リアルタイム音声の再生（プレイバック）プログラムの開発(v0.1)

		def defocus(event):
			event.widget.master.focus_set()

		class input_device:
			def __init__(self, name, index):
				self.name = name
				self.index = index
		

		def playback():
			p = pyaudio.PyAudio()
			streamIn = p.open(format=FORMATIN, channels=CHANNELS,
						 rate=RATE, input=True, input_device_index=INDEX_SELECT,
						 frames_per_buffer=CHUNK)
			streamOut = p.open(format=FORMATOUT, channels=CHANNELS,
						 rate=RATE, output=True, output_device_index=4,
						 frames_per_buffer=CHUNK)
			while True:
				in_data = streamIn.read(CHUNK)
				streamOut.write(in_data)
		

		def index_select():
			global INDEX_SELECT
			if microphone_combobox.get() == devices[0].name:
				INDEX_SELECT = devices[0].index
			elif microphone_combobox.get() == devices[1].name:
				INDEX_SELECT = devices[1].index
			elif microphone_combobox.get() == devices[2].name:
				INDEX_SELECT = devices[2].index
		

		def button_state():
			global button1_num_clicked
			if (
			microphone_combobox.get() != devices[0].name and
			microphone_combobox.get() != devices[1].name and
			microphone_combobox.get() != devices[2].name
			):
				alert()
			else:
				button1_num_clicked += 1
				change_text()
				index_select()
				t1 = threading.Thread(target=playback,daemon = True)
				t1.start()
				if button1_num_clicked % 2 == 0:
					window.destroy()
		
		

import pyaudio
import threading
from tkinter import messagebox
from tkinter import ttk
from mttkinter import mtTkinter as tk

#選択表示(combobox)を使いやすくする
def defocus(event):
    event.widget.master.focus_set()

#入力デバイスの扱いが簡単になる
class input_device:
    def __init__(self, name, index):
        self.name = name
        self.index = index

#リアルタイムでのプレイバックを行う（録音した音すぐに再生する）
def playback():
    p = pyaudio.PyAudio()
    streamIn = p.open(format=FORMATIN, channels=CHANNELS,
                        rate=RATE, input=True, input_device_index=INDEX_SELECT,
                        frames_per_buffer=CHUNK)
    streamOut = p.open(format=FORMATOUT, channels=CHANNELS,
                        rate=RATE, output=True, output_device_index=4,
                        frames_per_buffer=CHUNK)
    while True:
        in_data = streamIn.read(CHUNK)
        streamOut.write(in_data)

def alert():
    messagebox.showinfo(title= 'Error',message='Please select an input device')

def change_text():
    button1['text'] = 'End recording'

#「Choose a microphone」というcomboboxで選択した入力デバイスを記録しplayback()に送信
def index_select():
    global INDEX_SELECT
    if microphone_combobox.get() == devices[0].name:
        INDEX_SELECT = devices[0].index
    elif microphone_combobox.get() == devices[1].name:
        INDEX_SELECT = devices[1].index
    elif microphone_combobox.get() == devices[2].name:
        INDEX_SELECT = devices[2].index

#入力デバイスが選択されない限り、再生が始まらないようにする
def button_state():
    global button1_num_clicked
    if (
    microphone_combobox.get() != devices[0].name and 
    microphone_combobox.get() != devices[1].name and 
    microphone_combobox.get() != devices[2].name
    ):
        alert()
    else:
        button1_num_clicked += 1
        change_text()
        index_select()
#daemonは「End recording」がクリックされた後、プログラムが確実に停止
        t1 = threading.Thread(target=playback,daemon = True) 
        t1.start()
#「End recording」は、入力デバイスを選択してから、2回目のクリックになるので、プラグラムが停止
        if button1_num_clicked % 2 == 0:
            window.destroy()

#プレイバックのメインループに入る
if __name__ == '__main__':
#プレイバック設定の選択
    button1_num_clicked = 0
    devices = []
    buttonClicked = False
    p = pyaudio.PyAudio()
    info = p.get_host_api_info_by_index(0)
    numdevices = info.get('deviceCount')
    FORMATIN = pyaudio.paInt16
    FORMATOUT = pyaudio.paInt16
    CHANNELS = 1
    RATE = 44100
    CHUNK = 1024

    window = tk.Tk()
    window.title('Real-time audio playback v0.1')
    window.geometry('500x150')

#アクセスできる入力デバイスの確認
#最初の3つのデバイスがcomboboxに送信
    for i in range(0, numdevices):
        if (p.get_device_info_by_host_api_device_index(0, i).get('maxInputChannels')) > 0:
            devices.append(input_device(p.get_device_info_by_host_api_device_index(0, i).get('name'), i))

#comboboxとその他ボタンの設定、調整
    microphone = tk.Label(window, text="Choose a microphone")
    microphone_combobox = ttk.Combobox(window, values = [devices[0].name,devices[1].name,devices[2].name])
    microphone.place(x=80, y=40)
    microphone_combobox.place(x=260, y=40)
    microphone_combobox.bind("", defocus)

    button1 = tk.Button(window, text="Start recording", command=button_state)
    button1.place(x=200, y=80)

    window.mainloop()