来自Python中各种输入的实时声音合成器 [英] Realtime sound synthesizer from a varying input in Python

问题描述

我正在尝试制作一种踏板[¹]，以使变化的输入声音失真.

从地面开始，我试图在python中产生连续的声音，并在滑动滚动条(或类似的小部件)时改变这种声音的频率.

我尝试使用tkSnack python库生成声音，但是它会在生成的音调之间暂停.除了这种行为，我希望我的脚本即使声音不断变化也可以连续播放声音.

我的arduino通过简单的函数tone()[²]获得了不错的结果.延迟时间可能太短，以至于声音似乎是连续的.可以在Linux上使用python库在我的计算机上做类似的事情吗?

感谢谁会帮助我！ :)

[¹] http://en.wikipedia.org/wiki/Effects_pedal

[²] http://arduino.cc/en/Reference/Tone

解决方案

你好，我去年使用此公式制作了踏板

M = 2*D/(1-D);
x = (1+M)*(x)./(1+k*abs(x));

X =输入信号

D =失真测试一些值，例如0.1、0.5、0.9等，然后查看结果.

这可以用于实时输入线+ python + pyaudio，声音看起来像一个Overdrive ...

更新:

用Python实时编写原始踏板失真

#ederwander
import pyaudio 
import numpy as np 
import wave 

chunk = 1024 
FORMAT = pyaudio.paInt16 
CHANNELS = 1 
RATE = 8800 
K=0 
DISTORTION = 0.61

p = pyaudio.PyAudio() 

stream = p.open(format = FORMAT, 
                channels = CHANNELS, 
                rate = RATE, 
                input = True, 
                output = True, 
                frames_per_buffer = chunk) 


print "Eng Eder de Souza - ederwander" 
print "Primitive Pedal" 


while(True): 

    data = stream.read(chunk) 
    data = np.fromstring(data, dtype=np.int16)  
    M = 2*DISTORTION/(1-DISTORTION);
    data = (1+M)*(data)/(1+K*abs(data));
    data = np.array(data, dtype='int16') 
    signal = wave.struct.pack("%dh"%(len(data)), *list(data))
    stream.write(signal) 

stream.stop_stream() 
stream.close() 
p.terminate() 

更改变量失真"以查看不同的结果:

我稍微改变了我的音源来制作播放的录音样本，做了一些测试，得到了以下音频: http://www.freesound.org/people/eriatarka/sounds/15753/ 然后应用此处描述的公式，您可以在此处收听更改的文件: http://www.freesound.org/people/ederwander/sounds/146277/

I'm trying to build a sort of pedal [¹] in order to distort a varying input sound.

As I'm starting from the ground, I'm trying to generate in python a continuous sound and to vary the frequency of this sound as I slide a scrollbar (or a similar widget).

I've tried to use the tkSnack python library for the generation of the sound but it pauses between the generated tones. Instead of this behaviour, I want my script to play continuously the sound even if it is changing.

I've obtained a good result with my arduino thanks to the simple function tone() [²]. Probably the latency times are so low that the sound seems to be continuous. Is it possible to do a similar thing on my computer with python libraries on Linux?

Thanks to who is gonna help me! :)

[¹] http://en.wikipedia.org/wiki/Effects_pedal

[²] http://arduino.cc/en/Reference/Tone

解决方案

Hello i used this formula last year to build a pedal

M = 2*D/(1-D);
x = (1+M)*(x)./(1+k*abs(x));

X = input Signal

D = distortion test some values like 0.1, 0.5, 0.9, etc and see the results.

This can be used in realtime inputline + python + pyaudio, the sound looks like one Overdrive ...

Update:

Real-Time primitive pedal distortion write in Python

#ederwander
import pyaudio 
import numpy as np 
import wave 

chunk = 1024 
FORMAT = pyaudio.paInt16 
CHANNELS = 1 
RATE = 8800 
K=0 
DISTORTION = 0.61

p = pyaudio.PyAudio() 

stream = p.open(format = FORMAT, 
                channels = CHANNELS, 
                rate = RATE, 
                input = True, 
                output = True, 
                frames_per_buffer = chunk) 


print "Eng Eder de Souza - ederwander" 
print "Primitive Pedal" 


while(True): 

    data = stream.read(chunk) 
    data = np.fromstring(data, dtype=np.int16)  
    M = 2*DISTORTION/(1-DISTORTION);
    data = (1+M)*(data)/(1+K*abs(data));
    data = np.array(data, dtype='int16') 
    signal = wave.struct.pack("%dh"%(len(data)), *list(data))
    stream.write(signal) 

stream.stop_stream() 
stream.close() 
p.terminate() 

Change de Variable DISTORTION to see diferent results:

i changed a bit my source to make play recorded samples, i did Make some test, i get this audio: http://www.freesound.org/people/eriatarka/sounds/15753/ and then applied the formula described here, you can listen the changed file here: http://www.freesound.org/people/ederwander/sounds/146277/

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