give an example of sawtooth function
Answers
Step-by-step explanation:
The sawtooth wave (or saw wave) is a kind of non-sinusoidal waveform. It is so named based on its resemblance to the teeth of a plain-toothed saw with a zero rake angle.
The convention is that a sawtooth wave ramps upward and then sharply drops[citation needed]. However, in a reverse (or inverse) sawtooth wave, the wave ramps downward and then sharply rises. It can also be considered the extreme case of an asymmetric triangle wave.[1]
The piecewise linear function
{\displaystyle x(t)=t-\underbrace {\lfloor t\rfloor } _{\operatorname {floor} (t)}} {\displaystyle x(t)=t-\underbrace {\lfloor t\rfloor } _{\operatorname {floor} (t)}}
or
{\displaystyle x(t)=t{\pmod {1}}} {\displaystyle x(t)=t{\pmod {1}}}
based on the floor function of time t is an example of a sawtooth wave with period 1.
A more general form, in the range −1 to 1, and with period a, is
{\displaystyle 2\left({\frac {t}{a}}-\left\lfloor {\frac {1}{2}}+{\frac {t}{a}}\right\rfloor \right)} {\displaystyle 2\left({\frac {t}{a}}-\left\lfloor {\frac {1}{2}}+{\frac {t}{a}}\right\rfloor \right)}
This sawtooth function has the same phase as the sine function.
Another function in trigonometric terms with period p and amplitude a:
{\displaystyle y(x)=-{\frac {2a}{\pi }}\arctan \left(\cot \left({\frac {x\pi }{p}}\right)\right)} y(x) = -\frac{2a}{\pi}\arctan \left( \cot \left(\frac{x \pi}{p} \right) \right)
While a square wave is constructed from only odd harmonics, a sawtooth wave's sound is harsh and clear and its spectrum contains both even and odd harmonics of the fundamental frequency. Because it contains all the integer harmonics, it is one of the best waveforms to use for subtractive synthesis of musical sounds, particularly bowed string instruments like violins and cellos, since the slip-stick behavior of the bow drives the strings with a sawtooth-like motion.