\\Resources\\Java_Sound\\trumpet1.wav"); File sample2 = new File("F:\\Programming\\Resources\\Java_Sound\\trumpet2.wav"); File fileOut = new File("F:\\Programming\\Resources\\Java_Sound\\Test.wav"); AudioInputStream audio1 = AudioSystem.getAudioInputStream(sample1); AudioInputStream audio2 = AudioSystem.getAudioInputStream(sample2); AudioInputStream audioBuild = new AudioInputStream(new SequenceInputStream(audio1,
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