python将文字转成语音生成器_Python制作任意音频文件

本文件示例了如何用python脚本来生成任意波形的Wav音频文件，用来做为声音源帮助听力产品的测试。

python中需要安装wave、nump、scipy库；

下面为一生成无声音的脚本：

import wave

import numpy as np

import scipy.signal as signal

# sample frequency, unit = hz

frameRate = 16000

time = 60 # unit = second

volumn = 0 # 30000

# 通过调用 scipy.signal库中的 chrip 函数，产生长度为10秒、取样频率为44.1kHz、100Hz到1kHz的频率扫描波

t = np.arange(0, time, 1.0 / frameRate)

#

# Save time line into xls file.

#

'''

ft = open("ti.xls", "w")

for item in t:

ft.write(str(item)+'\n')

ft.close()

'''

# chirp(t,f0,t1,f1,method='linear', phi=0, vertex_zero=True)

# t = array of time

# f0 = start frequency from t[0]

# t1 = end time

# f1 = frequency of t1

# for linear method: f(t) = f0 + (f1 - f0) * t/t1

wave_data = signal.chirp(t, 100, time, 100, method='linear') * volumn

# 由于chrip函数返回的数组为float64型，需要调用数组的astype方法将其转换为short型。

wave_data = wave_data.astype(np.short)

#

# Save time line into xls file.

#

maxVal = 0

minVal = 32768

fwave = open("wave.xls", "w")

for item in wave_data:

fwave.write(str(item)+'\n')

if maxVal < item:

maxVal = item

if minVal > item:

minVal = item

fwave.close()

print('[min,max] value=[' + str(minVal) + ',' + str(maxVal) + ']' )

'''

#data = 2+np.sin(np.random.rand(160000)) # random noise

data = 2+np.sin(np.array(range(160000))) # sin wave sound

data = data*10000 # increase volumn

data = data.astype(np.short) # convert wave dat to int16 from float64

print(type(data[0]))

# print(len(data))

# print(data[:3])

'''

f = wave.open(r"000.wav", "wb")

# 配置声道数、量化位数和取样频率

f.setnchannels(1) # 声道数

f.setsampwidth(2) # 量化位数

f.setframerate(frameRate) # 采样频率

f.writeframes(wave_data.tostring()) # 将wav_data转换为二进制数据写入文件

f.close()