此问题与我的其他问题有关:silence out regions of audio based on a list of time stamps , using sox and python
如果matrix=outer(matext_vec,matext_, FUN=myfun)
新列表q'应为q= [[0.0,4.0], [10.0,12.0], [15.0,20.0], [21.0,28.0], [32.0,36.0],[41.0,44.0]]
我所做的是以下内容:
[4.0,10.0],[12.0,15.0],[20.0,21.0],[28.0,32.0], [36.0,41.0]]
输出:
import numpy
q= [[0.0,4.0], [10.0,12.0], [15.0,20.0], [21.0,28.0], [32.0,36.0],[41.0,44.0]]
x= []
print "in between"
for t in range(len(q)-1):
a,b=q[t][1],q[t+1][0]
x.append([a,b])
for i in x:
print i
更新:我想在我的^输出中追加两个段。
上下文:这些细分是时间戳。
假设片段没有从零开始,而是从3.0开始
[4.0, 10.0]
[12.0, 15.0]
[20.0, 21.0]
[28.0, 32.0]
[36.0, 41.0]
并且文件以50.0结束。
在原始输出中,我想添加区域:q= [[3.0,4.0], [10.0,12.0], [15.0,20.0], [21.0,28.0], [32.0,36.0],[41.0,44.0]]
和[0.0,3]
这样我也可以将这些区域排除在外。
为此我只是做了:
[44.0,50.0]
输出:
import numpy
speaker_segments= [[3.0,4.0], [10.0,12.0], [15.0,20.0], [21.0,28.0], [32.0,36.0],[41.0,44.0]]
segments_to_silence = []
starting= 0.0
end= 50.0
# simple output
for t in range(len(speaker_segments)-1):
a, b = speaker_segments[t][1],speaker_segments[t+1][0]
segments_to_silence.append([a, b])
val = len(speaker_segments)
y= speaker_segments[val-1][1]
# appending end of segment item and end of file item to output i.e [44.0,50.0].
if end >y:
a,b =y,end
segments_to_silence.append([a,b])
print "appending end regions"
print segments_to_silence
# appending the starting portions 0.0 - 3.0 :
f=speaker_segments[0][0]
if starting < f:
a=starting
b=f
segments_to_silence.append([a,b])
print "appending beginning regions"
print segments_to_silence
是否可以将附加的[0.0,3.0]移动到开头?这样它们就处于一个排序列表中并按照choronological顺序排列?
更新2: 我只需重新排序if条件,使[0.0,x.x]先行,然后是中间,最后是文件末尾[50.0]。
谢谢大家的快速回复! :)
答案 0 :(得分:5)
使用zip
和list comprehension,您可以执行以下操作:
x = [[a[1], b[0]] for a, b in zip(q, q[1:])]
当你使用python 2时,最好使用zip
的迭代器版本:itertools.izip
from itertools import izip
x = [[a[1], b[0]] for a, b in izip(q, q[1:])]
编辑:与itertools.islice
一样,Jean-François在评论中指出:
from itertools import islice, izip
x = [[a[1], b[0]] for a, b in izip(q, islice(q, 1, None))]
答案 1 :(得分:4)
你可以展平,丢弃第一个然后重新组合:
>>> q = [[0.0,4.0], [10.0,12.0], [15.0,20.0], [21.0,28.0], [32.0,36.0],[41.0,44.0]]
>>> from itertools import chain, islice
>>> list(map(list, zip(*2*(islice(chain(*q), 1, None),))))
[[4.0, 10.0], [12.0, 15.0], [20.0, 21.0], [28.0, 32.0], [36.0, 41.0]]
Python 2版本:
>>> from itertools import chain, islice, izip
>>> map(list, izip(*2*(islice(chain(*q), 1, None),)))
答案 2 :(得分:0)
您还可以使用itertools.groupby
:
q= [[0.0,4.0], [10.0,12.0], [15.0,20.0], [21.0,28.0], [32.0,36.0],[41.0,44.0]]
new_q = list(itertools.chain.from_iterable(q))
n = [(a, list(b)) for a, b in itertools.groupby(sorted(new_q, key=lambda x:any(a == x for a, b in q)), key=lambda x:any(a == x for a, b in q))]
final_data = [[a, b] for a, b in zip(dict(n)[0], dict(n)[1][1:])]
输出:
[[4.0, 10.0], [12.0, 15.0], [20.0, 21.0], [28.0, 32.0], [36.0, 41.0]]