Almost the same frequency and are sounded together.
20Hz and 270Hz
6Hz
Number of beats heard in one second will be got by the difference between the parent frequencies. Hope you have given wrong data for parent frequencies. The first one has to be 220 Hz and the other is 226 Hz. Hence 6 beats will be heard in one second. If you say 20 is the right one then difference will be 206. If 206 beats get produced in one second it will not be named as beat at all. Moreover our hearing could not recognize this as beating at all. So better correct the given data.
3 tuning forks in a circle is Yamaha.
3.0 HZ
20Hz and 270Hz
11.3 beats
6Hz
Number of beats heard in one second will be got by the difference between the parent frequencies. Hope you have given wrong data for parent frequencies. The first one has to be 220 Hz and the other is 226 Hz. Hence 6 beats will be heard in one second. If you say 20 is the right one then difference will be 206. If 206 beats get produced in one second it will not be named as beat at all. Moreover our hearing could not recognize this as beating at all. So better correct the given data.
3 tuning forks in a circle is Yamaha.
A sound known as a "beat frequency" will be heard when two sounds of almost (but not quite) the same frequency are mixed together. This is commonly heard when tuning a stringed instrument (such as a guitar) into itself, or when tuning to a standard pitch generator. If the string is vibrating at exactly the same frequency as the standard, then no beat frequency is heard. If the string is vibrating at a just slightly different frequency from the standard, then the interference between the two sounds is heard as a regular "beat". The frequency of the beat is exactly equal to the difference between the two frequencies i.e. if the standard is 440 Hz and the string is vibrating at 441 Hz, then a beat frequency of 1 Hz will be heard.
3.0 HZ
Beats in sound occur when two sound waves of slightly different frequencies interfere with each other, creating a pulsating effect of loud and soft sounds. This is because the waves temporarily reinforce and cancel each other out as they overlap in space. Beats are commonly heard when tuning musical instruments or from the interference between two close frequencies.
Two babies! Twins!!!
It can, if there's another source of sound nearby, vibrating at the natural frequency of the tuning fork. Example: Two tuning forks with the same natural frequency. The first one can be set vibrating by whacking it against the edge of the table, whereupon the second one will vibrate because it resonates with the first one.
A sound known as a "beat frequency" will be heard when two sounds of almost (but not quite) the same frequency are mixed together. This is commonly heard when tuning a stringed instrument (such as a guitar) into itself, or when tuning to a standard pitch generator. If the string is vibrating at exactly the same frequency as the standard, then no beat frequency is heard. If the string is vibrating at a just slightly different frequency from the standard, then the interference between the two sounds is heard as a regular "beat". The frequency of the beat is exactly equal to the difference between the two frequencies i.e. if the standard is 440 Hz and the string is vibrating at 441 Hz, then a beat frequency of 1 Hz will be heard.
By tuning musical instrument we mean that to produce a note of Desired frequency. Take a standard musical instrument of well defined frequency. The new musical instrument and the standard instrument are sounded together. Initially we will hear mixed sound due to slightly frequency difference between them. The frequency of the musical instrument is gradually adjusted till we will hear same sound. When this happens, the musical instrument Will produce the note of desired frequency and is said to be turned. In this way, beats become useful in tuning a musical instrument.