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synthesis, and waveform synthesis; Mozzi sound synthesis library ..

Arduino and Sound Synthesis - [ SPACE ]

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Based on what I read, I've made an algorithm for FM sound synthesis

To play the drum sounds, an AD7303 DAC was used. The samples from each of the sounds is sent to channel A of the 8 bit DAC at 22kHZ using an SPI interface. The output of the DAC is connected directly to the speaker. Pin B.4 is connected to the clock sync pin on the AD7303, pin B.5 is connected to the MOSI input of the DAC and pin B.7 is connected to the SCLK input of the DAC.

Embedded Audio Without Beeps: Synthesis and Sound …

A modular electronic drum kit that allows recorded samples to be used as drum sounds. We decided to build a modular electronic drum kit because we thought it would be an interesting project to be able to record ourselves and use our own voices or sounds as drum noises.

to explore the world of sound synthesis and for me to get a better ..

Stride programming language for real-time sound synthesis, processing, and interaction design

The idea of this project came from some apps on the smart phone. It is very cool and popular to play a virtual instrument on the mobile phone, such as a guitar or a piano. People can take them everywhere and play on it whenever they want. With some knowledge about sound synthesis acquired in the class, we decided to build the electronic multifunction instrument in our project. Meanwhile, this project will also provide ECE4760 course a library for initializing LCD touch screens for reference. It also gives us experience in utilizing a set of devices which is popular in modern devices.

The electronic dhol synthesizes three different sounds: tilli (where we tap the treble drum head with a stick), dhagga (where we tap the bass drum head with a stick), and stick (where we tap the body of the dhol with a stick) Each of the synthesized sounds followed the following sequence:

Real-time Cmix , a MUSIC-N synthesis language somewhat similar …

Free Ebook PDF Computer Sound Synthesis ..

To record the samples, we use an interrupt triggered at 22kHz. The same routine is also used to generate sound output because both of these applications must be triggered at the same rate. If the variable recordFlag is set when the ISR runs, we save samples coming in through the mic’s ADC input to a sample array. We also make sure not to start actually saving the sample until a reasonable amount of sound is being picked up by the mic. To let the user know that mic input is expected, we turn on a red LED when recordFlag is set. Due to speed limitations of the MCU’s ADC, we sampled at one third the interrupt frequency and only set every third byte of the recorded sample array whenever a value was read from the mic. In order to improve sample quality we performed some basic post-processing. This involved some simple interpolation between sampling points as well as including a ramp-up and ramp-down, roughly 4 milliseconds each, at the beginning and end of the samples. This ramping prevents clicking from occurring when the sample starts or stops playing. Due to hardware constraints we elected to only allow recording of four samples at any one time, one sample per drum. These samples are limited to 3700 bytes, or about 0.17 seconds. The length is limited because the recorded samples are stored in flash memory, which is very small. This allowed us to have a total of 4 samples, which is enough to map a recorded sample to each drum.

To record the samples, we use an interrupt triggered at 22kHz. The same routine is also used to generate sound output because both of these applications must be triggered at the same rate. If the variable recordFlag is set when the ISR runs, we save samples coming in through the mic’s ADC input to a sample array. We also make sure not to start actually saving the sample until a reasonable amount of sound is being picked up by the mic. To let the user know that mic input is expected, we turn on a red LED when recordFlag is set. Due to speed limitations of the MCU’s ADC, we sampled at one third the interrupt frequency and only set every third byte of the recorded sample array whenever a value was read from the mic. In order to improve sample quality we performed some basic post-processing. This involved some simple interpolation between sampling points as well as including a ramp-up and ramp-down, roughly 4 milliseconds each, at the beginning and end of the samples. This ramping prevents clicking from occurring when the sample starts or stops playing. Due to hardware constraints we elected to only allow recording of four samples at any one time, one sample per drum. These samples are limited to 3700 bytes, or about 0.17 seconds. The length is limited because the recorded samples are stored in flash memory, which is very small. This allowed us to have a total of 4 samples, which is enough to map a recorded sample to each drum.

that use a patch-programming model and enable sound synthesis.
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Find this Pin and more on Arduino by zartarus

We use the FM synthesis (frequency modulation synthesis) method to produce the piano sound. By using the Fast PWM function on the microcontroller we can generate a sound with particular frequency, which was already realized in previous labs. However, this method can only get a sine wave that does not match any timbre from an instrument. In order to change the timbre of the sound, we decided to use the FM synthesis method.

The Arduino Synthesizer: 20 Steps (with Pictures)

Execution speed is good. The code responds to the external interrupt very well. There is almost no delay between hitting the dhol and sound being outputted. In terms of recording and playing back a sequence, it works very well. We are even able to have the recording play and be able to play on top of that spontaneously, something we had not anticipated. Accuracy in terms of timing is perfect. Everything is seemingly instantaneous. Accuracy in terms of drum sounds is also very good, given that we are working 8-bit samples at 16KHz, and when typical CD quality sound is 32-bit, 44.1KHz.

The Arduino is able to output sound through a library ..

We use the FM synthesis (frequency modulation synthesis) method to produce the piano sound. By using the Fast PWM function on the microcontroller we can generate a sound with particular frequency, which was already realized in previous labs. However, this method can only get a sine wave that does not match any timbre from an instrument. In order to change the timbre of the sound, we decided to use the FM synthesis method.

the Arduino Synthesizer is a robust tool ..

The FM synthesis is a form of audio synthesis where the timbre of a simple waveform is changed by frequency modulating it with a modulating that is also the audio range, resulting in a more complex waveform and a different sounding tone. It is developed by John Chowning at Stanford University in 1967-68. Bessel functions represented the mathematical principle of this method. The formula for elementary FM synthesis is given by

Skill Builder: Advanced Arduino Sound Synthesis | Make:

The FM synthesis is a form of audio synthesis where the timbre of a simple waveform is changed by frequency modulating it with a modulating that is also the audio range, resulting in a more complex waveform and a different sounding tone. It is developed by John Chowning at Stanford University in 1967-68. Bessel functions represented the mathematical principle of this method. The formula for elementary FM synthesis is given by

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