Of course, this is for the applescript, programmers at system level of course can use any 32bit floating number between 0.0 and 1.0. So, in the future (when the possibility to set the volume level with decimal values will be removed) will be possible only 101 exact volume levels - as integers between 0 and 100 (inclusive). What prints something like: output volume:10, input volume:92, alert volume:100, output muted:false is possible to show the current volume by applescript to, e.g.:.The VALUE is an integer between 0(mute) and 100(max volume), what is converted to 100 linear system-level volume-value as: 0(mute), 0.01, 0.02.Osascript -e 'set volume output volume VALUE'

the prefered applescrip method for setting the volume now is:.( click here for the reference - search for set volume) The importat thing is than the 0-7 decimal values are deprecated now, and can disappear in future OS X releases.Apple script currently converting the entered applescipt decimal value (now between 0 and 7) to system-level value between 0 and 1.each physical device has different audio properties, whats mean volume 0.5 for internal apple speaker will produce different 'decibels' as for example 'usb' attached speaker.The precision is as for 32 bit floating point.

internal apple speaker, or USB attached speaker) is possible define 0.000001 or 0.999999 or like.

the system using an floating point value between 0 and 1.

(because this is not a programmer refenece skipping the differences between 'Audio Hardware Services' and 'Audio Hardware Abstraction Layer') volume control, are (roughly) managed 'at system level'. I'm surprised with the comments, about the fractional size precison. So, when you want the volume level to be 50%, use this: $ osascript -e 'set Volume 3.5' # for 50% volumeĪnd (of course) you can use $ osascript -e 'set Volume 0.1' # for a really LOW volume… )

Just checked on my Mountain-Lion-running MacBook: the maximum is 7, not 10 as it was in Leopard. $ osascript -e 'set Volume 7' # for maximum volume You can use the command line to set exact levels: $ osascript -e 'set Volume 0' # for mute

How to lower volume on mac