one for the bass sounds, one for the middle sounds, one for the high sounds, and one for the very high, so that anything coming through this very high one, even whistles, say-and he giggled-"came through" perfectly.
Soinu baxuetarako, erdikoetarako eta altuetarako bozgorailu bana zegoen, eta beste bat oso altuetarako: hartara, adibidez, soinu oso altuetarako bozgorailuaren bitartez, txistuak ere-barre txikia egin zuen-bikain "irteten" ziren.