参数值不正确（类型正确）。 在JES（Python / Jython）中

Question

Hey so I am just working on some coding homework for my Python class using JES. Our assignment is to take a sound, add some white noise to the background and to add an echo as well. There is a bit more exacts but I believe I am fine with that. There are four different functions that we are making: a main, an echo equation based on a user defined length of time and amount of echos, a white noise generation function, and a function to merge the noises.

Here is what I have so far, haven't started the merging or the main yet.

#put the following line at the top of your file. This will let
#you access the random module functions
import random

#White noise Generation functiton, requires a sound to match sound length
def whiteNoiseGenerator(baseSound) :
 noise = makeEmptySound(getLength(baseSound))
 index = 0  
 for index in range(0, getLength(baseSound)) :
  sample = random.randint(-500, 500)
  setSampleValueAt(noise, index, sample)
 return noise


def multipleEchoesGenerator(sound, delay, number) :
  endSound = getLength(sound)
  newEndSound = endSound +(delay * number)

  len = 1 + int(newEndSound/getSamplingRate(sound))
  newSound = makeEmptySound(len)

  echoAmplitude = 1.0
  for echoCount in range (1, number) :
    echoAmplitude = echoAmplitude * 0.60
    for posns1 in range (0, endSound):
    posns2 = posns1 + (delay * echoCount)
    values1 = getSampleValueAt(sound, posns1) * echoAmplitude
    values2 = getSampleValueAt(newSound, posns2)
    setSampleValueAt (newSound, posns2, values1 + values2)
return newSound

I receive this error whenever I try to load it in.

The error was:

Inappropriate argument value (of correct type).
An error occurred attempting to pass an argument to a function.
Please check line 38 of C:\Users\insanity180\Desktop\Work\Winter Sophomore\CS 140\homework3\homework_3.py

That line of code is:

setSampleValueAt (newSound, posns2, values1 + values2)

Anyone have an idea what might be happening here? Any assistance would be great since I am hoping to give myself plenty of time to finish coding this assignment. I have gotten a similar error before and it was usually a syntax error however I don't see any such errors here.

The sound is made before I run this program and I defined delay and number as values 1 and 3 respectively.

Answer 1

Check the arguments to setSampleValueAt ; your sample value must be out of bounds (should be within -32768 - 32767 ). You need to do some kind of output clamping for your algorithm.

Another possibility (which indeed was the error , according to further input) is that your echo will be out of the range of the sample - that is, if your sample was 5 seconds long, and echo was 0.5 seconds long; or the posns1 + delay is beyond the length of the sample; the length of the new sound is not calculated correctly.