Recently I saw a video lecture in my CS 101 class that inspired me to start playing with the WAV File Format in C. My project today has been creating sounds using a simple mathematical sine functio...

I am attempting to extract a fundamental frequency from a sound source. maybe someone is singing A3 into the microphone, so I want to be detecting ~ 110Hz my approach is: FFT 1024 floats use the...

i alway had this question in my mind, but wherever i asked, i could never get an answer or a suggestion that would be helpful: How can i pitch a sound (not realtime) ? Im using AVFoundation frame...

Hello kind people of the audio computing world, I have an array of samples that respresent a recording. Let us say that it is 5 seconds at 44100Hz. How would I play this back at an increased pitch...

I'm trying to make a winform app in C# (VS2008) that can load an mp3 (other formats would be nice, but mp3 at a minimum) and be able to adjust the playback speed (tempo) without affecting pitch. I ...

Ive been experimenting with the FFT algorithm. I use NAudio along with a working code of the FFT algorithm from the internet. Based on my observations of the performance, the resulting pitch is ina...

I want to plot the pitch of a sound into a graph. Currently I can plot the amplitude. The graph below is created by the data returned by getUnscaledAmplitude(): AudioInputStream audioInputStrea...

I have recently spotted that it is possible in iOS to use OpenAL to pitch shift. I am looking at Hollance's sound bank player. it takes in 15 or so piano notes spattered through the range, and pla...

I have an OpenAl sound engine on my iPhone app. When I play a sound that I have loaded, I can control it's pitch. In OpenAl a pitch set to 1.0 has no effect. If you double it to 2.0, it plays the ...

Sorry to ask a similar question to the one i asked before (FFT Problem (Returns random results)), but i've looked up pitch detection and autocorrelation and have found some code for pitch detection...