def read_wave(filename='sound.wav'):
"""Reads a wave file.
filename: string
returns: Wave
"""
fp = open_wave(filename, 'r')
nchannels = fp.getnchannels()
nframes = fp.getnframes()
sampwidth = fp.getsampwidth()
framerate = fp.getframerate()
z_str = fp.readframes(nframes)
fp.close()
dtype_map = {1: numpy.int8, 2: numpy.int16, 3: 'special', 4: numpy.int32}
if sampwidth not in dtype_map:
raise ValueError('sampwidth %d unknown' % sampwidth)
if sampwidth == 3:
xs = numpy.fromstring(z_str, dtype=numpy.int8).astype(numpy.int32)
ys = (xs[2::3] * 256 + xs[1::3]) * 256 + xs[0::3]
else:
ys = numpy.fromstring(z_str, dtype=dtype_map[sampwidth])
wave = Wave(ys, framerate)
return wave
def read_wave(filename='sound.wav'):
#Reads a wave file
fp = open_wave(filename,'r')
nchannels = fp.getnchannels()
nframes = fp.getnframes()
sampwidth = fp.getsampwidth()
framerate = fp.getframerate()
z_str = fp.readframes(nframes)
fp.close()
dtype_map={1:np.int8,2:np.int16,3:'special',4:np.int32}
if sampwidth not in dtype_map:
raise ValueError('sampwidth %d unknown' %sampwidth)
if sampwidth==3:
xs=np.fromstring(z_str,dtype=np.int8).astype(np.int32)
ys=(xs[2::3]*256+xs[1::3]8256+xs[0::3])
else:
ys=np.fromstring(z_str,dtype=dtype_map[sampwidth])
if nchannels==2:
ys=ys[::2]
wave = Wave(ys,framerate=framerate)
wave.normalize()
return wave
def read_wave(filename='sound.wav'):
# Reads a wave file
# filename: string
# return: Wave
fp = open_wave(filename, 'r')
nchannels = fp.getnchannels() # number of audio channels (1 for mono, 2 for stereo)
nframes = fp.getnframes() # number of audio frames
sampwidth = fp.getsampwidth() # sample width in bytes
framerate = fp.getframerate() # sampling frequency
z_str = fp.readframes(nframes) # reads and returns at most nframes of audio as a string of bytes
fp.close()
dtype_map = {1:np.int8, 2:np.int16, 3:'special', 4:np.int32}
if sampwidth not in dtype_map:
raise ValueError('sampwidth %d unknown' % sampwidth)
if sampwidth == 3:
xs = np.fromstring(z_str, dtype=np.int8).astype(np.int32)
ys = (xs[2::3] * 256 + xs[1::3]) * 256 + xs[0::3]
else:
ys = np.fromstring(z_str, dtype=dtype_map[sampwidth])
# if it's in stereo, just pull out the first channel
if nchannels == 2:
ys = ys[::2]
#ts = np.arange(len(ys)) / framerate
wave = Wave(ys, framerate=framerate)
wave.normalize()
return wave
def read_wave(filename='sound.wav'):
"""Reads a wave file.
filename: string
returns: Wave
"""
fp = open_wave(filename, 'r')
nchannels = fp.getnchannels()
nframes = fp.getnframes()
sampwidth = fp.getsampwidth()
framerate = fp.getframerate()
z_str = fp.readframes(nframes)
fp.close()
# TODO: generalize this to handle other sample widths
assert sampwidth == 2
fmt = 'h'
dtype = numpy.int16
ys = numpy.fromstring(z_str, dtype=dtype)
wave = Wave(ys, framerate)
return wave
def read_wave(filename='sound.wav'):
"""Reads a wave file.
