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audio - Sine wave generation using phase - Stack Overflow
https://stackoverflow.com/questions/36179393/sine-wave-generation-using-phase
@cixelsyd has the correct formula ... here is the code to create a set of samples of a given frequency based on a sample rate. incr_theta := (2.0 * math.Pi * given_freq) / samples_per_second phase := -1.74 // given phase ... typically 0 note its a constant theta := 0.0 for curr_sample := 0; curr_sample < number_of_samples; curr_sample++ { source_buffer[curr_sample] = …
Visualizing Sound as an Audio Spectrogram - Apple …
https://developer.apple.com/documentation/accelerate/visualizing_sound_as_an_audio_spectrogram
The DCT computes the frequency components of an audio signal and represents the audio as a series of amplitudes at the component frequencies. DCTs are related to Fourier transforms, but use real values rather than complex values. You can learn more about Fourier transforms at Finding the Component Frequencies in a Composite Sine Wave.
Apple Developer Documentation
https://developer.apple.com/documentation/avfaudio/audio_engine/building_a_signal_generator
Before you run the sample code project in Xcode: This sample code project requires macOS 10.15. See Also. Rendering. Performing Offline Audio Processing. Add offline audio processing features to your app by enabling offline manual rendering mode. class AVAudio Source Node.
Building a Synthesizer in Swift. Making audio waveforms ...
https://betterprogramming.pub/building-a-synthesizer-in-swift-866cd15b731
If you took trigonometry you’ll know that sine is a periodic function of time with a period equal to (2 * pi) over b, where b is the factor that time or x is being multiplied by before being passed into the function. In our case, b is equal to (2 * pi * Oscillator.frequency). That means the period of our sine wave is (1 / Oscillator.frequency ...
audiotoolbox - Writing a 32-bit Float Wav File Using Audio ...
https://stackoverflow.com/questions/21884311/writing-a-32-bit-float-wav-file-using-audio-file-services
I'm trying to save off some raw PCM values by writing them to a WAV file using Xcode and AudioFileServices, however I am having difficulty writing just a simple sine wave to the file. ... however I am having difficulty writing just a simple sine wave to the file. Here's my code: ... how to convert audio x-wav file to regular wav file. 2.
Signals and Sine Waves (Learn Web Audio from the …
https://teropa.info/blog/2016/08/04/sine-waves.html
A sine wave (often also called a sinusoid) is one of the most basic building blocks of audio signals. They're easy to generate, transform, and combine, which makes them a very useful primitive for all kinds of purposes. To make a sine wave, we first need to talk about angles and the sine function.
GitHub - drshriveer/sinewave: A discrete and continuous ...
https://github.com/drshriveer/sinewave
sinewave. A discrete and continuous audio sine wave generation library for Java. This library was original written as part of PitchLab in 2009; a continuation of research into human pitch perception, written by ME!The project migrated an application written in the early 1990s to cross platform and modern Java.
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