Random noise and Transients

white noise

a combination of many frequencies

Transients

the frequencies recorded in the first moment when you tap a table or a microphone

what do random noise and frequency both have?

many frequencies and continuous spectrum

linear x axis

each octave has a different horizontal distance

logarithmic x axis

each octave has the same horizontal distance

Random noise

white noise, pink noise, brown noise (random frequencies)

when we talk , there is a pattern of frequencies due to

oral cavity, lips, larynx

fundamental frequency in speech

any sound that we hear has many frequencies, however we mainly precieve the frequency with the highest amplitude

fundamental frequency on a graph

the frequency with the strongest (highest) amplitude we hear the best/most

"the amplitude or magnitude is random" means

every frequency has a different amplitude

what axis is frequency on?

x axis

what axis is amplitude on?

y axis

octave

1st octave is 2 x the frequency, 2nd octave is 2 x the previous frequency, and so on...

what is the loudest intensity amplitude on a graph

0 db

dark areas on spectrogram

frequencies in the sound that have greater energy

what does -12db/octave mean

per one octave we lose 12 db of amplitude