Sine wave frequencies - Can you hear them all?
The range of human hearing goes from 20 Hz all the way to 20,000 Hz. But can you hear all of the low frequencies and all of the high? This video will test your speakers and your hearing. How many frequencies can YOU hear?
Some of my most popular videos are about sine waves so here's a video about sine waves I'm going to play you some sine waves all the way from 20 Hertz up to 20 kilohertz the question is can you hear them all
I'm guessing that you couldn't hear them all so why is this firstly let's listen to some low frequencies
it depends on what speakers you're using but I'm guessing you started to hear something around fifty to sixty Hertz the reason you didn't hear anything at frequencies lower than that is because your speakers can't reproduce those frequencies if you're listening on laptop speakers maybe you didn't hear anything at all but if you're listening on studio-quality headphones perhaps you heard everything lucky you but what about the high frequencies well that depends how old you are high frequency perception decreases with age when you're really young like 10 or under you can probably hear all of the frequencies all the way up to 20 kilohertz and maybe you could hear even higher than that but we normally think of 20 kilohertz as the limit of the audio band as you get into your teens and 20s your high frequency perception gets worse maybe only up to 15 kilohertz or so reach the age of 40 and perhaps you can only hear up to 12 kilohertz by the time you're 60 or so your upper limit could be somewhere around 10 kilohertz so let's listen to those high frequencies again and you can compare what you hear with your age
so if you can't hear all those frequencies don't worry it's normal and if you want reassurance perhaps you can consider consulting an audiologist so let's listen to all of those frequencies again
I'm David Mellor course director of audio master class thank you for listening