G
Guest
Guest
After weeks of reading all the books I have - I am still struggling with the basic theory of sound to voltage
Can somebody point me int he right direction - I am amost there ..
Part 1
In the standard sine wave graph
The Y axis is amplitude - I take this to be volume or loudness
The X axis is Cycles or Hz
One sine wave goes up and down once - this is 1 cycle and 1 hz
(am i right so far?)
Part 2
If a cycle is very fast then the note is higher..
e.g. 15,000 cycles (15khz) is screeching and 20 cycles (20hz) is bowel wrenching
Problem
How does Parts 1 and 2 relate to each other .... over time?
I am assuming that the 0 level of the Y axis of the Hz graph is common to all frequencies..
So a sine wave with a very short cycle (high note) takes up a very very small portion of the x axis, whereas a sine wave with a very long cycle takes up a very large portion of the x axis.
If the high note was louder than the low note the amplitude of the high note in the cycle would stretch up the Y axis...
By writing this I think I have just answered my riddle so I will continue...
Can somebody confirm?
So for the same time period...
If I play two notes one high and then one low each of equal duration..
I may have 30 different cycles for the high note and then a space and then 3 different cycles for the low note for the same time period...
Can somebody point me int he right direction - I am amost there ..
Part 1
In the standard sine wave graph
The Y axis is amplitude - I take this to be volume or loudness
The X axis is Cycles or Hz
One sine wave goes up and down once - this is 1 cycle and 1 hz
(am i right so far?)
Part 2
If a cycle is very fast then the note is higher..
e.g. 15,000 cycles (15khz) is screeching and 20 cycles (20hz) is bowel wrenching
Problem
How does Parts 1 and 2 relate to each other .... over time?
I am assuming that the 0 level of the Y axis of the Hz graph is common to all frequencies..
So a sine wave with a very short cycle (high note) takes up a very very small portion of the x axis, whereas a sine wave with a very long cycle takes up a very large portion of the x axis.
If the high note was louder than the low note the amplitude of the high note in the cycle would stretch up the Y axis...
By writing this I think I have just answered my riddle so I will continue...
Can somebody confirm?
So for the same time period...
If I play two notes one high and then one low each of equal duration..
I may have 30 different cycles for the high note and then a space and then 3 different cycles for the low note for the same time period...