What occurs when two sounds mix together and cause a regular rise and fall in volume. This is most often heard in a band or orcehstra during tuning. An instrument known to be in tune plays the same note as a second similar instrument. If the frequency is the same, the sounds will combine well. If the second instrument is out of tune from the first, a rhythmic beating of the sound will be heard.
A wobbling variation in the loudness of sound caused by interference when two tones of slightly different frequencies are sounded together.
variations in amplitude due to the addition of two waves of different frequencies
the effect produced by interference of waves of slightly different frequency, producing a pattern of alternating intensity.
Periodic fluctuations in peak amplitude which occur when to sinusoids with slightly different frequencies are superimposed
Produced when two or more sound sources are placed beside one another and they interfere with each other to produce a beat. (one complete oscillation of from loud to soft and back to loud.) Or the difference between the two frequencies.
The unwanted sum and/or difference frequencies resulting from the heterodyning (mixing) of two or more signals.
A wobbling effect in a sound which contains two frequencies close together. Heard in bells with doublets.
The combination or difference tone heard when two closely spaced frequencies combine in the ear. It is an intermodulation effect, or distortion.
are produced by two cycles which have similar frequencies (or periods). For example if two adjacent notes are played on the piano they might have frequencies of 220 Hz and 233 Hz and they will produce beats at 13 Hz which is heard as a sort of wa-wa-wa-wa sound. Beats are equivalent to Amplitude and Frequency modulation at the same time so we may either look for multiple cycles of similar period or one with a modulating cycle. These are equivalent.
When two waves of slightly different frequencies interfere with one another, they produce a â€œbeatingâ€ interference pattern that alternates between constructive (in-phase) and destructive (out-of-phase). In the case of sound waves, this sort of interference makes a â€œwa-wa-waâ€ sound, and the frequency of the beats is equal to the difference in the frequencies of the two interfering waves.