I know how to change tempo with atempo, but the audio file becomes distorted a bit, and I can't find a reliable way to change pitch. (say, increase tempo and pitch together 140%) Sox has a speed o...

Let’s say you have an audio variable called audio and it stores a sound. I know how to change the speed for example: audio.playBackRate = 2; But I don't know how to change the pitch. Is th...

For real time pitch detection of a user's singing FFT and autocorrelation don't get a good result. I can't find C / C++ methods. Microphone input data is correct and when using a sine wave results ...

How can I change the Tone frequency. This Example only pitches it by keeping the old tone frequency and only decrease the length of File. For Example, I have a constant 100 Herz tone (as mp3) and I...

I need any python library to change pitch of my wav file without any raw audio data processing. I spent couple hours to find it, but only found some strange raw data processing code snippets ...

My goal is to use Python to play sounds with the following requirements in a computer game context. Take some input WAV file and randomly Vary the pitch to +/- 50% of original. Changing the sampl...

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 am developing an Audio effects application on OSX using Swift, and I'm interested in integrating a pitch-shift effect. I would like in real-time, to change the tone up or down an octave. Current...

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 p...

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), ...

This is my first post. Is it possible to change the speed of a playback during playback? I want to simulate a car engine sound and for this the first step is to change the speed of a looped sample ...

I want to detect not the pitch, but the pitch class of a sung note. So, whether it is C4 or C5 is not important: they must both be detected as C. Imagine the 12 semitones arranged on a clock face...

I'm trying to use Sebastian Madgwick's IMU algorithms to obtain roll, pitch and yaw from my sensor, which is an MPU-9150. The folder I downloaded came with some sample data, and I just replaced thi...

I want to create an audio file using the existing audio file by which I can modify the pitch of the audio for different durations of the file. Like if the file is of 36sec then I want to modify the...

I want to modify the pitch of the audio clip dynamically based on the user input at different time instants, say if user enters change the pitch of the audio after 10 seconds then how can I achieve...

I'm currently trying to do pitch shifting of a wave file using this algorithm https://sites.google.com/site/mikescoderama/pitch-shifting Here my code which use the above implementation, but with ...

I'm looking to extract pitches from a sound signal. Someone on IRC just explained to me how taking a double FFT achieves this. Specifically: take FFT take log of square of absolute value (can b...

My group is developing a simple MATLAB Graphical User Interface (GUI) that is supposed to record audio from a microphone - plugged in or built in to the computer - and play back the signal. So far ...

I want to apply FFT on the real audio device and calculate the peak from it here is my code.. N=8192 kiss_fft_cpx out[N/2 +1]; int len = fft->N / 2 + 1; kiss_fft_scalar* samples = &s...

Has someone been able to make SoundTouch Audio Processing Library work for iPhone? Simple Xcode Demo would be helpful. I'd just like to change pitch without tempo change.

I'm writing an app in which I'm trying to change the pitch of the audio when I'm recording a movie (.m4v). Or by modifying the audio pitch of the movie afterwards. I want the end result to be a mov...

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...

I've been working on a simple frequency detection setup on the iphone. Analyzing in the frequency domain using FFT results has been somewhat unreliable in the presence of harmonics. I was hoping to...

I am creating a pitch detection program that extracts the fundamental frequency from the power spectrum obtained from the FFT of a frame. This is what I have so far: divide input audio sign...

I'm woking on a project for my thesis in computer science. It aims at implementing an application that allows the user to sing or whistle a melody in the pc's or smartphone's microphone and w...