我正在试着用tkinter做一个基本的录音机

import tkinter as tk
import pyaudio
import wave

class Recorder:
    def __init__(self):
        self.chunk = 1024  # 缓冲区大小
        self.format = pyaudio.paInt16  # 音频格式
        self.channels = 2  # 声道数
        self.rate = 44100  # 采样率
        self.frames = []  # 存储录制的音频帧
        self.is_recording = False

    def start_recording(self):
        self.p = pyaudio.PyAudio()  # 初始化音频对象
        self.stream = self.p.open(format=self.format,
                                  channels=self.channels,
                                  rate=self.rate,
                                  input=True,
                                  frames_per_buffer=self.chunk)
        self.is_recording = True

    def stop_recording(self):
        self.is_recording = False
        self.stream.stop_stream()
        self.stream.close()
        self.p.terminate()

    def save_recording(self, filename):
        wf = wave.open(filename, 'wb')
        wf.setnchannels(self.channels)
        wf.setsampwidth(self.p.get_sample_size(self.format))
        wf.setframerate(self.rate)
        wf.writeframes(b''.join(self.frames))
        wf.close()

    def record(self):
        while self.is_recording:
            data = self.stream.read(self.chunk)
            self.frames.append(data)

def start_recording():
    recorder.start_recording()

def stop_recording():
    recorder.stop_recording()
    filename = entry.get() + ".wav"
    recorder.save_recording(filename)

recorder = Recorder()

window = tk.Tk()

start_button = tk.Button(window, text="开始录音", command=start_recording)
start_button.pack()

stop_button = tk.Button(window, text="停止录音", command=stop_recording)
stop_button.pack()

entry = tk.Entry(window)
entry.pack()

window.mainloop()