I have a program that downloads PCM data from a Web Server, which it uses later to play through a standard PCM player. I want to be able to allow users to change the pitch of the PCM data while its being played. Does anyone know how to do this? ...
I have a children's iPhone application that I am writing and I need to be able to shift the pitch of a sound sample using Core Audio. Does anyone have any example code I could look at where this is done. There are many music and game apps in the app store that do this so I know I am not the first one. However, I cannot find any examples ...
Hello, 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 using autocorrelation. Im trying to do pitch detection of a users singing. Problem is, it keeps returning random results. I've got s...
Hello, I'm trying to do real time pitch detection of a users singing, but I'm running into alot of problems. I've tried lots of methods, including FFT (FFT Problem (Returns random results)) and autocorrelation (Autocorrelation pitch detection returns random results with mic input), but I can't seem to get any methods to give a good resu...
Is there a way to do this? Also, I need this to work with pygame, since I want audio in my game. I'm asking this because I didn't see any tone change function in pygame.. Anyone knows? Update: I need to do something like the noise of a car accelerating. I don't really know if it is timbre or tone. ...
For some reason, when a WAV file is played back using the snippet below, it randomly plays back screwy, like a high pitch noise. It doesn't happen all the time, just randomly. It seems to happen more often when it is played back more frequently. The WAV properties are below along with the code snippet I am using. WAV Properties: Bit...
Hi I'm trying to find a way to detect sound frequency being recorded by iPhone's Microphone. I'd like to detect whether the sound frequency is going up or down. ...
i want to write a music software that can play music, can detect pitch of the sound taken from the computer's microphone(with an algorithm that uses sound filters to filter out frequencies), and enables a good user interface. something similar to smartmusic: http://smartmusic.com any suggestions for what might be the most appropriate l...
Can somebody tell me how to change the pitch of a wave file in Android? ...
Hi, 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 note 1 octave higher(12 semitones). If you halve it, to 0.5, it will be an octave lower (12 semitones). So, my original sample is playi...
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 really don't need any other audio effects. I tried using DirectShow but that doesn't seem to offer time stretch capabilities. I was able to...
after browsing the documentation for the sound classes, it seems there is no way to control sound pitch with Actionscript 3.0. there is only the ability to control volume and pan. why is there no pitch property? it's the only sound property missing for the ability to create a full featured sound engine in Actionscript? i hope i'm mis...
I have a .pcm file with a sound that I would like to add different effects to. What I am looking for is a simple way (prefeably a library) that can help me with these effects. My top priority is to change the pitch of the audio. I would like a function that takes a byte array (or float), and changes the pitch of the audio in that arra...
Pitch means "perceived frequency". Nice. But when I make pitch very low in OpenAL, sound plays a lot of times longer. If I make it very high, sound plays very short but with high frequency. For me, logically the consequence of making slower or faster. Or is pitch != speed? ...
I played Rock Band 2 for the first time a little while ago (at Notacon). One thing I enjoyed about it was getting real-time feedback about my singing. I think it'd be neat to have something like that to run alongside my usual music, so that I can sing to random stuff in my music collection and know when I'm hitting the notes. Is there ...
Has anyone implemented the DIRAC2 library from http://www.dspdimension.com/technology-licensing/dirac2-iphone/ for real time pitch correction on the iPhone? The library doesn't appear to support real time processing but perhaps someone has done it? Thx ...
Just started to realize an augmented reality based project, got GPS location, heading, and the two missing variable to manipulate virtual camera is Pitch/Roll. I'm wondering if there is a ready-made formula I can merge into the project. Could spare me a lot of time. Thanks in advance. ...
I undertaking a personal project which involves the development of a system which will automatically generate audio thumbnail clips (about 30 seconds in length) from a full length track. In order to do this I want to look at the energy and pitch of the audio to try and correctly identify its major structural features. Is there any open...
Hi, Has someone been able to make http://www.surina.net/soundtouch/ work for iPhone? Simple Xcode Demo would be helpful. I'd just like to change pitch without tempo change. thanks :) ...
Yesterday I finalised the code for detecting the audio energy of a track displayed over time, which I will eventually use as part of my audio thumbnailing project. However I would also like a method that can detect the pitch of a track displayed over time, so I have 2 options from which to base my research upon. [y, fs, nb] = wavread('...