Objective c 保存后是否实时增加录制的音量？

我使用python制作了一个原型，以实时增加音频信号的音量。它通过使用

new_data=audioop.mul（data，4，4）

工作，其中“data”是流媒体中Pyaudio的块

现在，我必须在ObjectiveC中应用类似的方法，即使在搜索之后，我也无法找到它。如何实现目标C？在目标C中，我们对数据流有这样的控制吗？如果不能，记录的样本量是否可以增加

import pyaudio
import wave
import audioop
import sys


FORMAT = pyaudio.paInt16
CHANNELS = 1
RATE = 44100
CHUNK = 1024
RECORD_SECONDS = 7
WAVE_OUTPUT_FILENAME1 = sys.argv[1]
WAVE_OUTPUT_FILENAME2 = sys.argv[2]
device_index = 2

print("----------------------record device list---------------------")
audio = pyaudio.PyAudio()
print(audio)
info = audio.get_host_api_info_by_index(0)
numdevices = info.get('deviceCount')
for i in range(0, numdevices):
        if (audio.get_device_info_by_host_api_device_index(0, i).get('maxInputChannels')) > 0:
            print ("Input Device id ", i, " - ", audio.get_device_info_by_host_api_device_index(0, i).get('name'))

print("-------------------------------------------------------------")

index = int((input()))
print(type(index))
print("recording via index "+str(index))

stream = audio.open(format=FORMAT, channels=CHANNELS,
                rate=RATE, input=True,input_device_index = index,
                frames_per_buffer=CHUNK)
print ("recording started")
Recordframes = []
Recordframes2= []
print(int(RATE / CHUNK * RECORD_SECONDS))
for i in range(0, int(RATE / CHUNK * RECORD_SECONDS)):
    data = stream.read(CHUNK)
    new_data = audioop.mul(data, 4, 4)
    print("hshsh")
    Recordframes.append(data)
    Recordframes2.append(new_data)
# data = stream.read(CHUNK)
# print("hshsh")
# Recordframes.append(data)
# print ("recording stopped")


stream.stop_stream()
stream.close()
audio.terminate()

waveFile = wave.open(WAVE_OUTPUT_FILENAME1, 'wb')
waveFile.setnchannels(CHANNELS)
waveFile.setsampwidth(audio.get_sample_size(FORMAT))
waveFile.setframerate(RATE)
waveFile.writeframes(b''.join(Recordframes))
waveFile2 = wave.open(WAVE_OUTPUT_FILENAME2, 'wb')
waveFile2.setnchannels(CHANNELS)
waveFile2.setsampwidth(audio.get_sample_size(FORMAT))
waveFile2.setframerate(RATE)
waveFile2.writeframes(b''.join(Recordframes2))
waveFile.close()
waveFile2.close()

---

您可以使用

AVAudioEngine

（）点击原始音频数据。或者，仍然使用

AVAudioEngine

，您可以在音频图中添加

avaudioniteq

（）节点，并使用该节点提高增益

使用任何一种方法，您都可以使用

AVAudioFile

（）将数据写入文件