Re: door bell like sound effect

[Anders Andersson <pipatron@gmail.com>]

On Wed, Aug 30, 2023 at 12:50 PM Karl Vogel <vogelke@pobox.com> wrote:
>
> Out of morbid curiosity (and boredom), I started wondering what types of
> audio files I had on my systems.  I ran "file --mime-type" on 6.8 million
> files, looked for "audio/whatever" and got the file extensions.
>
>     Extension  MIME-type
>     ---------------------------
>     .8svx      audio/x-aiff
>     .aif       audio/x-aiff
>     .aifc      audio/x-aiff
>     .aiff      audio/x-aiff
>     .ape       audio/x-ape
>     .arm       audio/amr
>     .au        audio/basic
>     .flac      audio/flac
>     .m4a       audio/x-m4a
>     .mp3       audio/mpeg
>     .mpc       audio/x-musepack
>     .oga       audio/ogg
>     .ogg       audio/ogg
>     .opus      audio/ogg
>     .ra        audio/x-pn-realaudio
>     .voc       audio/x-unknown
>     .wav       audio/x-wav
>
> If nothing else, it's faster to run "locate" and look for file extensions;
> running "file" on that much crap took nearly 9 hours.

I got curious so I performed the same exercise on 2737754 files (18
TB) taking over 2.5 hours:

real    159m40.601s
user    38m47.758s
sys    16m34.408s

I realized that it did it twice because of a snapshot so it's only
half the files, but here's the result:

1 ft audio/x-mod
1 mid audio/midi
2 ac3 audio/vnd.dolby.dd-raw
2 data audio/mpeg
2 opus audio/ogg
4 3gp audio/x-m4a
4 ape audio/x-ape
4 it audio/x-mod
5 m4a audio/x-m4a
16 snd audio/x-aiff
20 t audio/x-aiff
25 mp3 audio/x-wav
84 wav audio/x-wav
104 s audio/x-aiff
115 ogg audio/ogg
248 xm audio/x-mod
768 b audio/x-aiff
916 a audio/x-aiff
11805 flac audio/flac
26521 mp3 audio/mpeg
74874 mod audio/x-mod

Notably it's missing 52884 .sid files which 'file' did not recognize,
and a number of NES and SNES audio files.