# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'hear-from-microphone.ui'
#
# Created by: PyQt5 UI code generator 5.15.0
#
# WARNING: Any manual changes made to this file will be lost when pyuic5 is
# run again. Do not edit this file unless you know what you are doing.
from PyQt5 import QtCore, QtGui, QtWidgets, QtMultimedia
import numpy as np
import matplotlib.pyplot as plt
import time
import sys
class Ui_Form(object):
def setupUi(self, Form):
Form.setObjectName("Form")
Form.resize(500, 500)
self.gridLayout = QtWidgets.QGridLayout(Form)
self.gridLayout.setObjectName("gridLayout")
self.pushButton = QtWidgets.QPushButton(Form)
self.pushButton.setObjectName("pushButton")
self.gridLayout.addWidget(self.pushButton, 0, 0, 1, 1)
self.frame = QtWidgets.QFrame(Form)
sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Preferred, QtWidgets.QSizePolicy.Fixed)
sizePolicy.setHorizontalStretch(0)
sizePolicy.setVerticalStretch(0)
sizePolicy.setHeightForWidth(self.frame.sizePolicy().hasHeightForWidth())
self.frame.setSizePolicy(sizePolicy)
self.frame.setMinimumSize(QtCore.QSize(0, 5))
self.frame.setMaximumSize(QtCore.QSize(16777215, 5))
self.frame.setFrameShape(QtWidgets.QFrame.StyledPanel)
self.frame.setFrameShadow(QtWidgets.QFrame.Raised)
self.frame.setObjectName("frame")
self.frame_2 = QtWidgets.QFrame(self.frame)
self.frame_2.setGeometry(QtCore.QRect(0, 0, 0, 16))
sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Fixed, QtWidgets.QSizePolicy.Expanding)
sizePolicy.setHorizontalStretch(0)
sizePolicy.setVerticalStretch(0)
sizePolicy.setHeightForWidth(self.frame_2.sizePolicy().hasHeightForWidth())
self.frame_2.setSizePolicy(sizePolicy)
self.frame_2.setMinimumSize(QtCore.QSize(0, 0))
self.frame_2.setStyleSheet("QFrame{\n"
" background-color:blue;\n"
"}")
self.frame_2.setFrameShape(QtWidgets.QFrame.StyledPanel)
self.frame_2.setFrameShadow(QtWidgets.QFrame.Raised)
self.frame_2.setObjectName("frame_2")
self.gridLayout.addWidget(self.frame, 1, 0, 1, 1)
self.pushButton_2 = QtWidgets.QPushButton(Form)
self.pushButton_2.setEnabled(False)
self.pushButton_2.setObjectName("pushButton_2")
self.gridLayout.addWidget(self.pushButton_2, 2, 0, 1, 1)
self.retranslateUi(Form)
QtCore.QMetaObject.connectSlotsByName(Form)
self.pushButton.clicked.connect(lambda state:self.play_from_microphone(Form))
self.pushButton_2.clicked.connect(lambda state:self.stop_player(Form))
self.start_plotting()
def retranslateUi(self, Form):
_translate = QtCore.QCoreApplication.translate
Form.setWindowTitle(_translate("Form", "Hear from microphone"))
self.pushButton.setText(_translate("Form", "Click to hear microphone input"))
self.pushButton_2.setText(_translate("Form", "Click to stop hearing microphone input"))
def play_from_microphone(self,Form):
self.pushButton.setEnabled(False)
self.buffer_min_value = 0
self.buffer_max_value = 0
self.mid_strength = 0
self.min_value = 5
self.max_value = 14
input_devices_qt = QtMultimedia.QAudioDeviceInfo.availableDevices(QtMultimedia.QAudio.AudioInput)
output_devices_qt = QtMultimedia.QAudioDeviceInfo.availableDevices(QtMultimedia.QAudio.AudioOutput)
self.m_play_called = False
self.m_buffer = QtCore.QByteArray()
self.m_buffer_requested = True
#self.m_time_to_buffer = 1000
#self.MAX_BUFFERED_TIME = 1000
self.m_time_to_buffer = 50
self.MAX_BUFFERED_TIME = 100
self.m_input_device_info = QtMultimedia.QAudioDeviceInfo.defaultInputDevice()
self.m_output_device_info = QtMultimedia.QAudioDeviceInfo.defaultOutputDevice()
self.format = QtMultimedia.QAudioFormat()
self.format.setCodec("audio/pcm")
self.format.setSampleRate(44100)
self.format.setChannelCount(1)
self.format.setSampleSize(16)
self.format.setByteOrder(QtMultimedia.QAudioFormat.LittleEndian)
self.format.setSampleType(QtMultimedia.QAudioFormat.SignedInt)
self.m_audio_input = QtMultimedia.QAudioInput(input_devices_qt[0],self.format)
self.m_input_device = self.m_audio_input.start()
self.m_audio_input.resume()
self.plot_pause = False
self.m_audio_input.setNotifyInterval(100)
self.m_audio_input.notify.connect(lambda: self.send_input_to_buffer(Form))
if (self.format.sampleRate() >= 44100):
self.internal_buffer_size = (1024 * 10) * self.format.channelCount()
elif (self.format.sampleRate() >= 24000):
self.internal_buffer_size = (1024 * 6) * self.format.channelCount()
else:
self.internal_buffer_size = (1024 * 4) * self.format.channelCount()
self.m_audio_output = QtMultimedia.QAudioOutput(self.m_output_device_info, self.format)
