https://wiki.freepascal.org/index.php?title=macOS_Sound_Utilities&feed=atom&action=history
macOS Sound Utilities - Revision history
2024-03-29T14:11:43Z
Revision history for this page on the wiki
MediaWiki 1.35.6
https://wiki.freepascal.org/index.php?title=macOS_Sound_Utilities&diff=136093&oldid=prev
Trev: /* See also */ Added entry
2020-05-08T11:31:28Z
<p><span dir="auto"><span class="autocomment">See also: </span> Added entry</span></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 11:31, 8 May 2020</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l130" >Line 130:</td>
<td colspan="2" class="diff-lineno">Line 130:</td></tr>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* [[macOS Play Alert Sound|macOS System Sound Services]]</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* [[macOS Play Alert Sound|macOS System Sound Services]]</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">* [[macOS NSSound]]</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* [[Multimedia Programming]]</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* [[Multimedia Programming]]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
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Trev
https://wiki.freepascal.org/index.php?title=macOS_Sound_Utilities&diff=131113&oldid=prev
Trev: /* See also */ Added entry
2020-01-27T04:48:34Z
<p><span dir="auto"><span class="autocomment">See also: </span> Added entry</span></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 04:48, 27 January 2020</td>
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<td colspan="2" class="diff-lineno">Line 128:</td></tr>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* [[macOS Audio Player]]</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* [[macOS Audio Player]]</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">* [[macOS Audio Recorder]]</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* [[macOS Play Alert Sound|macOS System Sound Services]]</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* [[macOS Play Alert Sound|macOS System Sound Services]]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* [[Multimedia Programming]]</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* [[Multimedia Programming]]</div></td></tr>
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Trev
https://wiki.freepascal.org/index.php?title=macOS_Sound_Utilities&diff=130145&oldid=prev
Trev: /* See also */ Added Audio category
2019-12-28T08:13:40Z
<p><span dir="auto"><span class="autocomment">See also: </span> Added Audio category</span></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 08:13, 28 December 2019</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:macOS]]</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:macOS]]</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[Category:Audio]]</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Multimedia]]</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Multimedia]]</div></td></tr>
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Trev
https://wiki.freepascal.org/index.php?title=macOS_Sound_Utilities&diff=130144&oldid=prev
Trev: /* See also */ Added Multimedia Programming link
2019-12-28T08:13:07Z
<p><span dir="auto"><span class="autocomment">See also: </span> Added Multimedia Programming link</span></p>
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</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l128" >Line 128:</td>
<td colspan="2" class="diff-lineno">Line 128:</td></tr>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* [[macOS Audio Player]]</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* [[macOS Audio Player]]</div></td></tr>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">* [[Multimedia Programming</ins>]]</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:macOS]]</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:macOS]]</div></td></tr>
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Trev
https://wiki.freepascal.org/index.php?title=macOS_Sound_Utilities&diff=130128&oldid=prev
Trev: Fixed platform template
2019-12-28T04:46:02Z
<p>Fixed platform template</p>
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Trev
https://wiki.freepascal.org/index.php?title=macOS_Sound_Utilities&diff=130127&oldid=prev
Trev: More new macOS content :-
2019-12-28T04:45:34Z
<p>More new macOS content :-</p>
<p><b>New page</b></p><div>{{Platform only|mac OS}}<br />
<br />
<br />
== Sound Utilities ==<br />
<br />
Every Apple computer running macOS comes with several little-known, command-line sound utilities which can come in very handy when you are experimenting with audio files.<br />
<br />
=== afinfo ===<br />
<br />
The Audio File Info utility prints out information about an audio file to stdout. It will display the file format, the data format, the bit rate and other useful information.<br />
<br />
Open an Applications > Utilities > Terminal and run the following command:<br />
