急!!!!如何通过python制作一个简单的录音机,录制自己的声音采用8k采样,16位量化编码,观察其数值?
Posted
tags:
篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了急!!!!如何通过python制作一个简单的录音机,录制自己的声音采用8k采样,16位量化编码,观察其数值?相关的知识,希望对你有一定的参考价值。
#我可以帮你写一段代码,能够录音形成wav文件,不过要分析录音文件的波形,你可以另外找#工具,比如cooledit,也很方便。from sys import byteorder
from array import array
from struct import pack
import pyaudio
import wave
THRESHOLD = 500
CHUNK_SIZE = 1024
FORMAT = pyaudio.paInt16
RATE = 44100
def is_silent(snd_data):
"Returns \'True\' if below the \'silent\' threshold"
return max(snd_data) < THRESHOLD
def normalize(snd_data):
"Average the volume out"
MAXIMUM = 16384
times = float(MAXIMUM)/max(abs(i) for i in snd_data)
r = array(\'h\')
for i in snd_data:
r.append(int(i*times))
return r
def trim(snd_data):
"Trim the blank spots at the start and end"
def _trim(snd_data):
snd_started = False
r = array(\'h\')
for i in snd_data:
if not snd_started and abs(i)>THRESHOLD:
snd_started = True
r.append(i)
elif snd_started:
r.append(i)
return r
# Trim to the left
snd_data = _trim(snd_data)
# Trim to the right
snd_data.reverse()
snd_data = _trim(snd_data)
snd_data.reverse()
return snd_data
def add_silence(snd_data, seconds):
"Add silence to the start and end of \'snd_data\' of length \'seconds\' (float)"
r = array(\'h\', [0 for i in xrange(int(seconds*RATE))])
r.extend(snd_data)
r.extend([0 for i in xrange(int(seconds*RATE))])
return r
def record():
"""
Record a word or words from the microphone and
return the data as an array of signed shorts.
Normalizes the audio, trims silence from the
start and end, and pads with 0.5 seconds of
blank sound to make sure VLC et al can play
it without getting chopped off.
"""
p = pyaudio.PyAudio()
stream = p.open(format=FORMAT, channels=1, rate=RATE,
input=True, output=True,
frames_per_buffer=CHUNK_SIZE)
num_silent = 0
snd_started = False
r = array(\'h\')
while 1:
# little endian, signed short
snd_data = array(\'h\', stream.read(CHUNK_SIZE))
if byteorder == \'big\':
snd_data.byteswap()
r.extend(snd_data)
silent = is_silent(snd_data)
if silent and snd_started:
num_silent += 1
elif not silent and not snd_started:
snd_started = True
if snd_started and num_silent > 30:
break
sample_width = p.get_sample_size(FORMAT)
stream.stop_stream()
stream.close()
p.terminate()
r = normalize(r)
r = trim(r)
r = add_silence(r, 0.5)
return sample_width, r
def record_to_file(path):
"Records from the microphone and outputs the resulting data to \'path\'"
sample_width, data = record()
data = pack(\'<\' + (\'h\'*len(data)), *data)
wf = wave.open(path, \'wb\')
wf.setnchannels(1)
wf.setsampwidth(sample_width)
wf.setframerate(RATE)
wf.writeframes(data)
wf.close()
if __name__ == \'__main__\':
print("please speak a word into the microphone")
record_to_file(\'demo.wav\')
print("done - result written to demo.wav")追问
有没有简单一点的 我还没有学到这么复杂
追答你还想要更简单的啊,我觉得哦,就我这么多年python和windows编程的经验来说,这个已经是很简单的了。如果要加上wav文件的波形展现和频谱分析的代码,那会更长更复杂。
建议你深入的学习。
python 制作录音文件
以上是关于急!!!!如何通过python制作一个简单的录音机,录制自己的声音采用8k采样,16位量化编码,观察其数值?的主要内容,如果未能解决你的问题,请参考以下文章