FrequencyGen

How to use the Frequencygen audio frequency tone generator.

• Set the frequency slider to the desired frequency between 0 and 20,000 Hertz.
• Set the balance slider to control output through the left and right speakers.
• Set the volume slider to the desired volume, keeping in mind that high volumes, especially while wearing earphones can damage your hearing, even if you can not hear the frequency.
• Press the play button to play the tone at the set frequency. Whle playing the value for the frequency, balance and volume can still be adjusted
• Or, press the record button to play and also record the set frequency tone. As with the play button, the frequency, balance and volume can still be adjusted. There is a 10 second limit on the length of the recording
• After recording, a download link will appear below the play and record buttons allowing download of the last recording. The file name will be set to the frequency at which the recording started at. The file type will be what your browser supports audio encoding to, probably .webm or .ogg

What can an audio frequency tone generator be used for?

Testing speakers and audio equipment

The most obvious use for a frequency tone generator is to test speakers. Knowing what frequency a speaker can reproduce is very important when setting crossover points.

To use this frequency tone generator to test any sort of output, you first need to attach the device you are viewing this site on to your audio equipment. How this is done will abvously depend on what device you are viewing the Frequencygen frequency tone generator on and what device you want to send the sound to. In my case, I am usually testing car audio so view the Frequencygen frequency tone generator on my phone and connect it to the headunit 3.5 aux in via the phones 3.5 headphone jack.

Speaker frequency response

Play a test tone at the lower frequency that you want to start testing at, then gradually raise the frequency via the slider of the frequency buttons. While this method is not too accurate as everyones hearing is different, it should give you a general idea.

Speaker balance and phase

You can test speaker balance simply by shifting the balance slider to the left and right.

To test speaker phase, slide the balance from left to right and listening for when there seems to be more output. If there seems to be more output when the balance is centered it means the speakers are correctly wired in phase. If there seems to be more output when the balance is either to the right or left, then the speakers are probably wired out pf phase and you should check your speaker wires.

Setting crossover point / low pass filter

Typically when connecting a subwoofer to an audio system you will set a low pass filter on the subwoofer output/amplifier. When doing this you would not want you other speakers to output at these low frequencies which would be taken care of by the subwoofer. Using an audio tone frequency generator allows you to check at what frequency the non subwoofer speakers start to drop off in output and where to set the low pass filter on your subwoofer.

Converting the recorded file

When selecting the record button, this Audio tone frequency generator will record the audio for up to 10 seconds. A link will then be generated so you can download the recording. The file type will be determined by the browser you are using and the audio formats it supports. Chrome will probably generate a ".webm" file and Firefox an ".ogg" file. You can convert these files to other formats with online audio conversion tools or with the Free software called Audacity