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Dual-band PWM audio coding for ultrasound artefact ...
https://ieeexplore.ieee.org/document/8081525/#:~:text=Dual-band%20PWM%20audio%20coding%20for%20ultrasound%20artefact%20reduction,cancellation%20of%20the%20carrier%20frequency%20harmonics%20is%20achieved.
Dual PWM Circuits - Open Music Labs
http://www.openmusiclabs.com/learning/digital/pwm-dac/dual-pwm-circuits/index.html
Dual and Triple PWM schematics with R and C value equations. n is the number of bits per stage, and Fc is the cut-off frequency of the low-pass filter. The theory behind these circuits is pretty simple: Multiple PWM outputs can create multiple audio signals. All we are doing is adding up these signals to get higher resolution.
16-bit Audio PWM by Dual 8-bit PWM with Auto …
https://www.deeptronic.com/electronic-circuit-design/high-precision-16-bit-audio-output-using-cascaded-8-bit-pwm-with-auto-calibration/
Dual 8-bit Module for Producing 16-bit Audio PWM To improve the PWM frequency and the resolution with the limited hardware, we can use two PWM modules. You can use two 8-bit resolution PWM generators in parallel configuration. In order to work, you need to sent the most significant byte is sent to high byte PWM.
Dual-band PWM audio coding for ultrasound artefact ...
https://ieeexplore.ieee.org/document/8081525/
Dual-band PWM audio coding for ultrasound artefact reduction Abstract: A novel approach to PWM coding is introduced based on generating two complementary PWM streams out of the in-band signal's spectrum. The 2 streams are then recombined in a suitable way, so that out-of-phase cancellation of the carrier frequency harmonics is achieved.
Dual Limiter – Classic PWM Limiter – ART Pro Audio
https://artproaudio.com/product/dual-limiter-classic-pwm-limiter/
The DUAL LIMITER has a unique design that will enhance the sonic textures of your audio system for years to come. Developed in partnership with studio and live-sound engineers, the DUAL LIMITER is very musical. The heart of the Dual Limiter is a unique PWM gain control circuit. Combined with its’ intelligent detector, the result is a Cl ass
PWM DAC - Open Music Labs
http://www.openmusiclabs.com/learning/digital/pwm-dac.1.html
Figure 3 – Simple Single and Dual PWM implementations. This method of PWM mixing can be taken to triple and quad implementations, but the benefits quickly begin to dwindle. If you are interested building one of these circuits, we have done an in-depth analysis of higher order PWMs , showing how to pick values, and listing common pitfalls.
generating audio with 14bit data on dual PWM channels with ...
https://forum.arduino.cc/t/generating-audio-with-14bit-data-on-dual-pwm-channels-with-7-bits-per-channel/411877
I'd like to use 14-bit phase corrected PWM to generate some audio from stored tables. I understand I can use two PWM channels with some external resistors to add them together to produce a higher bit depth signal. If it were two 8 bit channels to give me 16 bit audio that would be easy since sending the high 8 bits of the int to the High channel and the low 8 …
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