<!-- TITLE: Sound --> <!-- SUBTITLE: Vario sound settings --> {.align-center} # Volume Increase or decrease system volume # Silent on ground ON/OFF Select ON to mute the vario until you are in flight, OFF for always active audio. Default value **ON** # Square ON/OFF If OFF the sound is generated by a sine wave, if ON from a square wave The sine wave is more pleasant to the hearing but the sound is less intense especially at low frequencies. Default value **ON** # Sound Mixer Setting the vario tones. Here it is possible to set the rising or falling tone by means of threshold values. Other values correspond to the cadence at the beginning of scale and end scale values. {.align-center} >## Test ON/OFF >Enable disable test tone corresponding to the value of the next parameter {.is-info} >## Test cms/s -- >Value of climb / sink tone test {.is-info} >## Linear increase -- >Set the way in which the beep interval changes. If this is set to **on** the beep interval will change proportional with the change in vertical speed. If set to **off** the beep interval will change more at the lower end followed by a smaller change towards the end of the interval. {.is-info} >## UpThr cm/s -- >Climb value at which the vario starts to sound. Default value **10 cm/s** {.is-info} >## Down Thr cm/s -- >Sink value at which the vario begins to sound, typically this is sink alarm. Default value **250 cm/s** {.is-info} >## Up F0 Hz -- >Tone frequency of climb at the beginning of the scale (corresponds to 0m / s). Default value **500Hz** {.is-info} >## Up F10 Hz -- >Tone frequency of climb at end scale (corresponds to 10m/s). Default value **1000Hz** {.is-info} >## Up I0 ms -- >Tone interval to the start of climb scale. Default value **600ms** {.is-info} >## Up I10 ms -- >Tone interval at the end of climb scale (corresponds to 10m / s). Default value **200ms** {.is-info} >## Down F0 Hz -- >Tone frequency of sink at the beginning of the scale (corresponds to -0.1m/s). Default value **450Hz** {.is-info} >## Down F10 Hz -- >Tone frequency of sink at end scale (corresponds to -10m/s). Default value **150Hz** {.is-info}