filename: string
returns: Wave
"""
fp = open_wave(filename, 'r')
nchannels = fp.getnchannels()
nframes = fp.getnframes()
sampwidth = fp.getsampwidth()
framerate = fp.getframerate()
z_str = fp.readframes(nframes)
fp.close()
dtype_map = {1:numpy.int8, 2:numpy.int16, 3:'special', 4:numpy.int32}
if sampwidth not in dtype_map:
raise ValueError('sampwidth %d unknown' % sampwidth)
if sampwidth == 3:
xs = numpy.fromstring(z_str, dtype=numpy.int8).astype(numpy.int32)
ys = (xs[2::3] * 256 + xs[1::3]) * 256 + xs[0::3]
else:
ys = numpy.fromstring(z_str, dtype=dtype_map[sampwidth])
# if it's in stereo, just pull out the first channel
if nchannels == 2:
ys = ys[::2]
wave = Wave(ys, framerate)
return wave
def read_wave(filename='sound.wav'):
"""Reads a wave file.
filename: string
returns: Wave
"""
fp = open_wave(filename, 'r')
nchannels = fp.getnchannels()
nframes = fp.getnframes()
sampwidth = fp.getsampwidth()
framerate = fp.getframerate()
z_str = fp.readframes(nframes)
fp.close()
dtype_map = {1:np.int8, 2:np.int16, 3:'special', 4:np.int32}
if sampwidth not in dtype_map:
raise ValueError('sampwidth %d unknown' % sampwidth)
if sampwidth == 3:
xs = np.fromstring(z_str, dtype=np.int8).astype(np.int32)
ys = (xs[2::3] * 256 + xs[1::3]) * 256 + xs[0::3]
else:
ys = np.fromstring(z_str, dtype=dtype_map[sampwidth])
# if it's in stereo, just pull out the first channel
if nchannels == 2:
ys = ys[::2]
#ts = np.arange(len(ys)) / framerate
wave = Wave(ys, framerate=framerate)
wave.normalize()
return wave
def play_midi(code:int):
wavefile = WAV_FILE_TEMPLATE.format(code)
if PYGAME:
pygame.mixer.init()
pygame.mixer.music.load(wavefile)
pygame.mixer.music.play()
elif UNIX:
with open_wave(wavefile, 'rb') as fd, open_oss('/dev/dsp', 'w') as dsp:
nc, sw, fr, nf, comptype, compname = fd.getparams()
dsp.setparameters(AFMT_S16_NE, nc, fr)
data = fd.readframes(nf)
dsp.write(data)
else:
winsound.PlaySound(wavefile, winsound.SND_FILENAME)
def __init__(self, filename="sound.wav", framerate=11025):
self.filename = filename
self.framerate = framerate
self.nchannels = 1
self.sampwidth = 2
self.bits = self.sampwidth * 8
self.bound = 2**(self.bits - 1) - 1
self.fmt = "h"
self.dtype = np.int16
self.fp = open_wave("wavs/" + self.filename, "w")
self.fp.setnchannels(self.nchannels)
self.fp.setsampwidth(self.sampwidth)
self.fp.setframerate(self.framerate)
def __init__(self,filename='sound.wav',framerate=11025):
self.filename = filename
self.framerate=framerate
self.nchannels=1
self.sampwidth = 2
self.bits = self.sampwidth*8
self.bound = 2**(self.bits-1)-1
self.fmt='h'
self.dtype = np.int16
self.fp = open_wave(self.filename,'w')
self.fp.setnchannels(self.nchannels)
self.fp.setsampwidth(self.sampwidth)
self.fp.setframerate(self.framerate)
def write(self, filename='sound.wav'):
"""
Write a wave file.
"""
nchannels = 1
sampwidth = 2 # 16 bits
bits = sampwidth * 8;
bound = 2 ** (bits - 1) - 1
fp = open_wave(filename, 'w')
fp.setnchannels(nchannels)
fp.setsampwidth(sampwidth)
fp.setframerate(self.framerate)
zs = quantize(self.ys, bound, np.int16)
fp.writeframes(zs.tostring())
fp.close()
def __init__(self, filename='sound.wav', framerate=11025):
"""Opens the file and sets parameters.
filename: string
framerate: samples per second
"""
self.filename = filename
self.framerate = framerate
self.nchannels = 1
self.sampwidth = 2
self.bits = self.sampwidth * 8
self.bound = 2**(self.bits-1) - 1
self.fmt = 'h'
self.dtype = np.int16
self.fp = open_wave(self.filename, 'w')
self.fp.setnchannels(self.nchannels)
self.fp.setsampwidth(self.sampwidth)
self.fp.setframerate(self.framerate)
def __init__(self, filename='sound.wav', framerate=11025):
"""Opens the file and sets parameters.
