Blogmarks.net is a social bookmarking service.

Founded in late 2003 and heartquartered in France, we are non-profit and independant.

We believe in the open web, think internet services should be sustainable, build for the long term.

While we are re-launching the service, we only accept new members through invitation.

PUBLIC MARKS with tag 年纪

19 December 2006 11:00

Ultrasonic Ringtones - The new ringtones that only kids can hear!

by sharing8 (via)

Can I hear these ultrasonic ringtones? Find out just how far your ears can hear into the range of ultrasonic ringtones. Pretty much everyone should be able to hear the lowest tone (8kHz). Many people should be able to hear up to around 14.1kHz, from around 17kHz upwards we get into the range that only the under 20's can hear!

声音年纪频率

1 (1 marks)

PUBLIC TAGS related to tag 年纪

Active users

sharing8
last mark : 19/12/2006 11:03