self.m_audio_output.setBufferSize(self.internal_buffer_size)
self.m_size_to_buffer = int(self.timeToSize_1())
self.m_max_size_to_buffer = self.m_size_to_buffer + int(self.timeToSize_2())
self.m_output_device = self.m_audio_output.start()
self.timer_play = QtCore.QTimer(Form)
self.timer_play.setTimerType(QtCore.Qt.PreciseTimer)
self.timer_play.timeout.connect(lambda:self.preplay(Form))
self.timer_play.start(10)
self.timer_verifier = QtCore.QTimer(Form)
self.timer_verifier.timeout.connect(self.verifier)
self.timer_verifier.start(max(self.m_time_to_buffer, 10))
self.pushButton_2.setEnabled(True)
def verifier(self):
if (self.m_buffer.size() >= self.m_max_size_to_buffer):
self.m_buffer.clear()
def timeToSize_1(self):
return ((self.format.channelCount() * (self.format.sampleSize() / 8) * self.format.sampleRate()) * self.m_time_to_buffer / 1000)
def timeToSize_2(self):
return ((self.format.channelCount() * (self.format.sampleSize() / 8) * self.format.sampleRate()) * self.MAX_BUFFERED_TIME / 1000)
def send_input_to_buffer(self,Form):
bytes_ready = self.m_audio_input.bytesReady()
if(type(bytes_ready) == int and bytes_ready>0):
data = self.m_input_device.readAll()
self.plot_data(data)
self.m_buffer.append(data)
#for sample in data:
# value = int.from_bytes(sample, byteorder='little', signed=True)
self.calculate_mid_strength()
self.preplay(Form)
def calculate_mid_strength(self):
samples = 0
total = 0
for sample in self.m_buffer:
samples = samples + 1
value = int.from_bytes(sample, byteorder='little', signed=True)
value = abs(value)
total = total + value
self.mid_strength = total/samples
mid_strength_percent = abs(self.mid_strength-self.min_value)/(abs(self.max_value-self.min_value))
if(mid_strength_percent<0):
mid_strength_percent = 0
elif(mid_strength_percent>1):
mid_strength_percent = 1
self.frame_width = self.frame.geometry().width()
normalized_value = int(self.frame_width*mid_strength_percent)
self.frame_2.setGeometry(QtCore.QRect(0, 0, normalized_value, 16))
stop_red = 255
stop_green = int(255*(1-mid_strength_percent))
self.frame_2.setStyleSheet("QFrame{\n"
" background-color:qlineargradient(spread:pad, x1:0, y1:0, x2:1, y2:0, stop:0 rgba(255, 255, 0, 255), stop:1 rgba("+str(stop_red)+", "+str(stop_green)+", 0, 255))\n"
"}")
def preplay(self,Form):
if(self.m_play_called==False):
self.m_play_called = True
self.timer = QtCore.QTimer(Form)
self.timer.setSingleShot(True)
self.timer.singleShot(0, self.sound_microphone)
def sound_microphone(self):
self.m_play_called = False
if self.m_buffer.isEmpty():
self.m_buffer_requested = True
return
elif self.m_buffer.size() < self.m_size_to_buffer:
if self.m_buffer_requested:
return
else:
self.m_buffer_requested = False
readlen = int(self.m_audio_output.periodSize())
chunks = int(self.m_audio_output.bytesFree() / readlen)
while (chunks>0):
samples = self.m_buffer.mid(0, readlen)
len = samples.size()
self.m_buffer.remove(0, len)
if (len>0):
if(self.m_audio_output.state()!=2):
self.m_output_device.write(samples)
else:
return 1
if (len != readlen):
break;
chunks = chunks - 1
def stop_player(self,Form):
self.m_audio_input.stop()
self.m_audio_output.stop()
self.pushButton.setEnabled(True)
self.pushButton_2.setEnabled(False)
self.frame_2.setGeometry(QtCore.QRect(0, 0, 0, 16))
def start_plotting(self):
self.i=0
self.f,self.ax = plt.subplots(1)
self.x = np.arange(10000)
self.y = np.arange(10000)
self.li, = self.ax.plot(self.x, self.y)
self.ax.set_xlim(0,1000)
self.ax.set_ylim(-300,300)
self.ax.set_title("Raw Audio Signal")
# Show the plot, but without blocking updates
plt.pause(0.01)
plt.tight_layout()
self.keep_going = True
self.audio_data_len = 0
def plot_data(self,in_data):
# get and convert the data to float
audio_data = np.frombuffer(in_data, np.int16)
self.li.set_xdata(np.arange(len(audio_data)))
#self.audio_data_len = self.audio_data_len+len(audio_data)
self.li.set_ydata(audio_data)
plt.pause(0.01)
if __name__ == "__main__":
app = QtWidgets.QApplication(sys.argv)
app.addLibraryPath(r"C:/Users/Χρήστος/AppData/Local/Programs/Python/Python38/Lib/site-packages/pyqt5_tools/Qt/plugins")
app.addLibraryPath(r"C:/Users/Χρήστος/AppData/Local/Programs/Python/Python38/lib/site-packages/PyQt5/Qt/plugins")
app.setStyle("Fusion")
Form = QtWidgets.QWidget()
ui = Ui_Form()
ui.setupUi(Form)
Form.show()
sys.exit(app.exec_())
上面的代码：
在3）中有问题。我希望更新是实时的。 我也想更新x轴（输入datetime.now（）。strformat（....）
任何建议都会有用。