Audio Test - Sine Sweep 20 to 20000 Hz (Max/Msp) v1

This is a double test. It is for you hearing but first it is for your sound system. If you are going to use headphones, be very careful about adjusting the volume.
Hearing range describes the range of frequencies that can be heard by humans or other animals. The human range is commonly given as 20 to 20.000 Hz, though there is considerable variation between individuals, especially at high frequencies, and a gradual loss of sensitivity to higher frequencies with age is considered normal.

Because of compression of the video/audio file, the audio frequencies may be slightly altered, especially at the extremities of the band. For a general purpose it is ok. Make sure to set the best audio-video quality available.
Thank you. I hope this video could help.

Other tests:

[paulladouceur]

One of the better audio room analysis tools for mixing that I have encountered, thank you.

[samp]

Room acoustics 101 -

Sweeps like this are very handy for determining where your room acoustics problems lie. I have severe cancellation issues from 50-80Hz and then a lot of resonance building up between 100-130Hz (it all sounds like one note!), therefore music I make and music I listen to in my home studio is not heard as intended. The room colours the sound the same way the EQ on your stereo does. And it's a pain in the ass.

Simply speaking - if you listen to this sweep through loudspeakers the perceived level should remain consistent throughout all frequencies (in an ideal room in an ideal world). But realistically, there will always be problems with the sound coming from the speakers being shaped by the size of the room that the waves are bouncing around in.

Sound waves reflect off walls and interact with each other as they go through their respective cycles. Every frequency has a physical length (the lower the frequency, the longer the wave...wavelength is found by dividing speed of sound by any frequency value..343m/s divided by 80Hz is 4.2 meters! ) and if this length corresponds or is equally divisible into the physical dimensions of your room it will reflect and cancel out or amplify itself, leading to inaccurate perception of the sound compared to what is actually coming out of the speakers.

Generally speaking, the size of most domestic rooms means that the longer frequency waves will be affected the most. Low end freqs at 300Hz and lower can be amplified or attenuated by large amounts, leading to bad sounding recordings and inhibiting your ability to make correct decisions during sound design and mixing etc.

If you're making music in your bedroom or wherever...be aware of the shortcomings of small domestic rooms that aren't specifically build for music production. Your bass might be too light or overly dominant when played back in another space...and if you're putting music out to an audience, this is definitely not desirable! If you have a condenser microphone you can download the free RoomEQ wizard software to test your room using a sweep and generate some very revealing graphs that show where your problems are, and then you can go about sorting some acoustic treatment (bass traps!) to even out the response of your room.

TL;DR - you can go out and buy the best speakers in the world but if you don't invest some cash in acoustic treatment as well then you're absolutely wasting your money! Check out Auralex acoustics website for some inspiration, and then go build your own traps :)

[christiansekumade]

The note expression is an octave higher than given. Amazing.

[mallguy]

That is how I'm going to walk outside from now on.

[andrewbloom]

You seem to be using A3=440 not A4, but aside from that it's very good

[mikejakubik]

I can only hear 35Hz to 15000Hz on my speaker setup, how do I know if these are "good" ranges, I mean it could be my hearing or the speakers?

[P.Gillett]

Your test is broken. I can't hear anything under 90 Hz or above 16k Hz.