22.8. sndhdr
— Determine type of sound file¶
Source code: Lib/sndhdr.py
The sndhdr
provides utility functions which attempt to determine the type
of sound data which is in a file. 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
). 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'
. The sampling_rate will be either the actual
value or 0
if unknown or difficult to decode. Similarly, channels will be
either the number of channels or 0
if it cannot be determined or if the
value is difficult to decode. The value for frames will be either the number
of frames or -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.
-
sndhdr.
what
(filename)¶ Determines the type of sound data stored in the file filename using
whathdr()
. If it succeeds, returns a namedtuple as described above, otherwiseNone
is returned.Distinto en la versión 3.5: Result changed from a tuple to a namedtuple.
-
sndhdr.
whathdr
(filename)¶ Determines the type of sound data stored in a file based on the file header. The name of the file is given by filename. This function returns a namedtuple as described above on success, or
None
.Distinto en la versión 3.5: Result changed from a tuple to a namedtuple.