wav

问题 Hi I need to read SampleRate, SignalFrequency and Amplitude from .wave file. How can I do that using JavaSound? 回答1: You can get the sampling rate by getting a handle on the AudioFormat object: AudioInputStream audioInputStream = AudioSystem.getAudioInputStream(new File("test.wav")); AudioFormat audioFormat = audioInputStream.getFormat(); Once you have that, you can get the sample rate as follows: float sampleRate = audioFormat.getSampleRate(); As for the amplitude, that is basically the raw

问题 I am working on recording speeches and converting them to downloadable WAV files. I am using Angular6 and MediaRecorder. Firstly I obtain the blob and from the blob, I get the .wav file. The problem is that the WAV file (which can be played and sounds good) loss much of its properties during the process and is not a valid WAV. It keeps being a WebM file. For further processing, I need really valid and high-quality WAV files. In the end, I get files of ~20KB, instead of bigger files of ~300KB.

问题 This is my current code: import winsound as wav wav.PlaySound("music.wav", wav.SND_LOOP | wav.SND_ASYNC) input() wav.PlaySound("beep.wav", wav.SND_ASYNC | wav.SND_NOSTOP) From the python winsound documentation: " [Winsound's] interpretation [of the file] depends on the value of flags, which can be a bitwise ORed combination of the constants described below " The music itself plays asynchronously, and loops. However, when the above code plays the beep, it throws an error (sprites.py is the

问题 Suppose I have 8-bits (mono and stereo) .wav files. When processing of this file I have to declare pointer to array of samples. Suppose I create array for samples. Then if it is mono , I read each sample using for(i = 0; i < n; i++ ) . Q: How can I access right and left channels separately (stereo)? PS I've read a lot about "mono, stereo and *.wave" but still I can't understand how can I realise access to each channell separately... 回答1: You still have array of samples, the question is how

问题 Audio file is sent to us via API which is Base64 encoded PCM format. I need to convert it to PCM and then WAV for processing. I was able to decode -> save to pcm -> read from pcm -> save as wav using the following code. decoded_data = base64.b64decode(data, ' /') with open(pcmfile, 'wb') as pcm: pcm.write(decoded_data) with open(pcmfile, 'rb') as pcm: pcmdata = pcm.read() with wave.open(wavfile, 'wb') as wav: wav.setparams((1, 2, 16000, 0, 'NONE', 'NONE')) wav.writeframes(pcmdata) It'd be a

问题 Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 3 years ago . Improve this question We can perform noise reduction using Open-source Software like Audacity, which is commonly used for the purpose. Please click the below link for reference. denoising with audacity image Is there a python library that can perform a similar function? 回答1: If you

问题 Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 3 years ago . Improve this question We can perform noise reduction using Open-source Software like Audacity, which is commonly used for the purpose. Please click the below link for reference. denoising with audacity image Is there a python library that can perform a similar function? 回答1: If you

问题 Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 3 years ago . Improve this question We can perform noise reduction using Open-source Software like Audacity, which is commonly used for the purpose. Please click the below link for reference. denoising with audacity image Is there a python library that can perform a similar function? 回答1: If you

问题 Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 3 years ago . Improve this question We can perform noise reduction using Open-source Software like Audacity, which is commonly used for the purpose. Please click the below link for reference. denoising with audacity image Is there a python library that can perform a similar function? 回答1: If you

问题 I am trying to pass my audio through low pass filter, so as to filter out noise from it. However, the output of the wav is very noisy, and I am unable to understand why. Find the original and filtered wav and their resp. spectrograms below link. enter link description here The code I have used is: #https://stackoverflow.com/questions/25191620/creating-lowpass-filter-in-scipy-understanding-methods-and-units import numpy as np from scipy.signal import butter, lfilter, freqz, filtfilt from