wav

I am currently developing a website using the CodeIgniter framework and in one of the Process I need to download a .wav music file and convert it to .mp3 file. All the coding needs to be done only in PHP and I cannot use Ruby or java to do so. And I am currently hosting on a shared env i.e. Dreamhost. So please let me know how to work out this problem. Use FFMPEG . There is a PHP extension for it , but I've found better success just calling exec() . Most hosts I have used (even shared hosting) will install it if it isn't already available. Edit: Dreamhost provides this for you. See this: http:

I have a very huge WAV file, about 100MB in size. I would like to use Java to read this wav file and split it into smaller chunks for every 2 seconds of audio. Is it possible to do this in Java? Could you please suggest me an API with which I can achieve it? Thanks in advance, Snehal You can use AudioInputStream and its AudioFileFormat member (which contains an AudioFormat instance) to know what to write (format, sample rate), you can use AudioSystem to write it. Based on the sample rate of the format you can find out how many bytes of audio are 2 seconds, and go on a loop of reading that many

I'm currently experimenting with generating sounds in Python, and I'm curious how I can take a n array representing a waveform (with a sample rate of 44100 hz), and play it. I'm looking for pure Python here, rather than relying on a library that supports more than just .wav format. You should use a library. Writing it all in pure python could be many thousands of lines of code, to interface with the audio hardware! With a library, e.g. audiere, it will be as simple as this: import audiere ds = audiere.open_device() os = ds.open_array(input_array, 44100) os.play() There's also pyglet, pygame,

I read about.wav file format by googling,all I could figure was that Frames are made of samples(of some defined bit depth) and a wav stereo file has a multiple of something called channels.... The confusion is whether a channel is made up of frames? Do all channels play along when I play some audio file? If a channel is made up of frames,are all channels equal in length(bit wise)? Please answer if someone can,I have to display each channel separately when playing a wav file in waveform In each frame in wav there are channels. If you have stereo sound, then each frame contains two samples (left

ifile = wave.open("input.wav") how can I write this file into a numpy float array now? Joran Beasley >>> from scipy.io.wavfile import read >>> a = read("adios.wav") >>> numpy.array(a[1],dtype=float) array([ 128., 128., 128., ..., 128., 128., 128.]) typically it would be bytes which are then ints... here we just convert it to float type you can read about read here https://docs.scipy.org/doc/scipy/reference/tutorial/io.html#module-scipy.io.wavfile 来源： https://stackoverflow.com/questions/16778878/python-write-a-wav-file-into-numpy-float-array

I'm interested in precisely extracting portions of a PCM WAV file, down to the sample level. Most audio modules seem to rely on platform-specific audio libraries. I want to make this cross platform and speed is not an issue, are there any native python audio modules that can do this? If not, I'll have to interpret the PCM binary. While I'm sure I can dig up the PCM specs fairly easily, and raw formats are easy enough to walk, I've never actually dealt with binary data in Python before. Are there any good resources that explain how to do this? Specifically relating to audio would just be icing.