Difference between revisions of "CSC111 Sound Modification Exercises"
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--[[User:Thiebaut|D. Thiebaut]] ([[User talk:Thiebaut|talk]]) 10:17, 26 February 2014 (EST) | --[[User:Thiebaut|D. Thiebaut]] ([[User talk:Thiebaut|talk]]) 10:17, 26 February 2014 (EST) | ||
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=First we solve it in Pure Python with a List of integers= | =First we solve it in Pure Python with a List of integers= | ||
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Latest revision as of 13:32, 26 February 2014
--D. Thiebaut (talk) 10:17, 26 February 2014 (EST)
First we solve it in Pure Python with a List of integers
# playing with an array of numbers
# to practice using JES for playing with sounds
#
array = [2,3,4,1,10,1,-1,2,1]
print( "len(sound) = ", len( array ) )
#--- different ways to print the array ---
for sample in array:
print( sample, end=" " )
print()
for i in range( len( array ) ):
sample = array[i]
print( sample, end=" " )
print()
for sample in [2,3,4,1,10,1,-1,2,1]:
print( sample, end=" " )
print()
#--- clear array starting at Index 4 ---
startIndex = 4
for i in range( startIndex, len( array ) ):
array[i] = 0
print( "version with cleared end:", array )
#--- reverse array ---
for i in range( 0, len( array )//2 ):
j = len( array )-1 - i
#print( i, j )
temp = array[i]
array[i] = array[j]
array[j] = temp
print( "reversed version = ", array )
#--- get original back with cleared end ---
array = [2, 3, 4, 1, 0, 0, 0, 0, 0]
copyLen = 6 # want to copy sequence of first 4 at end of itself
for i in range( 0, copyLen ):
j = i+copyLen
#print( i, j )
if j < len( array ):
array[j] = array[i]
print( "array with copied sequence: " , array )
#--- echo ---
#--- get original back with cleared end ---
array = [2, 3, 4, 1, 0, 0, 0, 0, 0]
lenSeq = 4
startRepeat = 2
for i in range( lenSeq-1, -1, -1 ):
j = i+startRepeat
print( i, j )
valueRight = array[j]
valueLeft = array[i]
array[j] = valueRight + valueLeft/2
print( "echoed array = ", array )
Then we apply the Algorithm to JES
file = pickAFile()
sound = makeSound( file )
blockingPlay( sound )
startClear = 10561
noSamples = getLength( sound )
for i in range( startClear, noSamples ):
setSampleValueAt( sound, i, 0 )
blockingPlay( sound )
lenSeq = 10502
startRepeat = 4071
for i in range( lenSeq-1, -1, -1 ):
j = i + startRepeat
valueRight = getSampleValueAt( sound, j )
valueLeft = getSampleValueAt( sound, i )
setSampleValueAt( sound, j, valueRight + valueLeft/3 )
blockingPlay( sound )