<br />
<syntaxhighlight lang="bash"><br />
afinfo '/Applications/iPhoto.app/Contents/Resources/Music/Minuet in G.mp3'<br />
</syntaxhighlight><br />
<br />
which should provide output similar to:<br />
<br />
File: /Applications/iPhoto.app/Contents/Resources/Music/Minuet in G.mp3 <br />
File type ID: MPG3<br />
Num Tracks: 1<br />
----<br />
Data format: 2 ch, 44100 Hz, '.mp3' (0x00000000) 0 bits/channel, 0 bytes/packet, 1152 frames/packet, 0 bytes/frame<br />
no channel layout.<br />
estimated duration: 90.357550 sec<br />
audio bytes: 1807151<br />
audio packets: 3459<br />
bit rate: 160000 bits per second<br />
packet size upper bound: 1052<br />
maximum packet size: 523<br />
audio data file offset: 0<br />
optimized<br />
----<br />
<br />
As you can see, the output of afinfo provides a wealth of information about the audio file.<br />
<br />
=== afplay ===<br />
<br />
The Audio File Play utility plays an audio file to the default audio output. The volume, time, quality and playback rate can be set. <br />
<br />
Open an Applications > Utilities > Terminal and run the following command which sets the utility to play the specified file for 10 seconds at 50% volume and high quality:<br />
<br />
<syntaxhighlight lang="bash"><br />
afplay -t 10 -v 0.5 -q high '/Applications/iPhoto.app/Contents/Resources/Music/Minuet in G.mp3'<br />
</syntaxhighlight> <br />
<br />
The afplay utility is particularly useful when experimenting with compressing a file at different bit rates and listening to how the result sounds.<br />
<br />
=== afconvert ===<br />
<br />
This perhaps the most useful of the three command-line utilities. Audio File Convert will convert a source audio file to a new audio file with the specified file and data types. These are the basic arguments: <br />
<br />
afconvert -d [out data format] -f [out file format] [in file] [out file]<br />
<br />
There are other possible arguments, open a Terminal and enter the following to detail the full list of arguments:<br />
<br />
afconvert -h<br />
<br />
It supports the following audio data and file formats:<br />
<br />
'3gpp' = 3GP Audio (.3gp)<br />
data_formats: 'Qclp' 'aac ' 'aace' 'aacf' 'aacg' 'aach' <br />
'aacl' 'aacp' 'samr' <br />
'3gp2' = 3GPP-2 Audio (.3g2)<br />
data_formats: 'Qclp' 'aac ' 'aace' 'aacf' 'aacg' 'aach' <br />
'aacl' 'aacp' 'samr' <br />
'adts' = AAC ADTS (.aac, .adts)<br />
data_formats: 'aac ' 'aach' 'aacp' <br />
'ac-3' = AC3 (.ac3)<br />
data_formats: 'ac-3' <br />
'AIFC' = AIFC (.aifc, .aiff, .aif)<br />
data_formats: I8 BEI16 BEI24 BEI32 BEF32 BEF64 UI8 'ulaw' <br />
'alaw' 'MAC3' 'MAC6' 'ima4' 'QDMC' 'QDM2' <br />
'Qclp' 'agsm' <br />
'AIFF' = AIFF (.aiff, .aif)<br />
data_formats: I8 BEI16 BEI24 BEI32 <br />
'amrf' = AMR (.amr)<br />
data_formats: 'samr' 'sawb' <br />
'm4af' = Apple MPEG-4 Audio (.m4a, .m4r)<br />
data_formats: 'aac ' 'aace' 'aacf' 'aacg' 'aach' 'aacl' <br />
'aacp' 'ac-3' 'alac' 'ec-3' 'paac' 'pac3' <br />
'pec3' <br />
'm4bf' = Apple MPEG-4 AudioBooks (.m4b)<br />
data_formats: 'aac ' 'aace' 'aacf' 'aacg' 'aach' 'aacl' <br />
'aacp' 'paac' <br />
'caff' = CAF (.caf)<br />
data_formats: '.mp1' '.mp2' '.mp3' 'QDM2' 'QDMC' 'Qclp' <br />
'Qclq' 'aac ' 'aace' 'aacf' 'aacg' 'aach' <br />
'aacl' 'aacp' 'ac-3' 'alac' 'alaw' 'drms' <br />
'dvi8' 'ec-3' 'flac' 'ilbc' 'ima4' I8 BEI16 <br />
BEI24 BEI32 BEF32 BEF64 LEI16 LEI24 LEI32 <br />
LEF32 LEF64 'ms\x00\x02' 'ms\x00\x11' 'ms\x001' <br />
'opus' 'paac' 'pac3' 'pec3' 'qaac' 'qac3' <br />
'qach' 'qacp' 'qec3' 'samr' 'ulaw' 'zaac' <br />
'zac3' 'zach' 'zacp' 'zec3' <br />
'ec-3' = EC3 (.ec3)<br />
data_formats: 'ec-3' <br />
'flac' = FLAC (.flac)<br />
data_formats: 'flac' <br />
'MPG1' = MPEG Layer 1 (.mp1, .mpeg, .mpa)<br />
data_formats: '.mp1' <br />
'MPG2' = MPEG Layer 2 (.mp2, .mpeg, .mpa)<br />
data_formats: '.mp2' <br />
'MPG3' = MPEG Layer 3 (.mp3, .mpeg, .mpa)<br />
data_formats: '.mp3' <br />
'mp4f' = MPEG-4 Audio (.mp4)<br />
data_formats: 'aac ' 'aace' 'aacf' 'aacg' 'aach' 'aacl' <br />
'aacp' 'ac-3' 'ec-3' <br />
'NeXT' = NeXT/Sun (.snd, .au)<br />
data_formats: I8 BEI16 BEI24 BEI32 BEF32 BEF64 'ulaw' <br />
'Sd2f' = Sound Designer II (.sd2)<br />
data_formats: I8 BEI16 BEI24 BEI32 <br />
'WAVE' = WAVE (.wav)<br />
data_formats: UI8 LEI16 LEI24 LEI32 LEF32 LEF64 'ulaw' <br />
'alaw' <br />
'RF64' = WAVE (.wav)<br />
data_formats: UI8 LEI16 LEI24 LEI32 LEF32 LEF64 'ulaw' <br />
'alaw<br />
<br />
For example, this converts the .mp3 file into a .wav file using the Little Endian, 16 bit integer data format:<br />
<br />
<syntaxhighlight lang="bash"><br />
afconvert -f RF64 -d LEI16 '/Applications/iPhoto.app/Contents/Resources/Music/Minuet in G.mp3' test.wav<br />
</syntaxhighlight><br />
<br />
== See also ==<br />
<br />
* [[macOS Audio Player]]<br />
* [[macOS Play Alert Sound|System Sound Services]]<br />
<br />
<br />
[[Category:macOS]]<br />
[[Category:Multimedia]]</div>
Trev