wave

问题 In the code, first I'm opening wav file called output_test.wav. I then filter the noise from the signal using fftpack. Problem : I'm trying to convert the filtered signal i.e. filtered_sig array into wav file properly. Currently when i open TestFiltered.wav I get the error: "The item was encoded into a format not supported: 0xc00d5212" Upon further investigation it seems i'm not filtering noise correctly? I think the error comes from the last 2 lines: filteredwrite = np.fft.irfft(filtered_sig

问题 In the code, first I'm opening wav file called output_test.wav. I then filter the noise from the signal using fftpack. Problem : I'm trying to convert the filtered signal i.e. filtered_sig array into wav file properly. Currently when i open TestFiltered.wav I get the error: "The item was encoded into a format not supported: 0xc00d5212" Upon further investigation it seems i'm not filtering noise correctly? I think the error comes from the last 2 lines: filteredwrite = np.fft.irfft(filtered_sig

问题 In the code, first I'm opening wav file called output_test.wav. I then filter the noise from the signal using fftpack. Problem : I'm trying to convert the filtered signal i.e. filtered_sig array into wav file properly. Currently when i open TestFiltered.wav I get the error: "The item was encoded into a format not supported: 0xc00d5212" Upon further investigation it seems i'm not filtering noise correctly? I think the error comes from the last 2 lines: filteredwrite = np.fft.irfft(filtered_sig

问题 I'm trying to open a stereo stream and convert it to mono, using the wave module in python. So far I was able to write a single (left or right) channel from a 16bit stereo little endian file: LEFT, RIGHT = 0, 1 def mono_single(cont, chan=LEFT): a = iter(cont) mono_cont = '' if chan: a.next(); a.next() while True: try: mono_cont += a.next() + a.next() a.next(); a.next() except StopIteration: return mono_cont stereo = wave.open('stereofile.wav', 'rb') mono = wave.open('monofile.wav', 'wb') mono

问题 I'm trying to open a stereo stream and convert it to mono, using the wave module in python. So far I was able to write a single (left or right) channel from a 16bit stereo little endian file: LEFT, RIGHT = 0, 1 def mono_single(cont, chan=LEFT): a = iter(cont) mono_cont = '' if chan: a.next(); a.next() while True: try: mono_cont += a.next() + a.next() a.next(); a.next() except StopIteration: return mono_cont stereo = wave.open('stereofile.wav', 'rb') mono = wave.open('monofile.wav', 'wb') mono

问题 I have put together the following code using PyAudio for playing a wav file, following the official code examples, and I encounter consistent trouble getting a clean playback with it. The trouble is not specific to certain files, it ensues for audio wav files coming from multiple different sources and having different (standard) sample frequencies, all alike. Details With the synchronous stream writing variant demonstrated in the code below, most of the time the wav file will not play

问题 I have put together the following code using PyAudio for playing a wav file, following the official code examples, and I encounter consistent trouble getting a clean playback with it. The trouble is not specific to certain files, it ensues for audio wav files coming from multiple different sources and having different (standard) sample frequencies, all alike. Details With the synchronous stream writing variant demonstrated in the code below, most of the time the wav file will not play

问题 I'm streaming microphone input from my laptop computer using Python. I'm currently using PyAudio and .wav to create a 2 second batches (code below) and then read out the frame representations of the newly created .wav file in a loop. However I really just want the np.ndarray represented by "signal" in the code that is the Int16 representation of the .wav file. Is there a way to bypass writing to .wav entirely and make my application appear to be "real-time" instead of micro-batch? import

问题 I assign a value to a variable x in the following way: import wave w = wave.open('/usr/share/sounds/ekiga/voicemail.wav', 'r') x = w.readframes(1) When I type x I get: '\x1e\x00' So x got a value. But what is that? Is it hexadecimal? type(x) and type(x[0]) tell me that x and x[0] a strings. Can anybody tell me how should I interpret this strings? Can I transform them into integer? 回答1: The interactive interpreter echoes unprintable characters like that. The string contains two bytes, 0x1E and

问题 I want to use Python to access a wav-file and write its content in a form which allows me to analyze it (let's say arrays). I heard that "audiolab" is a suitable tool for that (it transforms numpy arrays into wav and vica versa). I have installed the "audiolab" but I had a problem with the version of numpy (I could not "from numpy.testing import Tester"). I had 1.1.1. version of numpy. I have installed a newer version on numpy (1.4.0). But then I got a new set of errors: Traceback (most