Signals, sounds and call outs

Timing

All time durations in this specification are measured relative to the start of the start-BEEP/ddc-GO in the beginning of the time track and is measured until the start of another sound.

Tones

start-BEEP

Defined as a square wave at 578.3 Hz, this correlates do a D₅ in standard tuning (A = 440 Hz) playing for 0.350 seconds.

switch-BEEP

Defined as a square wave at 493.9 Hz, this correlates to a B₄ in standard tuning (A = 440 Hz) playing for 0.350 seconds.

soft-BEEP

Defined as a sine wave at 578.3 Hz for 0.350 seconds.

ddc-GO

Defined as the spoken word "Go!"

ddc-BUZZ

Defined as a buzzing sound

Start

All speed time tracks except DDC should start as follows:

<Event Name> <Event Time> <1.000 seconds silence> Judges Ready? <0.500 seconds silence> Athletes Ready? <0.500 seconds silence> Set <0.500 seconds silence> <start-BEEP>

Where <Event Time> is defined as [<N> by] <Time> seconds" where [<N> times] is only required if the event is performed in a relay fashion. (For example: "four by thirty seconds" or "one hundred eighty seconds") All time definitions in the event presentation come in seconds.

The <Event Name> is stated as defined in the competition manual.

DDC speed time tracks start as follows:

Double Dutch Contest. Speed. Judges ready? Jumpers ready? On your mark. Get set. <ddc-GO>

For freestyle events, after the athlete has been introduced, their music will begin after a short pause.

Switch

When the defined amount of time has elapsed since the beginning of the previous start-BEEP/switch-BEEP and another athlete’s part of a relay fashion event should commence a switch-BEEP should sound.

Stop

When the defined amount of time has elapsed since the beginning of the previous start-BEEP/switch-BEEP and the event should stop a start-BEEP should sound.

For DDC the ddc-BUZZ should sound instead.

Time call outs

For speed and multiple events where each section of the event is shorter than or equal to 60 seconds in duration there should be time call outs every 10 seconds in the form of <Seconds> where <Seconds> is the number of seconds elapsed since the previous start-BEEP/switch-BEEP.

For DDC speed events the time call outs are made as a count-down rather than a count up. The time call outs should be in the form <Seconds Left> where <Seconds Left> is the number of seconds left until the next ddc-BUZZ. Time call outs should be made 10, 5, 4, 3, 2, and 1 second before the ddc-BUZZ.

For speed and multiple events where each section of the event is longer than 60 seconds in duration there should be time call outs every 60 seconds in the form of <Minutes> minute(s) where <Minutes> is defined as the number of minutes elapsed since the last start-BEEP/switch-BEEP. In addition to this there should be call-outs every 15 seconds in the form of <Seconds> where <Seconds> is the number of seconds elapsed since the previous start-BEEP/switch-BEEP or minute call-out.