filename: string
framerate: samples per second
"""
self.filename = filename
self.framerate = framerate
self.nchannels = 1
self.sampwidth = 2
self.bits = self.sampwidth * 8
self.bound = 2**(self.bits-1) - 1
self.fmt = 'h'
self.dtype = np.int16
self.fp = open_wave(self.filename, 'w')
self.fp.setnchannels(self.nchannels)
self.fp.setsampwidth(self.sampwidth)
self.fp.setframerate(self.framerate)
def read_wave(filename='sound.wav'):
"""Reads a wave file.
filename: string
returns: Wave
"""
fp = open_wave(filename, 'r')
nchannels = fp.getnchannels()
nframes = fp.getnframes()
sampwidth = fp.getsampwidth()
framerate = fp.getframerate()
z_str = fp.readframes(nframes)
fp.close()
dtype_map = {1:np.int8, 2:np.int16, 3:'special', 4:np.int32}
if sampwidth not in dtype_map:
raise ValueError('sampwidth %d unknown' % sampwidth)
if sampwidth == 3:
xs = np.fromstring(z_str, dtype=np.int8).astype(np.int32)
ys = (xs[2::3] * 256 + xs[1::3]) * 256 + xs[0::3]
else:
ys = np.fromstring(z_str, dtype=dtype_map[sampwidth])
# if it's in stereo, just pull out the first channel
ysLeft = ys[::2]
ysRight = ys[1::2]
#ts = np.arange(len(ys)) / framerate
waveLeft = Wave(ysLeft, framerate=framerate)
waveRight = Wave(ysRight, framerate=framerate)
waveLeft.normalize()
waveRight.normalize()
return waveLeft, waveRight
def read_wave(filename='sound.wav'):
# Reads a wave file
# filename: string
# return: Wave
fp = open_wave(filename, 'r')
nchannels = fp.getnchannels(
) # number of audio channels (1 for mono, 2 for stereo)
nframes = fp.getnframes() # number of audio frames
sampwidth = fp.getsampwidth() # sample width in bytes
framerate = fp.getframerate() # sampling frequency
z_str = fp.readframes(
nframes
) # reads and returns at most nframes of audio as a string of bytes
fp.close()
dtype_map = {1: np.int8, 2: np.int16, 3: 'special', 4: np.int32}
if sampwidth not in dtype_map:
raise ValueError('sampwidth %d unknown' % sampwidth)
if sampwidth == 3:
xs = np.fromstring(z_str, dtype=np.int8).astype(np.int32)
ys = (xs[2::3] * 256 + xs[1::3]) * 256 + xs[0::3]
else:
ys = np.fromstring(z_str, dtype=dtype_map[sampwidth])
# if it's in stereo, just pull out the first channel
if nchannels == 2:
ys = ys[::2]
#ts = np.arange(len(ys)) / framerate
wave = Wave(ys, framerate=framerate)
wave.normalize()
return wave
def read_wave(filename='sound.wav'):
"""Reads a wave file.
filename: string
returns: Wave
"""
fp = open_wave(filename, 'r')
nchannels = fp.getnchannels()
nframes = fp.getnframes()
sampwidth = fp.getsampwidth()
framerate = fp.getframerate()
z_str = fp.readframes(nframes)
fp.close()
dtype_map = {1: numpy.int8, 2: numpy.int16}
assert sampwidth in dtype_map
ys = numpy.fromstring(z_str, dtype=dtype_map[sampwidth])
wave = Wave(ys, framerate)
return wave
def read_wave(filename='sound.wav'):
"""Reads a wave file.
filename: string
returns: Wave
"""
fp = open_wave(filename, 'r')
nchannels = fp.getnchannels()
nframes = fp.getnframes()
sampwidth = fp.getsampwidth()
framerate = fp.getframerate()
z_str = fp.readframes(nframes)
fp.close()
dtype_map = {1:numpy.int8, 2:numpy.int16}
assert sampwidth in dtype_map
ys = numpy.fromstring(z_str, dtype=dtype_map[sampwidth])
wave = Wave(ys, framerate)
return wave
def read_wave(filename="sound.wav"):
"""Reads a wave file.
