sndhdr — Determine type of sound file确定声音文件的类型

Source code: Lib/sndhdr.py

Deprecated since version 3.11: The sndhdr module is deprecated (see PEP 594 for details).sndhdr模块已弃用（有关详细信息，请参阅PEP 594）。

The sndhdr provides utility functions which attempt to determine the type of sound data which is in a file. sndhdr提供了实用程序函数，这些函数试图确定文件中声音数据的类型。When these functions are able to determine what type of sound data is stored in a file, they return a namedtuple(), containing five attributes: (filetype, framerate, nchannels, nframes, sampwidth). 当这些函数能够确定文件中存储的声音数据类型时，它们会返回一个namedtuple()，其中包含五个属性：（filetype、framerate、nchannels、nframes、sampwidth）。The value for type indicates the data type and will be one of the strings 'aifc', 'aiff', 'au', 'hcom', 'sndr', 'sndt', 'voc', 'wav', '8svx', 'sb', 'ub', or 'ul'. type的值表示数据类型，将是字符串'aifc'、'aiff'、'au'、'hcom'、'sndr'、'sndt'、'voc'、'wav'、'8svx'、'sb'、'ub'或'ul'之一。The sampling_rate will be either the actual value or 0 if unknown or difficult to decode. sampling_rate将是实际值，如果未知或难以解码，则为0。Similarly, channels will be either the number of channels or 0 if it cannot be determined or if the value is difficult to decode. 类似地，如果无法确定或值难以解码，则channels将为信道数或0。The value for frames will be either the number of frames or -1. frames的值将是帧数或-1。The last item in the tuple, bits_per_sample, will either be the sample size in bits or 'A' for A-LAW or 'U' for u-LAW.元组中的最后一项bits_per_sample将是以位为单位的样本大小，A-LAW为'A'，U-LAW为为'U'。

sndhdr.what(filename)

Determines the type of sound data stored in the file filename using whathdr(). 使用whathdr()确定存储在filename中的声音数据的类型。If it succeeds, returns a namedtuple as described above, otherwise None is returned.如果成功，则返回如上所述的namedtuple，否则返回None。

Changed in version 3.5:版本3.5中更改： Result changed from a tuple to a namedtuple.结果从元组更改为命名元组。

sndhdr.whathdr(filename)

Determines the type of sound data stored in a file based on the file header. 根据文件头确定存储在文件中的声音数据的类型。The name of the file is given by filename. 文件名由filename提供。This function returns a namedtuple as described above on success, or None.此函数在成功或None时返回如上所述的namedtuple。

Changed in version 3.5:版本3.5中更改： Result changed from a tuple to a namedtuple.结果从元组更改为命名元组。