Basketball referee whistle combination: short blast followed by long blast for technical foul
Close-up powerful blast from professional Acme Thunderer referee whistle
Distant referee whistle sound effect from across a football field with atmosphere
Indoor gymnasium referee whistle with characteristic reverb and echo
Hockey referee whistle sequence: two short blasts followed by one long blast
Swimming pool referee whistle - sharp blast with pool acoustic reflections
Professional electronic referee whistle with precise, consistent tone
Single medium-length blast from classic metal referee whistle with slight wind noise
Series of urgent, rapid whistle blasts indicating emergency or serious foul
Quick double blast fox40 referee whistle for volleyball serve indication
Two-tone professional metal referee whistle with crisp attack and natural decay
Long, powerful soccer referee whistle blast with outdoor stadium ambience
Three quick successive referee whistle blasts indicating end of play, with indoor arena acoustics
Sharp, authoritative single blast referee whistle with slight echo, typical for basketball foul calls