filename: string
returns: Wave
"""
fp = open_wave(filename, "r")
nchannels = fp.getnchannels()
nframes = fp.getnframes()
sampwidth = fp.getsampwidth()
framerate = fp.getframerate()
z_str = fp.readframes(nframes)
fp.close()
dtype_map = {1: np.int8, 2: np.int16, 3: "special", 4: np.int32}
if sampwidth not in dtype_map:
raise ValueError("sampwidth %d unknown" % sampwidth)
if sampwidth == 3:
xs = np.fromstring(z_str, dtype=np.int8).astype(np.int32)
ys = (xs[2::3] * 256 + xs[1::3]) * 256 + xs[0::3]
else:
ys = np.fromstring(z_str, dtype=dtype_map[sampwidth])
# if it's in stereo, just pull out the first channel
if nchannels == 2:
ys = ys[::2]
ts = np.arange(len(ys)) / framerate
wave = Wave(ys, ts, framerate)
wave.normalize()
return wave
from wave import open as open_wave
import numpy as np
from filter import ofb
import wave
#import matplotlib.pyplot as plt
#import glob
#from struct import pack
#import scipy.io.wavfile
from wave import open as open_wave
maskFile = input("Please choose a mask sound from the following: ocean, creek, woods, rain \n")
#for filename in glob.glob('*.wav'):
#myAudioLeft, myAudioRight = thinkdsp.read_wave("ocean.wav")
fp = open_wave("../mask/wav/unfiltered/"+maskFile+".wav", 'r')
z_str = fp.readframes(fp.getnframes())
fp.close()
ys = np.fromstring(z_str, dtype=np.int16)
# if it's in stereo, just pull out the first channel
myAudioLeft = ys[::2]
myAudioRight = ys[1::2]
audio_len = myAudioLeft.size
fs = 44100
fade_len = 3*fs
#maxVol=2**15-1.0
kaiser = np.kaiser(2*fade_len, 5)
plt.show()
ex6.savefig('lab1fig6-1.pdf', bbox_inches='tight')
# Exercise 7: opening and displaying .wav file.
print('\n#### Exercise 7: plotting a .wav file.\n')
print('''
\n This code will download the required file and it will delete it at the end
\n I could\'t achieve the same goal using librosa.
\n That doesn\'t mean this library is not able to do it.
''')
file_path = './ex7.wav'
if not os.path.exists(file_path):
URL.urlretrieve('https://tinyurl.com/196959apples', './ex7.wav')
fp = open_wave(file_path, 'r')
strframes = fp.readframes(fp.getnframes())
fp.close()
os.remove(file_path)
ys = np.fromstring(strframes, dtype=np.int16)
ts = np.arange(len(ys)) / fp.getframerate()
plt.plot(ts, ys, 'b-')
plt.xlabel('time(s)', fontsize=16)
plt.ylabel('amplitude', fontsize=16)
plt.show()
from wave import open as open_wave
import numpy
import pandas as pd
dimension = numpy.zeros(410)
for i in range(1, 10):
waveFile = open_wave(
"/Users/ashwini/Downloads/heartdisease-data/training-a/a000" + str(i) +
".wav", 'rb')
nframes = waveFile.getnframes()
wavFrames = waveFile.readframes(nframes)
ys = numpy.fromstring(wavFrames, dtype=numpy.int16)
dimension[i] = ys.shape[0]
for i in range(10, 100):
waveFile = open_wave(
"/Users/ashwini/Downloads/heartdisease-data/training-a/a00" + str(i) +
".wav", 'rb')
nframes = waveFile.getnframes()
wavFrames = waveFile.readframes(nframes)
ys = numpy.fromstring(wavFrames, dtype=numpy.int16)
dimension[i] = ys.shape[0]
for i in range(100, 410):
waveFile = open_wave(
"/Users/ashwini/Downloads/heartdisease-data/training-a/a0" + str(i) +
".wav", 'rb')
nframes = waveFile.getnframes()
wavFrames = waveFile.readframes(nframes)
ys = numpy.fromstring(wavFrames, dtype=numpy.int16)
dimension[i] = ys.shape[0]