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Audio Input and ouput for the propeller — Parallax Forums
https://forums.parallax.com/discussion/109619/audio-input-and-ouput-for-the-propeller
you could store whatever notes you plan to output as 8 bit numbers that correspond to a frequency (note) then you could make a voltage controlled oscillator (VCO) with a mosfet and 2 op amps, then the propeller could output …
Audio | LEARN.PARALLAX.COM
https://learn.parallax.com/support/reference/propeller-blocklyprop-block-reference/audio
Sets up the WAV player object in the Propeller microcontroller; Plays the WAV formatted audio file from the SD card whose filename was typed into the block. *Compatible with FAT32-formatted microSD cards, such as Parallax #32328. The WAV file on the microSD card must be in the correct format. Options from our Sound Library reference section:
Audio Outputs in ProPresenter – Renewed Vision
https://support.renewedvision.com/hc/en-us/articles/360052697694-Audio-Outputs-in-ProPresenter
You can route ProPresenter's audio channels to the channels of your output device here as well. More information on Audio Routing can be found here. If you are outputting your main audio output via either NDI or SDI, you should enable the SDI & NDI option. More information on this output type is available in our article here.
Propeller Platform : 20 Steps - Instructables
https://www.instructables.com/Propeller-Platform/
This lets you do really cool things like output VGA, do speech synthesis, play .wav files, and more, all on the chip. The Propeller does 160 MIPS while an atmega168 does 16. Hi-quality audio and video The hardware for video is builtin and numerous audio libraries are …
Propeller Activity Board WX (#32912)
https://www1.parallax.com/sites/default/files/downloads/32912-Propeller-Activity-Board-WX-Guide-v1.0_1.pdf
14) TRRS Audio/Video Jack The TRRS (tip, ring 1, ring 2, and sleeve) (audio/video) jack A/V provides audio output to 1/8” stereo headphone or speaker plugs. Propeller I/O pins P26 (left channel= tip) and P27 (right channel = ring or ring 1) are hardwired to low-pass filters, amplifiers and coupling capacitors that can drive headphones,
Propeller Activity Board (#32910) Product Guide
https://cdn-shop.adafruit.com/datasheets/32910-Propeller-Activity-Board-Guide-v1.0.pdf
15) Stereo Output Jack The audio output jack fits 1/8” headphone or speaker plugs. Propeller I/O pins P26 (right channel) and P27 (left channel) are hardwired to a low-pass filter, amplifier and coupling capacitor circuits that can drive headphones, ear-buds, speakers with built-in amplifiers, or line level inputs. it is compatible with
DAC - Ray's Logic
http://www.rayslogic.com/propeller/Programming/dac/dac.htm
The external capacitor and resistor basically filter out the high frequency output of the Prop pin, leaving just the DC level. The Demo Board already has the resistor and capacitors for 2 channels of DAC for stereo audio. There are a few programs …
Propeller Activity Board WX (#32912)
https://www1.parallax.com/sites/default/files/downloads/32912-Propeller-Activity-Board-WX-Guide-v2.1.pdf
The Propeller can multiply its 5 MHz oscillator signal by up to 16 for a system clock frequency of 80 MHz. 2) Power Jack. The 2.1 mm center-positive power jack is one of two power input options. The board accepts 6 to 2 4 VDC from this connector, although a …
Propeller Thrust - NASA
https://www.grc.nasa.gov/WWW/k-12/airplane/propth.html
Propeller Propulsion System. On the slide, we show a schematic of a propeller propulsion system at the top and some of the equations that define how a propeller produces thrust at the bottom. The details of propeller propulsion are very complex because the propeller is like a rotating wing. Propellers usually have between 2 and 6 blades.
Propeller Development Board - Gravitech
https://gravitech.us/prdebo.html
The Propeller Development Board, utilizing the multi-processor high performance Propeller P8X32 microcontroller. It offers standard connectors and support for direct ASCII Keypad Connection, Mouse support,TV output, Audio output and much more. It is a high-level controller that is ideal for use in graphical displays, robots and much more.
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