Aiortc 将广播制作人与听众联系起来

问题描述

我计划制作一个音频 DJ 电台广播节目，例如 mixxx。

唯一的问题是：如何提高 PyAv 音频质量？

from av import AudioFrame
from pydub import AudioSegment
import pyaudio
import av
class RadioOutputStream:
    def __init__(self):
        self.FORMAT = pyaudio.paInt16
        self.CHANNELS = 1
        self.RATE = 44100
        self.CHUNK = 1024

        
        self.p = pyaudio.PyAudio()
        self.player = self.p.open(format=self.FORMAT,channels=self.CHANNELS,rate=self.RATE,output=True,frames_per_buffer=self.CHUNK)
        self.mic_stream = self.p.open(format=self.FORMAT,input=True,frames_per_buffer=self.CHUNK)
        
        
        self.sound1 = AudioSegment.from_file(r"ΑΓΙΑ ΣΚΕΠΗ.mp3")
        self.sound1_channels = self.sound1.split_to_mono()
        self.sound1 = self.sound1_channels[0].overlay(self.sound1_channels[1])
        self.sound1 = self.sound1 - 30 # make sound1 quiter 30dB
        
        self.codec = av.CodecContext.create('pcm_s16le','r')
        self.codec.sample_rate = self.RATE
        #self.codec.sample_fmt = AV_SAMPLE_FMT_S16
        self.codec.channels = 1;
        #self.codec.channel_layout = "mono";
        
    def run_stream(self):
        chunk_number = 0
        while(True):
            mic_data = self.mic_stream.read(self.CHUNK)
            mic_sound = AudioSegment(mic_data,sample_width=2,channels=1,frame_rate=self.RATE)
            mic_sound_duration = len(mic_sound)
            
            if(len(self.sound1)>(chunk_number+1)*mic_sound_duration):
                sound1_part = self.sound1[chunk_number*mic_sound_duration:(chunk_number+1)*mic_sound_duration]
            elif(len(self.sound1)>(chunk_number)*mic_sound_duration):
                sound1_part = self.sound1[chunk_number*mic_sound_duration:]
            else:
                #replay
                times_played = int((chunk_number+1)*mic_sound_duration/len(self.sound1))
                time_start = ((chunk_number)*mic_sound_duration)-(times_played*len(self.sound1))
                time_end = ((chunk_number+1)*mic_sound_duration)-(times_played*len(self.sound1))
                sound1_part = self.sound1[time_start:time_end]
                #sound1_part = AudioSegment.silent()
            
            
            
            
            self.mix_sound = sound1_part.overlay(mic_sound)
            #self.player.write(self.mix_sound.raw_data) high quality
            
            
            packet = av.Packet(self.mix_sound.raw_data)
            self.audio_frame = self.codec.decode(packet)[0]
            
            
            #code if i want to play AV AudioFrame (low quality problem)
            for p in self.audio_frame.planes:
                data = p.to_bytes()
                data_segment = AudioSegment(data,channels=2,frame_rate=48000).set_frame_rate(44100)
                #low quality
                self.player.write(data_segment.raw_data)
            
            
            chunk_number = chunk_number+1
            
radio_stream = RadioOutputStream()
radio_stream.run_stream()

解决方法

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