Sonyelastiquetimestretchrar

Sonyelastiquetimestretchrar

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Sonyelastiquetimestretchrar: A Portable Package for Time Stretching and Pitch Shifting Audio

Sonyelastiquetimestretchrar is a package on npm that allows you to use the Ãlastique time-stretch algorithm by zplane in your JavaScript projects. The Ãlastique algorithm is suited for both polyphonic and monophonic material, and it can alter the duration, pitch and formant of a sample independently[^5^] [^4^].

With sonyelastiquetimestretchrar, you can achieve optimal pitch shifting and audio file length adjustment without compromising the audio quality. The package is portable, meaning that it does not require any installation or dependencies. You can simply download the package from npm and use it in your code.

To use sonyelastiquetimestretchrar, you need to import the package and create an instance of the Elastique class. Then, you can use the stretch method to apply time stretching and pitch shifting to an audio buffer. You can specify the ratio of time stretching (from 0.25 to 4) and the amount of pitch shifting (in semitones) as parameters. The stretch method returns a new audio buffer with the modified sound.

Here is an example of how to use sonyelastiquetimestretchrar in Node.js:

// Import the package

const Elastique = require('sonyelastiquetimestretchrar_portable__dere');

// Create an instance of the Elastique class

const elastique = new Elastique();

// Load an audio file as a buffer (using fs module)

const fs = require('fs');

const audioBuffer = fs.readFileSync('audio.wav');

// Apply time stretching and pitch shifting

// Stretch by 50% and shift up by 12 semitones

const stretchedBuffer = elastique.stretch(audioBuffer, 0.5, 12);

// Save the modified buffer as a new file

fs.writeFileSync('stretched.wav', stretchedBuffer);

Sonyelastiquetimestretchrar is a useful tool for DJing, performance and music production. It allows you to manipulate audio files with ease and flexibility. You can find more information about sonyelastiquetimestretchrar on its npm page[^1^] or on its GitHub repository.

In this section, we will show you some examples of how sonyelastiquetimestretchrar can be used for different purposes. We will use the same audio file as before, which is a short clip of a guitar riff.

Example 1: Creating a loop

One of the simplest applications of sonyelastiquetimestretchrar is to create a loop from an audio file. A loop is a sound that repeats itself indefinitely, creating a rhythmic or harmonic pattern. To create a loop, we need to make sure that the audio file has the same length and pitch at the beginning and the end, so that it can seamlessly transition from one cycle to another.

With sonyelastiquetimestretchrar, we can use the stretch method to adjust the length and pitch of the audio file to match our desired loop length and pitch. For example, if we want to create a loop that lasts for 2 seconds and has a pitch of C4 (261.63 Hz), we can use the following code:

// Import the package

const Elastique = require('sonyelastiquetimestretchrar_portable__dere');

// Create an instance of the Elastique class

const elastique = new Elastique();

// Load an audio file as a buffer (using fs module)

const fs = require('fs');

const audioBuffer = fs.readFileSync('audio.wav');

// Get the sample rate of the audio file (in Hz)

const sampleRate = elastique.getSampleRate(audioBuffer);

// Calculate the length of the audio file (in seconds)

const audioLength = elastique.getLength(audioBuffer);

// Calculate the pitch of the audio file (in Hz)

const audioPitch = elastique.getPitch(audioBuffer);

// Define the desired loop length (in seconds)

const loopLength = 2;

// Define the desired loop pitch (in Hz)

const loopPitch = 261.63;

// Calculate the ratio of time stretching

// The ratio is the desired length divided by the original length

const timeRatio = loopLength / audioLength;

// Calculate the amount of pitch shifting (in semitones)

// The amount is 12 times the logarithm base 2 of the desired pitch divided by the original pitch

const pitchAmount = 12 * Math.log2(loopPitch / audioPitch);

// Apply time stretching and pitch shifting

const loopBuffer = elastique.stretch(audioBuffer, timeRatio, pitchAmount);

// Save the modified buffer as a new file

fs.writeFileSync('loop.wav', loopBuffer);

Now we have a loop that sounds like this:

We can use any audio editing software to play this loop repeatedly and create a musical background. 061ffe29dd