# Block-level set sched ahead time for the current thread

``

    with_sched_ahead_time  time (number)

Specify how many seconds ahead of time the synths should be triggered for the block. See `use_sched_ahead_time` for further information.

See `set_sched_ahead_time!` for a global version of this function. Note, `with_sched_ahead_time` will override any value set with `set_sched_ahead_time!` for the given block within the current thread.

See `with_real_time` for a simple way of setting the schedule ahead time to 0.

Introduced in v3.0

## Example

# Example 1
``
    with_sched_ahead_time 1 do
      play 70
    end

    play 70
| ``
    # Sound will happen with a latency of 1

    # Sound will happen with the default latency (0.5s)