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Overview :: PWM Audio Controller :: OpenCores
https://opencores.org/projects/wbpwmaudio
The controller can either be configured for a fixed audio sample frequency, such as 8kHz, 16kHz, or even 44.1 kHz, or it can be configured to have any audio sample frequency that is an integer divisor of your FPGA's clock rate. What makes this PWM controller unique from other controllers is the bitreverse.
A Wishbone Controlled PWM (audio) controller - GitHub
https://github.com/ZipCPU/wbpwmaudio
This PWM controller was designed with audio in mind, although it should be sufficient for many other purposes. Specifically, it creates a pulse-width modulated output, where the amount of time the output is 'high' is determined by the pulse width data given to it. Further, the 'high' time is spread out in bit reversed order.
Intelligent Digital Amplifier PWM Controller and Audio ...
https://www.mouser.com/datasheet/2/465/fn6785-29512.pdf
PWM Controller, these devices offer a complete, powerful, and very cost effective audio solution for high volume and cost-critical products. This 4th generation Digital Audio Engine (DAE-4P)™ device combines extensive integrated Digital Signal Processor (DSP) audio processing with amplifier control, for a complete audio solution.
Fully Digital PWM Controller Streamlines Class-D Audio ...
https://www.electronicdesign.com/technologies/boards/article/21763024/fully-digital-pwm-controller-streamlines-classd-audio-amps
Leveraging digital pulse-width modulation (PWM) technology obtained by acquiring AudioLogic last year, Cirrus Logic has crafted a fully digital PWM controller for audio power amplification....
How to create a PWM controller in VHDL - VHDLwhiz
https://vhdlwhiz.com/pwm-controller/
Examples of use cases that are good candidates for PWM are audio modulation (speakers), light intensity control (lamps or LEDs), and induction motors. The latter includes servo motors, computer fans, pumps, brushless DC motors for electric cars, and the list goes on. See also: RC servo controller using PWM from an FPGA pin How PWM works
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