wave

问题 I have been given a large WAV-file of continuous underwater recording which I would like to convert to a numpy array for analysis. I am struggling to do this. So far I have: import numpy as np import scipy as sp import wave as wv import struct wavefile = wv.open(filename,'r') (nchannels,sampwidth,framerate,nframes,comptype,compname) = wavefile.getparams() // read a sample as example wavedata =wavefile.readframes(1) The first frame looks like this: '\xcd\xbc\xff@\x01\x00'. I have tried to

问题 I am coding a basic frequency analisys of WAVE audio files, but I have trouble when it comes to convertion from WAVE frames to integer. Here is the relevant part of my code: import wave track = wave.open('/some_path/my_audio.wav', 'r') byt_depth = track.getsampwidth() #Byte depth of the file in BYTES frame_rate = track.getframerate() buf_size = 512 def byt_sum (word): #convert a string of n bytes into an int in [0;8**n-1] return sum( (256**k)*word[k] for k in range(len(word)) ) raw_buf =

问题 I am coding a basic frequency analisys of WAVE audio files, but I have trouble when it comes to convertion from WAVE frames to integer. Here is the relevant part of my code: import wave track = wave.open('/some_path/my_audio.wav', 'r') byt_depth = track.getsampwidth() #Byte depth of the file in BYTES frame_rate = track.getframerate() buf_size = 512 def byt_sum (word): #convert a string of n bytes into an int in [0;8**n-1] return sum( (256**k)*word[k] for k in range(len(word)) ) raw_buf =

问题 I am coding a basic frequency analisys of WAVE audio files, but I have trouble when it comes to convertion from WAVE frames to integer. Here is the relevant part of my code: import wave track = wave.open('/some_path/my_audio.wav', 'r') byt_depth = track.getsampwidth() #Byte depth of the file in BYTES frame_rate = track.getframerate() buf_size = 512 def byt_sum (word): #convert a string of n bytes into an int in [0;8**n-1] return sum( (256**k)*word[k] for k in range(len(word)) ) raw_buf =

问题 How can I remove the silence from the beginning and the end of wave files with PyDub? I guess I should access segment by segment and check whether it's silent or not (but I'm not able to do it) :/ e.g. I have a wave file with silence at the beginning, end, or both (like below) and I want to remove the silence at the beginning and at the end of the file: e.g. I want to import it sound = AudioSegment.from_wav(inputfile) cycle for every sample of sound to check whether it's silent and mark the

问题 How to create a wave STREAM out of raw audio samples in C#? 回答1: Here is a good sample project for reading and writing WAV files in C#: http://www.codeproject.com/KB/audio-video/Concatenation%5FWave%5FFiles.aspx Assuming that your "raw audio" is an array of short (2-byte) integers, this is a simple task. The header of a WAV file is 44 bytes (see note), so you write out the header first (using the code in the sample) followed by the data. Note: not all WAV files are "canonical", which means

问题 I’m currently searching for 802.11p simulation feasability and I would like to test IPv6 as well, apart from the WAVE/IEE 802.11p. The INET would be the solution but I’m doubting about the compatibility with the Veins 4 alpha 2 (latest version). What I know is that Veins 3.X was based on MiXiM, but at the same time INET and MiXiM can be compatible and installed together in OmNET, combining them or even with MixNET. I would really like to know if somebody has achieved them work al together

问题 Im searching for a way to convert Wave files into a list of numbers to cross-correlate the resulting vectors (like the numbers you get when you read a wave file on MATLAB) 0.6653 -0.8445 0.9589 -0.9999 0.9643 -0.8547 0.6797 -0.4525 0.1907 0.0858 -0.3557 0.5983 -0.7951 0.9309 -0.9953 0.9835 -0.8962 0.7402 -0.5275 0.2742 is there a way to do that in Android or even C/C++? i really dont know how to start. 回答1: WAVE file format is fairly simple, especially if you're interested in linear PCM

问题 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 回答1: 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

问题 I'm looking for how to draw the sound waves according to music. I want waves like this image here is some discussion about displaying Waves from music WaveForm on IOS rendering a waveform on an iphone audio waveform visualisation with iPhone Github Example Links https://github.com/gyetvan-andras/cocoa-waveform https://github.com/benalavi/waveform https://github.com/JingWZ/WaveView https://github.com/gyetvan-andras/cocoa-waveform https://github.com/ioslovers/ATTabandHoldAudioRecord https:/