如何使用 Ruby 或 Python 创建一系列高低音蜂鸣声? [英] How do I create a series of high- and low-pitch beeps using Ruby or Python?

问题描述

我想在固定时间创建一系列低音和高音蜂鸣声.例如:

I want to create a series of a low- and high-pitch beeps at fixed times. For example:

• 150 毫秒的高音蜂鸣声
• 在 151 毫秒时发出低沉的哔哔声
• 在 200 毫秒时发出低沉的哔哔声
• 250 毫秒的高音蜂鸣

有没有办法在 Ruby 或 Python 中做到这一点?我真的不在乎输出编码是什么(.wav、.mp3、.ogg 等等)，但我确实想创建一个输出文件.

Is there a way to do this in Ruby or Python? I don't really care what the output encoding is (.wav, .mp3, .ogg, whatever), but I do want to create an output file.

推荐答案

这是 Python 中的一个函数，可以生成一个带有单个正弦波的文件:

Here's a function in Python that makes a file with a single sine wave:

# based on : www.daniweb.com/code/snippet263775.html
import math
import wave
import struct

def make_sine(freq=440, datasize=10000, fname="test.wav", framerate=44100.00):
    amp=8000.0 # amplitude
    sine_list=[]
    for x in range(datasize):
        sine_list.append(math.sin(2*math.pi * freq * ( x/frate)))
    # Open up a wav file
    wav_file=wave.open(fname,"w")
    # wav params
    nchannels = 1
    sampwidth = 2
    framerate = int(frate)
    nframes=datasize
    comptype= "NONE"
    compname= "not compressed"
    wav_file.setparams((nchannels, sampwidth, framerate, nframes, comptype, compname))
    #write on file
    for s in sine_list:
        wav_file.writeframes(struct.pack('h', int(s*amp/2)))
    wav_file.close()

frate = 44100.00 #that's the framerate
freq=987.0 #that's the frequency, in hertz
seconds = 3 #seconds of file
data_length = frate*seconds #number of frames
fname = "WaveTest2.wav" #name of file
make_sine(freq, data_length, fname) 

不是最快的代码...但如果你不需要速度，它会工作得很好！

Not the fastest code...But if you don't need speed, it will work fine!

这篇关于如何使用 Ruby 或 Python 创建一系列高低音蜂鸣声?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！